What's in MARSHALL PWS's water?
MARSHALL PWS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 12,934 people through 5,115 service connections.
MARSHALL PWS's record against the rest of the country
MARSHALL PWS has 14 violations on record in total, 11 of thems health-based - ranking it 1,841th of 12,903 systems by violation count, the 86th percentile nationally.
Against the MO average
MARSHALL PWS's 11 health-based violations sit above the MO average of 6.1, across 327 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
MARSHALL PWS's most recent violation on record is dated 2018-01-07, with the most recent health-based one dated 2018-01-07. Last reported to EPA: 06/16/2026.
The concern categories on record
MARSHALL PWS'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: Groundwater Rule
- Disinfection byproducts - flagged from: TTHM
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 MARSHALL PWS's record does not cover
This is what MARSHALL PWS 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. Between the utility's meter and MARSHALL PWS's customers' taps is household plumbing, invisible to a system-level record ranked 1,841th of 12,903 by violation count. The guide to what this data misses covers that gap.