Lake Perris: toxic algae advisories
Lake Perris, Riverside County. See all Riverside County waters.
What the state's records say
Danger advisory, last posted Feb 27, 2023. No all-clear recorded.
2 reported spots here have an advisory with no all-clear recorded.
Reporting is voluntary, so the state may not have recorded an end even if conditions changed. Check posted signs and the official map.
What this level asks: Toxins may be at levels that can seriously harm people and animals. Stay out of the water and keep children and pets away from the water and the shore.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Lake Perris
The state has an advisory on file for Lake Perris (Danger advisory), last posted Feb 27, 2023, and no all-clear recorded. Keep your dog out of the water and away from scum on the shore until the state records an end.
Reported spots
The state records each report at a spot, such as a beach or a boat ramp. Each spot's latest deciding record:
| Spot | Status |
|---|---|
| Moreno Swim Beach | The state's latest record, from Oct 19, 2026, recommends no advisory. |
| Perris Swim Beach | The state's latest record, from Oct 19, 2026, recommends no advisory. |
| Lake Perris, Outlet PE002 (surface) | The state's latest record, from Oct 19, 2026, recommends no advisory. |
| Lake Perris mid lake | Warning advisory, last posted Feb 27, 2023. No all-clear recorded. |
| Near Moreno Beach | Danger advisory, last posted Dec 15, 2022. No all-clear recorded. |
| Moreno Swim Beach | The state's latest record, from Sep 2, 2022, recommends no advisory. |
| Perris Swim Beach | The state's latest record, from Aug 29, 2022, recommends no advisory. |
| Outlet | The state's latest record, from Jun 20, 2022, recommends no advisory. |
| Perris Swim Beach | The state's latest record, from Jul 12, 2021, recommends no advisory. |
| outlet | The state's latest record, from Jul 12, 2021, recommends no advisory. |
| Moreno Swim Beach | The state's latest record, from Jul 12, 2021, recommends no advisory. |
| Lake Perris, outlet | The state's latest record, from Oct 30, 2020, recommends no advisory. |
| Lake Perris, Perris Swim Beach | The state's latest record, from Sep 3, 2020, recommends no advisory. |
| Lake Perris, Moreno Swim Beach | The state's latest record, from Sep 3, 2020, recommends no advisory. |
| Lake Perris, Moreno Swim Beach | The state's latest record, from May 24, 2019, recommends no advisory. |
Advisory history
Every advisory record the state has published for Lake Perris, newest first. "None" is the state's record that no advisory was recommended on that date. "NA" records do not change a status.
| Date | Spot | State's level | Notes |
|---|---|---|---|
| Oct 19, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 19, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 19, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Sep 22, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 22, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 17, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 17, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 8, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 8, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 8, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 24, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 24, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 24, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 10, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 10, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 10, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 28, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 28, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 28, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 20, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 20, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 20, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 15, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 15, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 15, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 8, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 8, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 8, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 1, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 1, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 1, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 25, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 25, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 25, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 12, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 12, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 12, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 9, 2026 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 9, 2026 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 9, 2026 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 14, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Sep 30, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 16, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 3, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 3, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 3, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 25, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 25, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 25, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 20, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 20, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 20, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 14, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 14, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 14, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 1, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 1, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 1, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 25, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 25, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 24, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 24, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 24, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 21, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 21, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 21, 2025 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 21, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 9, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 9, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 9, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 1, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 1, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 1, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 26, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 26, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 26, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 17, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 17, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 17, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 10, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 10, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 2, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 2, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 2, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 2, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| May 27, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 27, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 27, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| May 20, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 20, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 20, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| May 14, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 14, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 14, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| May 6, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 6, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 6, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 28, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 28, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 28, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Apr 28, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Apr 28, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 18, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Apr 18, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Apr 18, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 15, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Apr 15, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Apr 15, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Apr 2, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Apr 2, 2025 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Apr 2, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Mar 26, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Mar 26, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 26, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 26, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Mar 26, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 18, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Mar 18, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 18, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Mar 18, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Mar 7, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Mar 7, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Mar 7, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 5, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 5, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Mar 5, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Feb 18, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Feb 18, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Feb 18, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Feb 14, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Feb 14, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Feb 14, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Feb 3, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Feb 3, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Feb 3, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jan 28, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jan 28, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jan 28, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jan 28, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jan 24, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jan 24, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jan 24, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jan 24, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jan 13, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jan 13, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jan 13, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jan 7, 2025 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jan 7, 2025 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jan 7, 2025 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Dec 20, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Dec 20, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Dec 20, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Dec 17, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Dec 17, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Dec 17, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Dec 9, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Dec 9, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Dec 9, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Dec 9, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Dec 9, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Dec 9, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Dec 9, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Nov 25, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Nov 25, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Nov 25, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Nov 15, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Nov 15, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Nov 15, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Nov 8, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Nov 8, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Nov 8, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 30, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 30, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 30, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Oct 30, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 23, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 23, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 23, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Oct 10, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 10, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 10, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Oct 10, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Oct 1, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Sep 17, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Sep 6, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Sep 6, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 6, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Sep 6, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 6, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 28, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 28, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 28, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 19, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 19, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 19, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 13, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 13, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 13, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 6, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Aug 6, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 6, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 30, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 30, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 30, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 23, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 23, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 22, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jul 15, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 15, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 5, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 5, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 5, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 28, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 28, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 21, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 21, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 14, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jun 14, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 3, 2024 | Lake Perris, Outlet PE002 (surface) | None | Updates from routine monitoring program-organization |
| Jun 3, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 3, 2024 | Perris Swim Beach | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 24, 2024 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 24, 2024 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 17, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Oct 3, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 15, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 15, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 5, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 5, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 5, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Sep 5, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 16, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 16, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 16, 2023 | Moreno Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 16, 2023 | Perris Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 8, 2023 | Perris Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 8, 2023 | Moreno Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 28, 2023 | Moreno Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 28, 2023 | Perris Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 19, 2023 | Perris Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 19, 2023 | Moreno Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 10, 2023 | Moreno Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 10, 2023 | Perris Swim Beach | None | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 6, 2023 | Perris Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 6, 2023 | Moreno Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 30, 2023 | Moreno Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 30, 2023 | Perris Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 23, 2023 | Perris Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 23, 2023 | Moreno Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 23, 2023 | Perris Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 15, 2023 | Perris Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 15, 2023 | Moreno Swim Beach | Caution | Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 15, 2023 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Jun 15, 2023 | Perris Swim Beach | Caution | Updates from routine monitoring program-organization |
| May 30, 2023 | Perris Swim Beach | Warning | Updates from routine monitoring program-organization |
| May 30, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| May 30, 2023 | Perris Swim Beach | Warning | Updates from routine monitoring program-organization |
| May 30, 2023 | Moreno Swim Beach | Warning | Updates from routine monitoring program-organization |
| May 15, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 15, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| May 10, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| May 4, 2023 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| May 4, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Apr 25, 2023 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Apr 25, 2023 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Apr 25, 2023 | Perris Swim Beach | Caution | Updates from routine monitoring program-organization |
| Apr 21, 2023 | Perris Swim Beach | Warning | Updates from routine monitoring program-organization |
| Apr 21, 2023 | Moreno Swim Beach | Warning | Updates from routine monitoring program-organization |
| Apr 12, 2023 | Moreno Swim Beach | Warning | Updates from routine monitoring program-organization |
| Apr 12, 2023 | Perris Swim Beach | Warning | Updates from routine monitoring program-organization |
| Apr 12, 2023 | Perris Swim Beach | Caution | Updates from routine monitoring program-organization |
| Apr 12, 2023 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Mar 28, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 28, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 22, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 22, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 17, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 17, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 10, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 10, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 10, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Mar 10, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Feb 27, 2023 | Lake Perris mid lake | Warning | Updates from routine monitoring program-organization |
| Feb 27, 2023 | Moreno Swim Beach | Warning | Updates from routine monitoring program-organization |
| Feb 27, 2023 | Perris Swim Beach | Warning | Updates from routine monitoring program-organization |
| Feb 23, 2023 | Moreno Swim Beach | Warning | Updates from routine monitoring program-organization |
| Feb 23, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Feb 23, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Feb 23, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Feb 7, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Feb 7, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 27, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 27, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 26, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 18, 2023 | Moreno Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 17, 2023 | Lake Perris mid lake | Danger | Updates from routine monitoring program-organization |
| Jan 17, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 17, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Jan 17, 2023 | Lake Perris mid lake | Danger | Updates from routine monitoring program-organization |
| Jan 17, 2023 | Perris Swim Beach | Danger | Updates from routine monitoring program-organization |
| Dec 15, 2022 | Near Moreno Beach | Danger | Alert-high concentration toxins; Floating/planktonic bloom observed; visual monitoring based advisory |
| Dec 9, 2022 | Near Moreno Beach | Caution | Floating/planktonic bloom observed; visual monitoring based advisory |
| Sep 2, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 29, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 22, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 22, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 15, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 15, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 11, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 11, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 3, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Aug 3, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 27, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 27, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 21, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 21, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 8, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 8, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 20, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 20, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 20, 2022 | Outlet | None | Updates from routine monitoring program-organization |
| Jun 20, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jun 20, 2022 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Jun 16, 2022 | Perris Swim Beach | Caution | Updates from routine monitoring program-organization |
| Jun 16, 2022 | Outlet | Caution | Updates from routine monitoring program-organization |
| Jun 16, 2022 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| Jun 3, 2022 | Perris Swim Beach | Caution | Updates from routine monitoring program-organization |
| Jun 3, 2022 | Outlet | Caution | Updates from routine monitoring program-organization |
| Jun 3, 2022 | Moreno Swim Beach | Caution | Updates from routine monitoring program-organization |
| May 16, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| May 16, 2022 | Outlet | None | Updates from routine monitoring program-organization |
| May 16, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 4, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| May 4, 2022 | Outlet | None | Updates from routine monitoring program-organization |
| May 4, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 8, 2022 | Outlet | None | Updates from routine monitoring program-organization |
| Mar 8, 2022 | Perris Swim Beach | None | Updates from routine monitoring program-organization |
| Mar 8, 2022 | Moreno Swim Beach | None | Updates from routine monitoring program-organization |
| Jul 12, 2021 | Perris Swim Beach | None | Testing results below posting triggers |
| Jul 12, 2021 | outlet | None | Testing results below posting triggers |
| Jul 12, 2021 | Moreno Swim Beach | None | Testing results below posting triggers |
| Oct 30, 2020 | Lake Perris, outlet | None | |
| Sep 3, 2020 | Lake Perris, Perris Swim Beach | None | |
| Sep 3, 2020 | Lake Perris, Moreno Swim Beach | None | |
| May 24, 2019 | Lake Perris, Moreno Swim Beach | None |
Source
Advisory data: California State Water Resources Control Board, Freshwater Harmful Algal Bloom Program, via data.ca.gov (public domain). Advisories are recommendations; reporting is voluntary and incomplete. The state's data. An advisory ends only when the state records a later "None" (no advisory recommended) at the same spot, or an end date. A blank end date is unknown.