Is TONKAWA's water safe to drink?
TONKAWA had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 3,299 people through 1,255 service connections.
How this compares nationally
42 total violations and 6 health-based ones put TONKAWA at the 77th percentile nationally for violation burden, rank 3,008 of 12,903.
Against the OK average
OK's 240 covered systems average 39.5 health-based violations each; TONKAWA carries 6, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
TONKAWA's most recent violation on record is dated 2026-02-08, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 05/13/2026.
The concern categories on record
TONKAWA'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)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What TONKAWA's record does not cover
Everything on this page is TONKAWA'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 TONKAWA's customers' taps is household plumbing, invisible to a system-level record ranked 3,008th of 12,903 by violation count. The guide to what this data misses covers that gap.