Katherine Landing Dwtp
PWSID: AZ0408701
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 98% of water systems in Nevada.
Violation trend: 42.0 per year over the last 5 years, up from 8.2 per year in the previous 5.
System Details
| Population Served | 1,300 |
| Service Connections | 41 |
| Water Source | Surface Water |
| System Type | Community Water System |
| Owner | Federal |
| Status | Active |
| City | Boulder City |
| EPA ZIP on File | 89005 |
Areas Served
- Katherine Landing, Mohave County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0150 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0140 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0025 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0017 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 7500 | Other | 2024-12-02 | Open | |
| 7500 | Other | 2024-01-02 | Open |
Violation History (270 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 7500 | Other | 2025-05-01 | Returned to Compliance | |
| 2456 | MR | 2025-04-01 | Returned to Compliance | |
| 0200 | MR | 2025-02-01 | Major | Acknowledged |
| 0300 | MR | 2025-02-01 | Major | Acknowledged |
| 7500 | Other | 2025-01-31 | Returned to Compliance | |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2025-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2025-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0650 MG/L (limit: 0.0600 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0650 MG/L (limit: 0.0600 MG/L) | 2024-10-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0650 MG/L (limit: 0.0600 MG/L) | 2024-10-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0730 MG/L (limit: 0.0600 MG/L) | 2024-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0730 MG/L (limit: 0.0600 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0730 MG/L (limit: 0.0600 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0730 MG/L (limit: 0.0600 MG/L) | 2024-07-01 | Yes | Returned to Compliance |
| 2456 | MR | 2024-06-30 | Returned to Compliance | |
| 2456 | MR | 2024-06-30 | Returned to Compliance | |
| 2456 | MR | 2024-06-30 | Returned to Compliance | |
| 8000 | MON | 2024-06-01 | Major | Returned to Compliance |
| 8000 | MON | 2024-06-01 | Major | Acknowledged |
| 8000 | MON | 2024-06-01 | Major | Returned to Compliance |
| 8000 | RPT | 2024-05-01 | Returned to Compliance | |
| 8000 | MON | 2024-05-01 | Major | Acknowledged |
| 8000 | RPT | 2024-05-01 | Returned to Compliance | |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2024-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0660 MG/L (limit: 0.0600 MG/L) | 2024-04-01 | Yes | Returned to Compliance |
| 0999 | MR | 2024-04-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-04-01 | Major | Acknowledged |
| 0999 | MR | 2024-04-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-03-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-03-01 | Major | Acknowledged |
| 0999 | MR | 2024-03-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-03-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-02-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-02-01 | Major | Acknowledged |
| 0999 | MR | 2024-02-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-02-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-01-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-01-01 | Major | Acknowledged |
| 0999 | MR | 2024-01-01 | Major | Returned to Compliance |
| 0999 | MR | 2024-01-01 | Major | Returned to Compliance |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2024-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 0200 | MR | 2023-11-01 | Major | Returned to Compliance |
| 0200 | MR | 2023-11-01 | Major | Acknowledged |
| 0999 | MR | 2023-10-01 | Major | Acknowledged |
Showing 50 of 268 historical violations.
Understanding This Water System's Record
Katherine Landing Dwtp is a community water system water system that draws from surface water sources and serves a population of 1,300 in Boulder City, Nevada. 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.