Is HOLYOKE CITY OF's water safe to drink?
HOLYOKE CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,540 people get their water from it, across 1,129 connections.
How this compares nationally
10 total violations and 3 health-based ones put HOLYOKE CITY OF at the 59th percentile nationally for violation burden, rank 5,297 of 12,903.
Against the CO average
CO's 230 covered systems average 3.0 health-based violations each; HOLYOKE CITY OF carries 3, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
HOLYOKE CITY OF's most recent violation on record is dated 2020-01-10, with the most recent health-based one dated 1994-01-10. Last reported to EPA: 06/17/2026.
The concern categories on record
HOLYOKE CITY OF'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)
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 HOLYOKE CITY OF's record does not cover
HOLYOKE CITY OF'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. This record - 3 health-based violations on file for HOLYOKE CITY OF - 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.