Is Nicoma Park, OK tap water safe?
The short answer
1 of the 4 utilities serving Nicoma Park has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Oklahoma’s records: Spencer.
Choctaw UA, which serves the most people here, has 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. Health goals are stricter than legal limits and are not enforced.
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 Nicoma Park’s ZIP codes, from EPA’s estimates.
- Open report
Choctaw UA
Oklahoma · serves 3,926 people · about 360 in Nicoma Park
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
- Open report
Midwest City
Oklahoma · serves 55,935 people · about 200 in Nicoma Park
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
Spencer
Oklahoma · serves 3,746 people · under 100 in Nicoma Park
1 result above the health goal. The worst: Lead at 2.3 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Oklahoma City
Oklahoma · serves 644,000 people · under 100 in Nicoma Park
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
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Choctaw UA’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Nicoma Park
TapBuff hasn’t read Oklahoma’s list of certified labs yet. The national page links every state’s own list.
Certified labs, state by stateWhich ZIP codes are in Nicoma Park: 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 Nicoma Park
Other towns in Oklahoma County with a page of their own.
What to do next
- Read Choctaw UA’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