Stillwater, OK (74078): PFAS Detected in Mapped Water Systems
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Stillwater Utilities Authority)
Health-based violation records by water system:
EPA records for the water systems mapped to 74078 in Stillwater, OK contain 10 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 9 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 9 health-based violations and 1 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0021 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
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The critical alert on record for 74078 in Stillwater stands alone - no high-priority findings appear in the same compiled data.
Score Breakdown
Overall Home Safety Score: Score unavailable
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Coverage: 3 of 4 components and 2 of 3 domains observed.
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Safety & Health (7) CRITICAL
Your Water System
ZIP code 74078 in Stillwater, Oklahoma is mapped to the water system Stillwater Utilities Authority (EPA ID: OK1021220). This system provides water to approximately 53,000 people from surface water sources.
There are 2 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Stillwater Utilities Authority | OK1021220 | 53,000 | Surface water |
| Osu Water Plant | OK1020910 | 13,000 | Surface water |
Other Water Quality Reports in Oklahoma
- 73001 (Albert)
- 73002 (Alex) - 39 violations recorded for mapped water systems
- 73003 (Edmond)
- 73004 (Amber) - 166 violations recorded for mapped water systems
- 73005 (Anadarko) - 102 violations recorded for mapped water systems
- 73006 (Apache) - 39 violations recorded for mapped water systems
- 73007 (Arcadia) - 30 violations recorded for mapped water systems
- 73008 (Bethany) - 7 violations recorded for mapped water systems
- 73009 (Binger) - 14 violations recorded for mapped water systems
- 73010 (Blanchard) - 677 violations recorded for mapped water systems
- 73011 (Bradley) - 105 violations recorded for mapped water systems
- 73012 (Edmond) - 8 violations recorded for mapped water systems
- 73013 (Edmond) - 8 violations recorded for mapped water systems
- 73014 (Calumet) - 90 violations recorded for mapped water systems
- 73015 (Carnegie) - 6 violations recorded for mapped water systems
- 73016 (Cashion) - 195 violations recorded for mapped water systems
- 73017 (Cement) - 109 violations recorded for mapped water systems
- 73018 (Chickasha) - 191 violations recorded for mapped water systems
- 73019 (Norman) - 3 violations recorded for mapped water systems
- 73020 (Choctaw) - 290 violations recorded for mapped water systems
Nearby Water Quality Reports
- 74077 (Stillwater) - <1 mi - 10 violations recorded for mapped water systems
- 74075 (Stillwater) - 1 mi - 32 violations recorded for mapped water systems
- 74074 (Stillwater) - 1 mi - 32 violations recorded for mapped water systems
- 74076 (Stillwater) - 4 mi
- 74059 (Perkins) - 10 mi - 67 violations recorded for mapped water systems
- 74032 (Glencoe) - 11 mi - 23 violations recorded for mapped water systems
- 73061 (Morrison) - 12 mi - 39 violations recorded for mapped water systems
- 74062 (Ripley) - 13 mi - 15 violations recorded for mapped water systems
- 73050 (Langston) - 16 mi
- 73077 (Perry) - 16 mi - 168 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Stillwater Utilities Authority (OK1021220) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 74078. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFBA, PFHxS, PFHxA, PFPeA, PFBS.
Highest measured level: 0.0086 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (9) MODERATE
Home & Infrastructure (7) MODERATE
Area data suggest possible HVAC concerns - talk to a local expert.
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Cost & Community (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Stillwater
Based on local data for ZIP 74078, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Roofing Inspection & Repair
Active weather alerts in Oklahoma increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 74078 safe to drink?
EPA SDWIS records 10 violations since 2021 across the water systems mapped to ZIP 74078 (primary system: Stillwater Utilities Authority), including 9 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 74078's water come from?
The recorded water source for Stillwater Utilities Authority, a system mapped to ZIP code 74078, is Surface water. This system serves approximately 53,000 people.
How can I get my water tested in Stillwater?
If Stillwater Utilities Authority supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 74078 tap water?
The Lead and Copper Rule record selected for 74078 reports a 90th-percentile lead result of 0.0021 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 74078?
74078 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Payne County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 74078's water?
Yes, PFAS have been detected in samples from water systems mapped to 74078. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Stillwater, OK (74078): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/74078/
@misc{zipcheckup-report-74078,
author = {{ZipCheckup}},
title = {{Stillwater, OK (74078): PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/74078/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 74078
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 74077 | Stillwater, OK | <1 mi | N/A | 10 |
| 74075 | Stillwater, OK | 1.1 mi | N/A | 32 |
| 74074 | Stillwater, OK | 1.5 mi | N/A | 32 |
| 74076 | Stillwater, OK | 3.7 mi | N/A | 0 |
| 74059 | Perkins, OK | 10.3 mi | N/A | 67 |
| 74032 | Glencoe, OK | 10.8 mi | N/A | 23 |
| 73061 | Morrison, OK | 11.8 mi | N/A | 39 |
| 74062 | Ripley, OK | 13.0 mi | N/A | 15 |
| 73050 | Langston, OK | 16.3 mi | N/A | 0 |
| 73077 | Perry, OK | 16.4 mi | N/A | 168 |
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