What's in HANNIBAL PWS's water?
HANNIBAL PWS had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 17,108, over 7,348 connections.
HANNIBAL PWS's record against the rest of the country
HANNIBAL PWS has 68 violations on record in total, 25 of thems health-based - ranking it 701th of 12,903 systems by violation count, the 95th percentile nationally.
How HANNIBAL PWS compares within MO
Among the 327 MO systems in this dataset, the average is 6.1 health-based violations - HANNIBAL PWS's 25 is above that. 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 HANNIBAL PWS is from 2025-02-07 (health-based: 2023-01-08). Last reported to EPA: 06/16/2026.
What kind of problem, specifically
HANNIBAL 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: Long Term 2 Enhanced Surface Water Treatment Rule; Revised Total Coliform Rule; Surface Water Treatment 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 this data is and is not
This is what HANNIBAL 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 HANNIBAL PWS's customers' taps is household plumbing, invisible to a system-level record ranked 701th of 12,903 by violation count. The guide to what this data misses covers that gap.