Mohawk Valley School District
PWSID: AZ0414055
This system has unresolved violations related to monitoring, reporting, or procedural requirements, but none involve contaminant levels exceeding EPA health limits.
This system has more violations on record than 99% of water systems in Arizona.
Violation trend: 99.4 per year over the last 5 years, up from 43.4 per year in the previous 5.
System Details
| Population Served | 171 |
| Service Connections | 11 |
| Water Source | Surface Water |
| System Type | Non-Transient Non-Community |
| Owner | Local Government |
| Status | Active |
| City | Roll |
| EPA ZIP on File | 85347 |
| Note | School or Daycare |
Areas Served
- Roll, Yuma County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0100 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0068 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0017 mg/L | 0.015 mg/L | Below Action Level |
3 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 7500 | Other | 2025-09-20 | Open | |
| 7500 | Other | 2025-09-04 | Open | |
| 5000 | MR | 2024-10-01 | Open |
Violation History (727 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 0200 | TT | 2025-09-01 | Yes | Acknowledged |
| 0200 | TT | 2025-08-01 | Yes | Acknowledged |
| 8000 | RPT | 2025-07-01 | Returned to Compliance | |
| 2950 | MCL Measured: 0.0990 MG/L (limit: 0.0800 MG/L) | 2025-07-01 | Yes | Acknowledged |
| 0200 | TT | 2025-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.2000 RATIO (limit: 1.00 RATIO) | 2025-07-01 | Yes | Acknowledged |
| 2456 | MR | 2025-07-01 | Major | Acknowledged |
| 0200 | TT | 2025-06-01 | Yes | Acknowledged |
| 0200 | TT | 2025-06-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.1070 MG/L (limit: 0.0800 MG/L) | 2025-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.0700 RATIO | 2025-04-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.0700 RATIO | 2025-04-01 | Yes | Acknowledged |
| 2456 | MR | 2025-04-01 | Major | Acknowledged |
| 2456 | MR | 2025-04-01 | Major | Returned to Compliance |
| 2920 | TT Measured: 0.0100 RATIO (limit: 1.00 RATIO) | 2025-01-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.0100 RATIO (limit: 1.00 RATIO) | 2025-01-01 | Yes | Acknowledged |
| 7500 | Other | 2024-10-20 | Returned to Compliance | |
| 2950 | MCL Measured: 0.1080 MG/L (limit: 0.0800 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 7500 | Other | 2024-09-12 | Returned to Compliance | |
| 0200 | MR | 2024-08-01 | Acknowledged | |
| 0200 | MR | 2024-08-01 | Acknowledged | |
| 0200 | MR | 2024-08-01 | Acknowledged | |
| 0300 | MR | 2024-08-01 | Acknowledged | |
| 0300 | MR | 2024-08-01 | Acknowledged | |
| 0300 | MR | 2024-08-01 | Acknowledged | |
| 0300 | TT | 2024-08-01 | Yes | Acknowledged |
| 0300 | TT | 2024-08-01 | Yes | Acknowledged |
| 0300 | TT | 2024-08-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9300 RATIO (limit: 1.00 RATIO) | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9300 RATIO (limit: 1.00 RATIO) | 2024-07-01 | Yes | Acknowledged |
| 2920 | TT Measured: 0.9300 RATIO (limit: 1.00 RATIO) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.1050 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.1050 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2920 | MR | 2024-07-01 | Major | Returned to Compliance |
| 2920 | MR | 2024-07-01 | Major | Acknowledged |
| 2920 | MR | 2024-07-01 | Major | Returned to Compliance |
| 2950 | MR | 2024-06-30 | Returned to Compliance | |
| 2950 | MR | 2024-06-30 | Returned to Compliance | |
| 0200 | MR | 2024-06-01 | Major | Returned to Compliance |
| 0200 | MR | 2024-06-01 | Major | Acknowledged |
| 0200 | MR | 2024-06-01 | Major | Returned to Compliance |
| 0200 | MR | 2024-06-01 | Major | Acknowledged |
| 0300 | MR | 2024-06-01 | Major | Returned to Compliance |
| 0300 | MR | 2024-06-01 | Major | Acknowledged |
| 0300 | MR | 2024-06-01 | Major | Returned to Compliance |
| 2950 | MCL Measured: 0.0840 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0840 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0840 MG/L (limit: 0.0800 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 0200 | MR | 2023-11-01 | Major | Returned to Compliance |
| 0200 | MR | 2023-11-01 | Major | Acknowledged |
Showing 50 of 724 historical violations.
Understanding This Water System's Record
Mohawk Valley School District is a non-transient non-community water system that draws from surface water sources and serves a population of 171 in Roll, Arizona. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.