State
Oklahoma: drinking water records
EPA lists 883 community water systems serving homes in Oklahoma. 166 took part in EPA's national PFAS survey (UCMR 5), and 68 found at least one PFAS above the level laboratories can measure.
In focus883community water systems
Public records. Clearer context.
0
ZIP reports published
883
community water systems
648
systems with a health-based violation since 2016
64
systems that reached the lead action level since 2016
Counties
- Adair County 9 systems
- Alfalfa County 9 systems
- Atoka County 8 systems
- Beaver County 4 systems
- Beckham County 8 systems
- Blaine County 8 systems
- Bryan County 13 systems
- Caddo County 15 systems
- Canadian County 13 systems
- Carter County 8 systems
- Cherokee County 23 systems
- Choctaw County 9 systems
- Cimarron County 2 systems
- Cleveland County 12 systems
- Coal County 8 systems
- Comanche County 23 systems
- Cotton County 5 systems
- Craig County 10 systems
- Creek County 14 systems
- Custer County 11 systems
- Delaware County 26 systems
- Dewey County 6 systems
- Ellis County 5 systems
- Garfield County 21 systems
- Garvin County 13 systems
- Grady County 16 systems
- Grant County 10 systems
- Greer County 7 systems
- Harmon County 3 systems
- Harper County 3 systems
- Haskell County 4 systems
- Hughes County 9 systems
- Jackson County 11 systems
- Jefferson County 6 systems
- Johnston County 10 systems
- Kay County 13 systems
- Kingfisher County 8 systems
- Kiowa County 9 systems
- Latimer County 6 systems
- Le Flore County 20 systems
- Lincoln County 15 systems
- Logan County 14 systems
- Love County 4 systems
- Major County 6 systems
- Marshall County 7 systems
- Mayes County 19 systems
- McClain County 12 systems
- McCurtain County 13 systems
- McIntosh County 11 systems
- Murray County 7 systems
- Muskogee County 18 systems
- Noble County 10 systems
- Nowata County 12 systems
- Okfuskee County 6 systems
- Oklahoma County 37 systems
- Okmulgee County 15 systems
- Osage County 27 systems
- Ottawa County 15 systems
- Pawnee County 13 systems
- Payne County 12 systems
- Pittsburg County 22 systems
- Pontotoc County 10 systems
- Pottawatomie County 17 systems
- Pushmataha County 7 systems
- Roger Mills County 5 systems
- Rogers County 15 systems
- Seminole County 10 systems
- Sequoyah County 14 systems
- Stephens County 6 systems
- Texas County 10 systems
- Tillman County 7 systems
- Tulsa County 13 systems
- Wagoner County 13 systems
- Washington County 11 systems
- Washita County 10 systems
- Woods County 7 systems
- Woodward County 9 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.