Washington Co RWD #3 (New,#1)

Water Quality Snapshot: Washington Co RWD #3 (New,#1)

Washington Co RWD #3 (New,#1) is a local-owned community water system that delivers drinking water to 25,375 residents in Collinsville, Oklahoma (Tulsa County) through 11,862 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 37 total violations for this system , of which 5 (14%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 23 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Chlorine, recorded in 8 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Oklahoma, EPA tracks 1,262 public water systems serving 3,699,452 people, with 336,706 cumulative violations and 113,804 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 266.8 violations. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%).

Washington Co RWD #3 (New,#1)'s 37 violations sit below the Oklahoma average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.