UNITED WATER SYSTEM: EPA violation history, explained
UNITED WATER SYSTEM had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 4,446, over 1,494 connections.
UNITED WATER SYSTEM's record against the rest of the country
36 total violations and 24 health-based ones put UNITED WATER SYSTEM at the 94th percentile nationally for violation burden, rank 748 of 12,903.
How UNITED WATER SYSTEM compares within LA
Among the 347 LA systems in this dataset, the average is 12.6 health-based violations - UNITED WATER SYSTEM's 24 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for UNITED WATER SYSTEM is from 2023-12-05 (health-based: 2023-12-05). Last reported to EPA: 06/23/2026.
What kind of problem, specifically
UNITED WATER SYSTEM's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: Lead and Copper Rule
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Groundwater Rule
- Other regulated metals - flagged from: Arsenic
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
UNITED WATER SYSTEM's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and UNITED WATER SYSTEM's customers' taps is household plumbing, invisible to a system-level record ranked 748th of 12,903 by violation count. The guide to what this data misses covers that gap.