HANFORD, CITY OF
PWSID: CA1610003 · Hanford, CA · Serves 62,127 people
HANFORD, CITY OF has 18 health-based violations out of 18 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
HANFORD, CITY OF (PWSID CA1610003) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 62,127 people in Hanford, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 18 total violations, with 18 classified as health-based (MCL exceedances or treatment-technique failures). 2 distinct contaminants have been cited, including Total Coliform (RTCR), Total Trihalomethanes (TTHM). Recorded violations span 1997–2021.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA1610003
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hanford, CA
- Population Served
- 62,127
- Health Violations
- Yes (18)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Total Coliform (RTCR) | 11 | 11 |
| Total Trihalomethanes (TTHM) | 7 | 7 |
Violation History (18)
| Contaminant | Health | Date |
|---|---|---|
| Total Trihalomethanes (TTHM) | Yes | Apr 1, 2021 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2021 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2021 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2020 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2020 |
| Total Trihalomethanes (TTHM) | Yes | Jul 1, 2020 |
| Total Trihalomethanes (TTHM) | Yes | Jul 1, 2020 |
| Total Coliform (RTCR) | Yes | Oct 1, 2014 |
| Total Coliform (RTCR) | Yes | Sep 1, 2014 |
| Total Coliform (RTCR) | Yes | Aug 1, 2014 |
| Total Coliform (RTCR) | Yes | Jul 1, 2014 |
| Total Coliform (RTCR) | Yes | Jun 1, 2014 |
| Total Coliform (RTCR) | Yes | Oct 1, 2009 |
| Total Coliform (RTCR) | Yes | Sep 1, 2002 |
| Total Coliform (RTCR) | Yes | Jun 1, 2000 |
| Total Coliform (RTCR) | Yes | Nov 1, 1998 |
| Total Coliform (RTCR) | Yes | Nov 1, 1997 |
| Total Coliform (RTCR) | Yes | Oct 1, 1997 |
Frequently Asked Questions
Is HANFORD, CITY OF water safe to drink?
How many people does HANFORD, CITY OF serve?
What violations does HANFORD, CITY OF have?
What contaminants have been found in HANFORD, CITY OF water?
Nearby Water Systems
Explore More
About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.