HUGHSON, CITY OF
PWSID: CA5010008 · Hughson, CA · Serves 7,481 people
HUGHSON, CITY OF has 75 health-based violations out of 75 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
HUGHSON, CITY OF (PWSID CA5010008) 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 7,481 people in Hughson, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 75 total violations, with 75 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Barium, Contaminant 2414, Gross Alpha. Recorded violations span 2016–2025.
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)
- CA5010008
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hughson, CA
- Population Served
- 7,481
- Health Violations
- Yes (75)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Barium | 72 | 72 |
| Contaminant 2414 | 2 | 2 |
| Gross Alpha | 1 | 1 |
Violation History (75)
| Contaminant | Health | Date |
|---|---|---|
| Barium | Yes | Jul 1, 2025 |
| Barium | Yes | Apr 1, 2025 |
| Barium | Yes | Jan 1, 2025 |
| Gross Alpha | Yes | Oct 17, 2024 |
| Barium | Yes | Oct 1, 2024 |
| Barium | Yes | Jul 1, 2024 |
| Barium | Yes | Jul 1, 2024 |
| Barium | Yes | Apr 1, 2024 |
| Barium | Yes | Apr 1, 2024 |
| Barium | Yes | Jan 1, 2024 |
| Barium | Yes | Jan 1, 2024 |
| Barium | Yes | Oct 1, 2023 |
| Barium | Yes | Oct 1, 2023 |
| Barium | Yes | Jul 1, 2023 |
| Barium | Yes | Jul 1, 2023 |
| Barium | Yes | Apr 1, 2023 |
| Barium | Yes | Apr 1, 2023 |
| Contaminant 2414 | Yes | Apr 1, 2023 |
| Barium | Yes | Jan 1, 2023 |
| Barium | Yes | Jan 1, 2023 |
| Contaminant 2414 | Yes | Jan 1, 2023 |
| Barium | Yes | Oct 1, 2022 |
| Barium | Yes | Oct 1, 2022 |
| Barium | Yes | Oct 1, 2022 |
| Barium | Yes | Jul 1, 2022 |
| Barium | Yes | Jul 1, 2022 |
| Barium | Yes | Jul 1, 2022 |
| Barium | Yes | Apr 1, 2022 |
| Barium | Yes | Apr 1, 2022 |
| Barium | Yes | Jan 1, 2022 |
| Barium | Yes | Jan 1, 2022 |
| Barium | Yes | Oct 1, 2021 |
| Barium | Yes | Oct 1, 2021 |
| Barium | Yes | Jul 1, 2021 |
| Barium | Yes | Jul 1, 2021 |
| Barium | Yes | Apr 1, 2021 |
| Barium | Yes | Apr 1, 2021 |
| Barium | Yes | Jan 1, 2021 |
| Barium | Yes | Jan 1, 2021 |
| Barium | Yes | Oct 1, 2020 |
| Barium | Yes | Oct 1, 2020 |
| Barium | Yes | Jul 1, 2020 |
| Barium | Yes | Jul 1, 2020 |
| Barium | Yes | Apr 1, 2020 |
| Barium | Yes | Apr 1, 2020 |
| Barium | Yes | Jan 1, 2020 |
| Barium | Yes | Jan 1, 2020 |
| Barium | Yes | Oct 1, 2019 |
| Barium | Yes | Oct 1, 2019 |
| Barium | Yes | Jul 1, 2019 |
| Barium | Yes | Jul 1, 2019 |
| Barium | Yes | Apr 1, 2019 |
| Barium | Yes | Apr 1, 2019 |
| Barium | Yes | Jan 1, 2019 |
| Barium | Yes | Jan 1, 2019 |
| Barium | Yes | Oct 1, 2018 |
| Barium | Yes | Oct 1, 2018 |
| Barium | Yes | Jul 1, 2018 |
| Barium | Yes | Jul 1, 2018 |
| Barium | Yes | Apr 1, 2018 |
| Barium | Yes | Apr 1, 2018 |
| Barium | Yes | Jan 1, 2018 |
| Barium | Yes | Jan 1, 2018 |
| Barium | Yes | Oct 1, 2017 |
| Barium | Yes | Oct 1, 2017 |
| Barium | Yes | Jul 1, 2017 |
| Barium | Yes | Jul 1, 2017 |
| Barium | Yes | Jan 1, 2017 |
| Barium | Yes | Jan 1, 2017 |
| Barium | Yes | Oct 1, 2016 |
| Barium | Yes | Oct 1, 2016 |
| Barium | Yes | Apr 1, 2016 |
| Barium | Yes | Apr 1, 2016 |
| Barium | Yes | Jan 1, 2016 |
| Barium | Yes | Jan 1, 2016 |
Frequently Asked Questions
Is HUGHSON, CITY OF water safe to drink?
How many people does HUGHSON, CITY OF serve?
What violations does HUGHSON, CITY OF have?
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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.