WHITE HORSE RANCH OWNERS ASSOCIATION
Arizona — Community Water System — PWSID: AZ0413221
System Information
| PWSID | AZ0413221 |
| System Name | WHITE HORSE RANCH OWNERS ASSOCIATION |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Mixed |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 18, 2001 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Arizona |
| City | PRESCOTT |
| ZIP Code | 86304 |
| Address | — |
| Organization | WHITE HORSE RANCH HOA |
| Phone | 928-445-0551 |
Population & Service
| Population Served | 292 |
| Service Connections | 160 |
Drinking Water Violations (150)
This water system has 150 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | Nitrate | MCL | Yes | No | 24 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2025 | Nitrate Rule |
| Jul 1, 2025 | Sep 30, 2025 | Nitrate | MCL | Yes | No | 24 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2025 | Nitrate Rule |
| Jul 1, 2025 | Sep 30, 2025 | Nitrate | MCL | Yes | No | 24 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate | MCL | Yes | No | 22 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate | MCL | Yes | No | 22 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate | MCL | Yes | No | 22 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate | MCL | Yes | No | 22 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2025 | Nitrate Rule |
| Jan 1, 2025 | Mar 31, 2025 | Nitrate | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2025 | Nitrate Rule |
| Jan 1, 2025 | Mar 31, 2025 | Nitrate | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2025 | Nitrate Rule |
| Jan 1, 2025 | Mar 31, 2025 | Nitrate | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2025 | Nitrate Rule |
| Jan 1, 2025 | Mar 31, 2025 | Nitrate | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2025 | Nitrate Rule |
| Nov 14, 2024 | — | Public Notice | Other | No | No | — | — | — | Resolved | Jan 2, 2024 | Public Notice Rule and Revised PN Rule |
| Nov 14, 2024 | — | Public Notice | Other | No | No | — | — | — | Resolved | Jan 2, 2024 | Public Notice Rule and Revised PN Rule |
| Oct 1, 2024 | Dec 31, 2024 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2024 | Nitrate Rule |
| Oct 1, 2024 | Dec 31, 2024 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2024 | Nitrate Rule |
| Oct 1, 2024 | Dec 31, 2024 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2024 | Nitrate Rule |
| Oct 1, 2024 | Dec 31, 2024 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2024 | Nitrate Rule |
| Sep 6, 2024 | — | Public Notice | Other | No | No | — | — | — | Resolved | Oct 29, 2024 | Public Notice Rule and Revised PN Rule |
| Sep 6, 2024 | — | Public Notice | Other | No | No | — | — | — | Resolved | Oct 29, 2024 | Public Notice Rule and Revised PN Rule |
| Jul 1, 2024 | Sep 30, 2024 | Nitrate | MCL | Yes | No | 17 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2024 | Nitrate Rule |
| Jul 1, 2024 | Sep 30, 2024 | Nitrate | MCL | Yes | No | 17 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2024 | Nitrate Rule |
| Jul 1, 2024 | Sep 30, 2024 | Nitrate | MCL | Yes | No | 17 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2024 | Nitrate Rule |
| Jul 1, 2024 | Sep 30, 2024 | Nitrate | MCL | Yes | No | 17 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2024 | Nitrate Rule |
| Apr 1, 2024 | Jun 30, 2024 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2024 | Nitrate Rule |
| Apr 1, 2024 | Jun 30, 2024 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2024 | Nitrate Rule |
| Apr 1, 2024 | Jun 30, 2024 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2024 | Nitrate Rule |
| Apr 1, 2024 | Jun 30, 2024 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2024 | Nitrate Rule |
| Jan 1, 2024 | Mar 31, 2024 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2024 | Nitrate Rule |
| Jan 1, 2024 | Mar 31, 2024 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2024 | Nitrate Rule |
| Jan 1, 2024 | Mar 31, 2024 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2024 | Nitrate Rule |
| Jan 1, 2024 | Mar 31, 2024 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2024 | Nitrate Rule |
| Oct 1, 2023 | Dec 31, 2023 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2023 | Nitrate Rule |
| Oct 1, 2023 | Dec 31, 2023 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2023 | Nitrate Rule |
| Oct 1, 2023 | Dec 31, 2023 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2023 | Nitrate Rule |
| Oct 1, 2023 | Dec 31, 2023 | Nitrate | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2023 | Nitrate Rule |
| Jul 1, 2023 | Sep 30, 2023 | Nitrate | MCL | Yes | No | 18 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2023 | Nitrate Rule |
| Jul 1, 2023 | Sep 30, 2023 | Nitrate | MCL | Yes | No | 18 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2023 | Nitrate Rule |
| Jul 1, 2023 | Sep 30, 2023 | Nitrate | MCL | Yes | No | 18 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2023 | Nitrate Rule |
| Jul 1, 2023 | Sep 30, 2023 | Nitrate | MCL | Yes | No | 18 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2023 | Nitrate Rule |
| Apr 1, 2023 | Jun 30, 2023 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | Nitrate Rule |
| Apr 1, 2023 | Jun 30, 2023 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | Nitrate Rule |
| Apr 1, 2023 | Jun 30, 2023 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | Nitrate Rule |
| Apr 1, 2023 | Jun 30, 2023 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | Nitrate Rule |
| Jan 1, 2023 | Mar 31, 2023 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2023 | Nitrate Rule |
| Jan 1, 2023 | Mar 31, 2023 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2023 | Nitrate Rule |
| Jan 1, 2023 | Mar 31, 2023 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2023 | Nitrate Rule |
| Jan 1, 2023 | Mar 31, 2023 | Nitrate | MCL | Yes | No | 15 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2023 | Nitrate Rule |
| Oct 1, 2022 | Dec 31, 2022 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2022 | Nitrate Rule |
| Oct 1, 2022 | Dec 31, 2022 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2022 | Nitrate Rule |
| Oct 1, 2022 | Dec 31, 2022 | Nitrate | MCL | Yes | No | 14 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2022 | Nitrate Rule |
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.