What's in GRAND LAKE PWA's water?
GRAND LAKE PWA had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 2,800 people get their water from it, across 1,327 connections.
Ranked against every other system in this dataset
GRAND LAKE PWA has 98 violations on record in total, 32 of thems health-based - ranking it 517th of 12,903 systems by violation count, the 96th percentile nationally.
Against the OK average
OK's 240 covered systems average 39.5 health-based violations each; GRAND LAKE PWA carries 32, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
GRAND LAKE PWA's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2025-01-07. Last reported to EPA: 05/13/2026.
The concern categories on record
GRAND LAKE PWA'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:
- Radionuclides - flagged from: Combined Radium (-226 and -228)
- Microbial contamination / treatment technique - flagged from: Surface Water Treatment Rule
- Synthetic organic chemicals / pesticides / VOCs - flagged from: CARBON, TOTAL
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.
What GRAND LAKE PWA's record does not cover
This is what GRAND LAKE PWA 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 GRAND LAKE PWA's customers' taps is household plumbing, invisible to a system-level record ranked 517th of 12,903 by violation count. The guide to what this data misses covers that gap.