CASAS ARROYO ASSOCIATION INC
Arizona - Community Water System - PWSID: AZ0412020
System Information
| PWSID | AZ0412020 |
| System Name | CASAS ARROYO ASSOCIATION INC |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | SONOITA |
| ZIP Code | 85637 |
| Address | PO BOX 1040 |
| Organization | POWELL, ERIK |
| Phone | 520-444-0410 |
Population & Service
| Population Served | 27 |
| Service Connections | 27 |
Drinking Water Violations (121)
This water system has 121 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 12, 2025 | - | Other | No | No | - | - | - | Resolved | May 2, 2025 | - | |
| May 12, 2025 | - | Other | No | No | - | - | - | Resolved | May 2, 2025 | - | |
| May 12, 2025 | - | Other | No | No | - | - | - | Resolved | May 2, 2025 | - | |
| Mar 23, 2025 | - | TT | Yes | No | - | - | - | Resolved | Jun 18, 2025 | - | |
| Mar 23, 2025 | - | TT | Yes | No | - | - | - | Resolved | Jun 18, 2025 | - | |
| Mar 23, 2025 | - | TT | Yes | No | - | - | - | Resolved | Jun 18, 2025 | - | |
| Mar 23, 2025 | - | TT | Yes | No | - | - | - | Resolved | Jun 18, 2025 | - | |
| Mar 23, 2025 | - | TT | Yes | No | - | - | - | Resolved | Jun 18, 2025 | - | |
| Dec 20, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Dec 20, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 27, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Oct 15, 2024 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Oct 15, 2024 | - | |
| Dec 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2023 | - | |
| Dec 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Jan 27, 2023 | - | |
| Oct 2, 2022 | - | Other | No | No | - | - | - | Resolved | Oct 18, 2022 | - | |
| Oct 2, 2022 | - | Other | No | No | - | - | - | Resolved | Oct 18, 2022 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2021 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2021 | - | |
| Jun 18, 2020 | - | MR | No | Yes | - | - | - | Resolved | Jun 29, 2020 | - | |
| Jun 18, 2020 | - | MR | No | Yes | - | - | - | Resolved | Jun 29, 2020 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Apr 1, 2019 | - | RPT | No | No | - | - | - | Resolved | May 14, 2019 | - | |
| Apr 1, 2019 | - | RPT | No | No | - | - | - | Resolved | May 14, 2019 | - | |
| Oct 1, 2016 | - | Other | No | No | - | - | - | Resolved | Mar 16, 2017 | - | |
| Oct 1, 2016 | - | Other | No | No | - | - | - | Resolved | Mar 16, 2017 | - | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Apr 22, 2017 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Apr 22, 2017 | - | |
| Jul 1, 2016 | Sep 30, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2016 | - | |
| Apr 1, 2014 | Apr 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2014 | - | |
| Apr 1, 2014 | Apr 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Apr 10, 2014 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Apr 10, 2014 | - | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2013 | - | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2013 | - | |
| Oct 1, 2012 | - | Other | No | No | - | - | - | Resolved | Jun 30, 2013 | - |
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.