Is Oklahoma City, OK tap water safe?
The short answer
4 of the 10 utilities serving Oklahoma City have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Oklahoma’s records: City of Mustang, Nichols Hills, Bethany and 1 more.
Oklahoma City, which serves the most people here, has 1 result above EPA’s health benchmark. The worst: Lithium at 67.8 ppb, above EPA’s health benchmark. A health benchmark is a level EPA screens with, not a legal limit.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Oklahoma City’s ZIP codes, from EPA’s estimates.
- Open report
Oklahoma City
Oklahoma · serves 644,000 people · about 524,200 in Oklahoma City
1 result above EPA’s health benchmark. The worst: Lithium at 67.8 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
City of Mustang
Oklahoma · serves 18,576 people · nearly all in Oklahoma City
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 20.3 ppb, above EPA’s health benchmark.
1 health-based violation since 2016
- Open report
Yukon
Oklahoma · serves 22,498 people · nearly all in Oklahoma City
2 results above the health goal. The worst: Arsenic at 4.1 ppb, above the health goal.
No health-based violations since 2016
- Open report
Edmond Pwa
Oklahoma · serves 79,408 people · about 14,200 in Oklahoma City
1 result above EPA’s new limit, which takes effect in 2029, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOS at 6.4 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Midwest City
Oklahoma · serves 55,935 people · about 12,200 in Oklahoma City
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.4 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Deer Creek Rural Water Corp
Oklahoma · serves 5,500 people · nearly all in Oklahoma City
2 results above the health goal. The worst: Arsenic at 5.9 ppb, above the health goal.
No health-based violations since 2016
- Open report
Nichols Hills
Oklahoma · serves 4,020 people · nearly all in Oklahoma City
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17 ppb, above EPA’s health benchmark.
3 health-based violations since 2016
- Open report
Bethany
Oklahoma · serves 20,307 people · about 5,300 in Oklahoma City
2 results above EPA’s new limit, which takes effect in 2029 and 1 result above EPA’s health benchmark. The worst: PFOA at 5.3 ppt, above EPA’s new limit, which takes effect in 2029.
1 health-based violation since 2016
- Open report
Moore Public Works Authority
Oklahoma · serves 55,083 people · about 4,400 in Oklahoma City
1 result above the legal limit, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Arsenic at 6.1 ppb, above the legal limit.
7 health-based violations since 2016
- Open report
Choctaw UA
Oklahoma · serves 3,926 people · about 3,100 in Oklahoma City
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.1 ppb, above EPA’s health benchmark.
No health-based violations since 2016
Water testing near Oklahoma City
TapBuff hasn’t read Oklahoma’s list of certified labs yet. The national page links every state’s own list.
Certified labs, state by stateZIP codes in Oklahoma City
Which ZIP codes are in Oklahoma City: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology.
Near Oklahoma City
Other towns in Oklahoma County with a page of their own.
What to do next
- Read Oklahoma City’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water