What's in NICHOLS HILLS's water?
NICHOLS HILLS 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: 4,020, over 1,924 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, NICHOLS HILLS ranks 837th by violation burden (94th percentile) - 96 violations total, 21 health-baseds.
Against the OK average
Among the 240 OK systems in this dataset, the average is 39.5 health-based violations - NICHOLS HILLS's 21 is at or below that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
NICHOLS HILLS's most recent violation on record is dated 2025-05-10, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 05/13/2026.
The concern categories on record
NICHOLS HILLS'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:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
- Radionuclides - flagged from: Combined Uranium; Gross Alpha, Excl. Radon and U
- Other regulated metals - flagged from: Arsenic; Selenium
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What NICHOLS HILLS's record does not cover
This is what NICHOLS HILLS 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 - 21 health-based violations on file for NICHOLS HILLS - 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.