PIERRE: EPA violation history, explained

PIERRE's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 14,091 people through 5,141 service connections.

PIERRE's record against the rest of the country

6 total violations and 0 health-based ones put PIERRE at the 15th percentile nationally for violation burden, rank 10,945 of 12,903.

How PIERRE compares within SD

SD's 74 covered systems average 3.0 health-based violations each; PIERRE carries 0, 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 PIERRE is from 2008-01-01. Last reported to EPA: 06/17/2026.

What this data is and is not

This is what PIERRE 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 6 logged violations can see. The guide to what this data misses covers that gap.