MCFARLAND WATERWORKS: EPA violation history, explained

MCFARLAND WATERWORKS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 9,676 people through 3,583 service connections.

Ranked against every other system in this dataset

MCFARLAND WATERWORKS has 8 violations on record in total, 1 of them health-based - ranking it 8,368th of 12,903 systems by violation count, the 35th percentile nationally.

How MCFARLAND WATERWORKS compares within WI

WI's 202 covered systems average 3.6 health-based violations each; MCFARLAND WATERWORKS carries 1, not 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 MCFARLAND WATERWORKS is from 2008-01-05 (health-based: 1993-01-07). Last reported to EPA: 05/29/2026.

What kind of problem, specifically

MCFARLAND WATERWORKS'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 this data is and is not

MCFARLAND WATERWORKS'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 - 1 health-based violation on file for MCFARLAND WATERWORKS - 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.