Owasso, OK: 1 Health Violation — 89/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
Tap water in Owasso, OK scores well — low violation counts, above-average safety grade.
How Owasso Compares
Data: EPA SDWIS Last verified: 2026-06-03
Owasso Water: The Quick Version
- Your city's water systems recorded 22 violations in the past 5 years.
- Average lead level: 0.0005 mg/L.
- Homes built before 1986: 28% — older plumbing may contain lead solder.
- Estimated remediation: $1,500 per household.
- CDC health risk index: 14 — above typical levels.
Water Systems Serving Owasso
Residential water service in Owasso, OK is divided among 3 separate utilities, drawn from 6 systems on file with federal regulators.
Overview
We track water quality and home safety data for 1 ZIP code in Owasso, Oklahoma (population ~49,895), covering 6 community water systems serving approximately 483,803 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Owasso: A (89/100)
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
Owasso water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0005 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)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 18 | 1 |
| Revised Total Coliform Rule | Microbiological | 12 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 6 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74055 | A | 22 | 1 | Owasso |
All ZIP Codes in Owasso
- 74055 [A] — 22 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.
CDC Health Data for Owasso
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
Key Contaminants Detected in Owasso
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Owasso's Housing Stock?
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
The year 1986 marks a critical threshold in residential plumbing safety: that's when the federal government banned lead solder from new construction, closing a major pathway for lead entering household drinking water via pipe joints. Owasso's median build year of 1991 signals that most of the city's housing was built under the newer standard. The distribution above tells the full story — the post-1986 majority lowers aggregate risk, but the pre-1986 share still deserves scrutiny from anyone living in or purchasing an older home.
Most homes in Owasso 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.
Owasso: Remediation Cost in Perspective
When estimated remediation is placed alongside median property values in Owasso, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in Owasso are relatively low compared to home values. The $950–$2,400 estimated range is a small fraction of median property value. Home values are 81% above the Oklahoma average.
Protecting Children from Lead in Owasso
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.
Despite citywide averages reading cleanly under the federal action threshold, the way utilities pull samples — from a representative subset rather than door-to-door — leaves room for individual buildings with older interior lines to behave differently than the aggregate suggests. With only 28% of Owasso stock predating the solder rule, that residual subset is small but real, and a draw-test kit gives the only direct read on what comes out of one faucet on a given morning.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Owasso
Owasso's flood exposure sits in the moderate range: 28 NFIP claims on record and 100% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
Owasso has a moderate flood history with 28 FEMA claims averaging $14,871 per payout. 100% 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>$1,500</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 Owasso, OK