What's in CHESTERFIELD WD's water?
CHESTERFIELD WD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,300 people get their water from it, across 1,000 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, CHESTERFIELD WD ranks 290th by violation burden (98th percentile) - 126 violations total, 48 health-baseds.
Against the NY average
CHESTERFIELD WD's 48 health-based violations sit above the NY average of 4.1, across 443 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
CHESTERFIELD WD's most recent violation on record is dated 2018-01-04, with the most recent health-based one dated 2018-01-04. Last reported to EPA: 06/25/2026.
The concern categories on record
CHESTERFIELD WD'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:
- Microbial contamination / treatment technique - flagged from: Interim Enhanced Surface Water Treatment Rule; Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What CHESTERFIELD WD's record does not cover
This is what CHESTERFIELD WD reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and CHESTERFIELD WD's customers' taps is household plumbing, invisible to a system-level record ranked 290th of 12,903 by violation count. The guide to what this data misses covers that gap.