ZipCheckup grade for 74366: C.
A mixed picture - some signals here are worth your attention.
Your top priority: match a filter's certification to the violations (16 health-based violations). Check your ZIP → NSF certified filters
Spavinaw, OK (74366): 16 Health-Based Violations Recorded for Mapped Water Systems - 67/100
EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: Mayes Company Rwd # 9)
Health-based violation records by water system:
EPA records for the water systems mapped to 74366 in Spavinaw, OK contain 150 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 16 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 16 health-based violations and 134 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 2 - county-level radon potential, not a home measurement.
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One critical finding sits on record for Spavinaw (74366), unaccompanied by high-priority items.
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
Required domains
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 74366 in Spavinaw, Oklahoma is mapped to the water system Mayes Company Rwd # 9 (EPA ID: OK1021678). This system provides water to approximately 2,578 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 |
|---|---|---|---|
| Mayes Company Rwd # 9 | OK1021678 | 2,578 | Surface water |
| Salina Pwa | OK1021603 | 1,422 | Surface water |
| Mayes Company Rwd # 6 | OK1021666 | 3,750 | Surface water |
| Langley | OK1021604 | 950 | Surface water |
| Mayes Company Rwd # 3 | OK1021640 | 2,400 | 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
- 74367 (Strang) - 2 mi - 59 violations recorded for mapped water systems
- 74350 (Langley) - 5 mi - 94 violations recorded for mapped water systems
- 74340 (Disney) - 6 mi - 26 violations recorded for mapped water systems
- 74365 (Salina) - 7 mi - 193 violations recorded for mapped water systems
- 74342 (Eucha) - 7 mi - 85 violations recorded for mapped water systems
- 74349 (Ketchum) - 9 mi - 101 violations recorded for mapped water systems
- 74362 (Pryor) - 12 mi
- 74330 (Adair) - 13 mi - 43 violations recorded for mapped water systems
- 74332 (Big Cabin) - 14 mi - 75 violations recorded for mapped water systems
- 74364 (Rose) - 14 mi - 198 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 Mayes Company Rwd # 9 (OK1021678) 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
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 74366 show no PFAS detections among the compounds tested, at the program's reporting levels.
The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.
Environmental Hazards (10) HIGH
Home & Infrastructure (6) OK
Cost & Community (8) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Spavinaw
Based on local data for ZIP 74366, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Gutter Installation & Repair
The median home in 74366 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 CostsWindow Replacement
The median build year of homes in Spavinaw 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 CostsRoofing 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 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 74366 safe to drink?
EPA SDWIS records 150 violations since 2021 across the water systems mapped to ZIP 74366 (primary system: Mayes Company Rwd # 9), including 16 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 74366's water come from?
The recorded water source for Mayes Company Rwd # 9, a system mapped to ZIP code 74366, is Surface water. This system serves approximately 2,578 people.
How does Spavinaw water compare to the national average?
Spavinaw'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 Spavinaw?
If Mayes Company Rwd # 9 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 74366 tap water?
The Lead and Copper Rule record selected for 74366 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2026-06-30). 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 74366?
74366 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Mayes County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
How to cite this page
ZipCheckup. (2026). Spavinaw, OK (74366): 16 Health-Based Violations Recorded for Mapped Water Systems - 67/100. https://zipcheckup.com/report/74366/
@misc{zipcheckup-report-74366,
author = {{ZipCheckup}},
title = {{Spavinaw, OK (74366): 16 Health-Based Violations Recorded for Mapped Water Systems - 67/100}},
year = {2026},
url = {https://zipcheckup.com/report/74366/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 74366
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 74367 | Strang, OK | 2.3 mi | B | 59 |
| 74350 | Langley, OK | 5.1 mi | C | 94 |
| 74340 | Disney, OK | 6.0 mi | N/A | 26 |
| 74365 | Salina, OK | 6.7 mi | D | 193 |
| 74342 | Eucha, OK | 7.4 mi | N/A | 85 |
| 74349 | Ketchum, OK | 9.3 mi | N/A | 101 |
| 74362 | Pryor, OK | 11.9 mi | N/A | 0 |
| 74330 | Adair, OK | 12.7 mi | B | 43 |
| 74332 | Big Cabin, OK | 14.0 mi | C | 75 |
| 74364 | Rose, OK | 14.3 mi | N/A | 198 |
Nearby ZIP Code Reports
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