MAYES CO RWD # 9: EPA violation history, explained
MAYES CO RWD # 9 had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 2,578 people get their water from it, across 930 connections.
MAYES CO RWD # 9's record against the rest of the country
MAYES CO RWD # 9 has 143 violations on record in total, 23 of thems health-based - ranking it 764th of 12,903 systems by violation count, the 94th percentile nationally.
How MAYES CO RWD # 9 compares within OK
Among the 240 OK systems in this dataset, the average is 39.5 health-based violations - MAYES CO RWD # 9's 23 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for MAYES CO RWD # 9 is from 2026-01-01 (health-based: 2025-05-10). Last reported to EPA: 05/13/2026.
What kind of problem, specifically
MAYES CO RWD # 9'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: Interim Enhanced 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 lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
MAYES CO RWD # 9's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and MAYES CO RWD # 9's customers' taps is household plumbing, invisible to a system-level record ranked 764th of 12,903 by violation count. The guide to what this data misses covers that gap.