Is MOUNT VERNON WATER SUPPLY's water safe to drink?

MOUNT VERNON WATER SUPPLY's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 4,527 people get their water from it, across 1,360 connections.

Ranked against every other system in this dataset

9 total violations and 0 health-based ones put MOUNT VERNON WATER SUPPLY at the 18th percentile nationally for violation burden, rank 10,563 of 12,903.

How MOUNT VERNON WATER SUPPLY compares within IA

Among the 203 IA systems in this dataset, the average is 3.5 health-based violations - MOUNT VERNON WATER SUPPLY's 0 is at or below that. 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 MOUNT VERNON WATER SUPPLY is from 2013-08-06. Last reported to EPA: 06/17/2026.

What this data is and is not

This is what MOUNT VERNON WATER SUPPLY 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 - 0 health-based violations on file for MOUNT VERNON WATER SUPPLY - 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.