Chester Water Authority, PA Water Quality
Is Chester Water Authority's water safe to drink?
Chester Water Authority's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 140,437, over 44,371 connections.
How this compares nationally
Chester Water Authority has 2 violations on record in total, 0 of them health-based - ranking it 11,862th of 12,903 systems by violation count, the 8th percentile nationally.
Against the PA average
Chester Water Authority's 0 health-based violations sit within the PA average of 5.5, across 475 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Chester Water Authority's most recent violation on record is dated 2011-01-07. Last reported to EPA: 06/15/2026.
What Chester Water Authority's record does not cover
This is what Chester Water Authority 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 Chester Water Authority's customers' taps is household plumbing, invisible to a system-level record ranked 11,862th of 12,903 by violation count. The guide to what this data misses covers that gap.