What's in EAST NILES CSD's water?
EAST NILES CSD has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. 32,517 people get their water from it, across 8,293 connections.
How this compares nationally
24 total violations and 22 health-based ones put EAST NILES CSD at the 94th percentile nationally for violation burden, rank 829 of 12,903.
How EAST NILES CSD compares within CA
CA's 803 covered systems average 5.8 health-based violations each; EAST NILES CSD carries 22, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for EAST NILES CSD is from 2025-05-10 (health-based: 2025-05-10). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
EAST NILES CSD'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 REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
- Other regulated metals - flagged from: Arsenic
- Disinfection byproducts - flagged from: Total Haloacetic Acids (HAA5)
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
EAST NILES CSD'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 EAST NILES CSD's customers' taps is household plumbing, invisible to a system-level record ranked 829th of 12,903 by violation count. The guide to what this data misses covers that gap.