ZipCheckup grade for 74604: C.

A mixed picture - some signals here are worth your attention.

Your top priority: match a filter's certification to the violations (55 health-based violations). Check your ZIP → NSF certified filters

Health Violations Found
C 67

Ponca City, OK (74604): PFAS Detected in Mapped Water Systems - 67/100

EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: Kay Company Rwd #3)

Health Violations Found PFAS Detected

Health-based violation records by water system:

EPA records for the water systems mapped to 74604 in Ponca City, OK contain 210 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 55 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
C 67/100
Water Quality PFAS above MCL 55 health-based violation records
Lead Risk Below action level 0.001 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History Claim records 47 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 55 health-based violations and 155 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.001 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.
  • Flood 47 cumulative NFIP claim records. Check the current FEMA map for a specific address.
Contaminant Summary
Health Violations
210 violations 55 health-based PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
C
ZIP-level Home Safety model score: 67 / 100
Bottom 35% of U.S. ZIP codes
8
Water Systems
1,000
People Served
55
Health Violations (since 2021)Median is 0
Surface water
Water Source
0.001 mg/L
Reported Lead ResultBelow the national median of system results
Zone 3
County Radon Potential · Low
$198K
Median Home Value54% above state median ($129K)

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Score Breakdown

Overall Home Safety Score: 67/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
0/100
Observed
PFAS MCL screen
0/100
Observed
EPA radon zone
100/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
0/100
Indoor environment
100/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (6) CRITICAL

Your Water System

ZIP code 74604 in Ponca City, Oklahoma is mapped to the water system Kay Company Rwd #3 (EPA ID: OK3003602). This system provides water to approximately 1,000 people from surface water sources.

There are 8 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Kay Company Rwd #3 OK3003602 1,000 Surface water
Kay Company Rwd #1 OK3003605 1,765 Surface water
Mccord Rwd #3 OK3005747 1,800 Surface water
Ponca City Mun Water OK1021202 27,155 Surface water
Osage Company Rws & Swd #3 (braden) OK3005748 700 Surface water

Other Water Quality Reports in Oklahoma

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Kay Company Rwd #3 (OK3003602) on EPA.gov.

5 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.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 74604. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.

Detected compounds: PFOS, PFHxS, PFBA, PFBS, 9Cl-PF3ONS.

Highest measured level: 0.023 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.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) MODERATE

Possible home maintenance concerns - talk to a local expert.

Call (855) 384-4856

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Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Ponca City

Based on local data for ZIP 74604, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Ponca City has 47 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Gutter Installation & Repair

The median home in 74604 was built around 1973. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Window Replacement

The median build year of homes in Ponca City is 1973; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.

Typical cost: Window replacement: typically $300–$800 per window installed

Estimate Your Home Maintenance Costs

Roofing Inspection & Repair

Homes built around 1973 may be on their second or third roof. A professional inspection can catch damage before leaks start.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service 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 74604 safe to drink?

EPA SDWIS records 210 violations since 2021 across the water systems mapped to ZIP 74604 (primary system: Kay Company Rwd #3), including 55 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 74604's water come from?

The recorded water source for Kay Company Rwd #3, a system mapped to ZIP code 74604, is Surface water. This system serves approximately 1,000 people.

How does Ponca City water compare to the national average?

Ponca City's Home Safety Score ranks lower than 65% of U.S. ZIP codes, and lower than 97% of ZIP codes within Oklahoma.

How can I get my water tested in Ponca City?

If Kay Company Rwd #3 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 74604 tap water?

The Lead and Copper Rule record selected for 74604 reports a 90th-percentile lead result of 0.001 mg/L for a water system mapped to this ZIP (record date 2023-12-31). 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 74604?

74604 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Osage 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 74604's water?

Yes, PFAS have been detected in samples from water systems mapped to 74604. 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.

What does the NFIP claim history show for ZIP 74604?

FEMA records contain 47 flood insurance claims filed in ZIP code 74604; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Ponca City, OK (74604): PFAS Detected in Mapped Water Systems - 67/100. https://zipcheckup.com/report/74604/
BibTeX 
@misc{zipcheckup-report-74604,
  author = {{ZipCheckup}},
  title  = {{Ponca City, OK (74604): PFAS Detected in Mapped Water Systems - 67/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/74604/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 74604

ZIP Code City, State Distance Grade Violations
74601 Ponca City, OK 2.6 mi C 30
74602 Ponca City, OK 5.6 mi N/A 0
74647 Newkirk, OK 7.6 mi N/A 146
74641 Kaw City, OK 11.7 mi N/A 22
74644 Marland, OK 13.1 mi N/A 14
74631 Blackwell, OK 14.2 mi A 23
74633 Burbank, OK 14.5 mi A 1
74653 Tonkawa, OK 14.8 mi N/A 10
74651 Red Rock, OK 18.8 mi N/A 16
74632 Braman, OK 20.2 mi N/A 3

Contaminants Detected in 74604

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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