What's in BILLINGS CITY OF's water?

BILLINGS CITY OF's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 114,000, over 33,575 connections.

How this compares nationally

4 total violations and 0 health-based ones put BILLINGS CITY OF at the 12th percentile nationally for violation burden, rank 11,295 of 12,903.

Against the MT average

BILLINGS CITY OF's 0 health-based violations sit within the MT average of 6.7, across 59 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

BILLINGS CITY OF's most recent violation on record is dated 1998-01-11. Last reported to EPA: 06/29/2026.

What BILLINGS CITY OF's record does not cover

Everything on this page is BILLINGS CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and BILLINGS CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 11,295th of 12,903 by violation count. The guide to what this data misses covers that gap.