What's in GUILFORD WATER AUTH's water?
GUILFORD WATER AUTH has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 28,135 people through 11,668 service connections.
Ranked against every other system in this dataset
200 total violations and 16 health-based ones put GUILFORD WATER AUTH at the 91th percentile nationally for violation burden, rank 1,122 of 12,903.
How GUILFORD WATER AUTH compares within PA
PA's 475 covered systems average 5.5 health-based violations each; GUILFORD WATER AUTH carries 16, more than typical for the state. 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 GUILFORD WATER AUTH is from 2025-01-01 (health-based: 2017-01-12). Last reported to EPA: 06/15/2026.
What kind of problem, specifically
GUILFORD WATER AUTH'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: Coliform (TCR); Groundwater Rule; Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM
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 this data is and is not
This is what GUILFORD WATER AUTH 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. This record - 16 health-based violations on file for GUILFORD WATER AUTH - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.