CASS COUNTY PWSD 9: EPA violation history, explained
CASS COUNTY PWSD 9 has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 6,063 people through 2,461 service connections.
CASS COUNTY PWSD 9's record against the rest of the country
4 total violations and 1 health-based ones put CASS COUNTY PWSD 9 at the 31th percentile nationally for violation burden, rank 8,870 of 12,903.
How CASS COUNTY PWSD 9 compares within MO
Among the 327 MO systems in this dataset, the average is 6.1 health-based violations - CASS COUNTY PWSD 9's 1 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CASS COUNTY PWSD 9 is from 2010-01-09 (health-based: 2010-01-09). Last reported to EPA: 06/16/2026.
What kind of problem, specifically
CASS COUNTY PWSD 9'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
Everything on this page is CASS COUNTY PWSD 9'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 CASS COUNTY PWSD 9's customers' taps is household plumbing, invisible to a system-level record ranked 8,870th of 12,903 by violation count. The guide to what this data misses covers that gap.