Stillwater, OK: 40 Health Violations — 73/100 (2026)
5 ZIP codes · 7 water systems · Updated 2026-06-03
For households in Stillwater, OK water data shows a consistently above-average safety picture.
How Stillwater Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Stillwater, OK
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Stillwater's 5 ZIP codes.
Key Facts for Stillwater Residents
- Your city's water systems recorded 50 violations in the past 5 years.
- Average lead level: 0.0021 mg/L.
- Homes built before 1986: 34% — older plumbing may contain lead solder.
- Estimated remediation: $1,540 per household.
- CDC health risk index: 11.88.
Stillwater's Water Providers
At present, 3 utilities serve the bulk of Stillwater, OK's residential water connections out of 7 systems active in the area, spread across independent providers with separate infrastructure and compliance obligations.
Overview
We track water quality and home safety data for 5 ZIP codes in Stillwater, Oklahoma, covering 7 community water systems serving approximately 60,676 people.
5 of 5 ZIP codes (100%) have recorded EPA violations. 40 health-based violations documented.
Home Safety Score
Average Home Safety Score for Stillwater: B (73/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Stillwater water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0021 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 5 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Chlorite | Disinfection Byproducts | 24 | 5 |
| E. coli | Microbiological | 18 | 5 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 12 | 5 |
| Contaminant 1052 | Other | 6 | 5 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74074 | B | 10 | 8 | Stillwater Utilities Authority |
| 74075 | B | 10 | 8 | Stillwater Utilities Authority |
| 74076 | B | 10 | 8 | Stillwater Utilities Authority |
| 74077 | B | 10 | 8 | Stillwater Utilities Authority |
| 74078 | B | 10 | 8 | Stillwater Utilities Authority |
All ZIP Codes in Stillwater
- 74074 [B] — 10 violations ⚠
- 74075 [B] — 10 violations ⚠
- 74076 [B] — 10 violations ⚠
- 74077 [B] — 10 violations ⚠
- 74078 [B] — 10 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Stillwater Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Stillwater's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Stillwater Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Plumbing risk in residential housing tracks directly to construction era: pre-1986 homes may have lead-soldered copper joints; pre-1970 homes may have lead pipes outright. Stillwater's median build year of 1993 places the city in a moderate risk zone where neither era dominates the housing inventory. Understanding which side of the 1986 threshold a specific property falls on — and whether it predates 1970 — is the most actionable starting point for a homeowner trying to assess their own tap water exposure.
Most homes in Stillwater were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Stillwater
For most homeowners in Stillwater, the estimated cost of water and safety remediation represents a proportionally modest share of what properties are worth — placing this area in the lower tier of the remediation share scale.
Remediation costs in Stillwater are relatively low compared to home values. The $920–$2,900 estimated range is a small fraction of median property value. Home values are 71% above the Oklahoma average.
Stillwater: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
When older housing represents 34% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Stillwater address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Stillwater: Flood History & Water Damage Risk
Within the NFIP's national dataset, Stillwater falls in moderate-exposure territory — 87 documented incidents spanning multiple decades, with 60% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Stillwater has a moderate flood history with 87 FEMA claims averaging $7,947 per payout. 60% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,540</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Stillwater, OK