Round Valley Hidden Oaks Casino and Restaurant
California - Non-Transient Non-Community - PWSID: 090605177
System Information
| PWSID | 090605177 |
| System Name | Round Valley Hidden Oaks Casino and Restaurant |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 3, 2007 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | Covelo |
| ZIP Code | 95428 |
| Address | 77826 Covelo Road |
| Organization | Round Valley Tribal Council |
| Phone | 7079836126 |
Population & Service
| Population Served | 137 |
| Service Connections | 7 |
Drinking Water Violations (111)
This water system has 111 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 30, 2025 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Dec 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jan 17, 2024 | - | |
| Nov 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jan 17, 2024 | - | |
| Oct 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Nov 16, 2023 | - | |
| Aug 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jul 18, 2023 | - | |
| Jun 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jun 5, 2023 | - | |
| Apr 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jun 5, 2023 | - | |
| Feb 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Mar 22, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.7 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.00005 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.001 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.04 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.5 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.007 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.02 mg/L | - | Archived | Dec 31, 2025 | - | |
| Dec 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Jan 19, 2023 | - | |
| Nov 1, 2022 | Nov 30, 2022 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2022 | - | |
| Nov 1, 2022 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2022 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Oct 31, 2022 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2022 | - | |
| Sep 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Oct 19, 2022 | - | |
| Aug 31, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jun 14, 2025 | - | |
| Aug 31, 2022 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Aug 31, 2022 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Aug 31, 2022 | - | TT | Yes | No | - | - | - | Resolved | Nov 14, 2025 | - | |
| Aug 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Oct 19, 2022 | - | |
| Jul 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Oct 19, 2022 | - | |
| Jul 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jul 18, 2023 | - | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 13, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jul 18, 2023 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 1, 2021 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Aug 1, 2021 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Jul 1, 2021 | Sep 30, 2021 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2021 | - | |
| Dec 1, 2020 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2021 | - | |
| Oct 1, 2020 | - | RPT | No | No | - | - | - | Resolved | Dec 14, 2020 | - | |
| Jul 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2021 | - | |
| Jul 1, 2020 | Dec 31, 2020 | MR | No | No | - | TT | - | Archived | Dec 31, 2020 | - | |
| Jul 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2020 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.