Oklahoma City, OK: 158 Violations — 90/100 (2026)
79 ZIP codes · 13 water systems · Updated 2026-06-03
Drinking water tracked for Oklahoma City by OK authorities posts above-average scores — the majority of systems are free from health-based exceedances and the city's grade sits above the state median.
How Oklahoma City Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Oklahoma City, OK
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Oklahoma City's 79 ZIP codes.
Key Facts for Oklahoma City Residents
- Your city's water systems recorded 158 violations in the past 5 years.
- Average lead level: 0.0041 mg/L.
- Estimated remediation: $1,525 per household.
- CDC health risk index: 13.21 — above typical levels.
Oklahoma City's Water Providers
With 3 utilities splitting service in Oklahoma City, OK, water accountability is distributed across 13 systems on the federal record.
Overview
We track water quality and home safety data for 79 ZIP codes in Oklahoma City, Oklahoma, covering 13 community water systems serving approximately 695,373 people.
79 of 79 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Oklahoma City: A (90/100)
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
Oklahoma City water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0041 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): 79 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 80 | 79 |
| Contaminant 4100 | Other | 80 | 79 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 73101 | A | 2 | 0 | Oklahoma City |
| 73102 | A | 2 | 0 | Oklahoma City |
| 73103 | A | 2 | 0 | Oklahoma City |
| 73104 | A | 2 | 0 | Oklahoma City |
| 73105 | A | 2 | 0 | Oklahoma City |
| 73106 | A | 2 | 0 | Oklahoma City |
| 73107 | A | 2 | 0 | Oklahoma City |
| 73108 | A | 2 | 0 | Oklahoma City |
| 73109 | B | 2 | 0 | Oklahoma City |
| 73110 | A | 2 | 0 | Spencer |
All ZIP Codes in Oklahoma City
- 73101 [A] — 2 violations
- 73102 [A] — 2 violations
- 73103 [A] — 2 violations
- 73104 [A] — 2 violations
- 73105 [A] — 2 violations
- 73106 [A] — 2 violations
- 73107 [A] — 2 violations
- 73108 [A] — 2 violations
- 73109 [B] — 2 violations
- 73110 [A] — 2 violations
- 73111 [A] — 2 violations
- 73112 [B] — 2 violations
- 73113 [A] — 2 violations
- 73114 [A] — 2 violations
- 73115 [B] — 2 violations
- 73116 [B] — 2 violations
- 73117 [A] — 2 violations
- 73118 [B] — 2 violations
- 73119 [B] — 2 violations
- 73120 [B] — 2 violations
- 73121 [A] — 2 violations
- 73122 [A] — 2 violations
- 73123 [A] — 2 violations
- 73124 [A] — 2 violations
- 73125 [A] — 2 violations
- 73126 [A] — 2 violations
- 73127 [B] — 2 violations
- 73128 [A] — 2 violations
- 73129 [A] — 2 violations
- 73130 [A] — 2 violations
- 73131 [A] — 2 violations
- 73132 [B] — 2 violations
- 73134 [A] — 2 violations
- 73135 [A] — 2 violations
- 73136 [A] — 2 violations
- 73137 [A] — 2 violations
- 73139 [B] — 2 violations
- 73140 [A] — 2 violations
- 73141 [B] — 2 violations
- 73142 [A] — 2 violations
- 73143 [A] — 2 violations
- 73144 [A] — 2 violations
- 73145 [A] — 2 violations
- 73146 [A] — 2 violations
- 73147 [A] — 2 violations
- 73148 [A] — 2 violations
- 73149 [A] — 2 violations
- 73150 [A] — 2 violations
- 73151 [A] — 2 violations
- 73152 [A] — 2 violations
- 73153 [A] — 2 violations
- 73154 [A] — 2 violations
- 73155 [A] — 2 violations
- 73156 [A] — 2 violations
- 73157 [A] — 2 violations
- 73159 [B] — 2 violations
- 73160 [A] — 2 violations
- 73162 [A] — 2 violations
- 73163 [A] — 2 violations
- 73164 [A] — 2 violations
- 73165 [A] — 2 violations
- 73167 [A] — 2 violations
- 73169 [A] — 2 violations
- 73170 [A] — 2 violations
- 73172 [A] — 2 violations
- 73173 [A] — 2 violations
- 73178 [A] — 2 violations
- 73179 [A] — 2 violations
- 73184 [A] — 2 violations
- 73185 [A] — 2 violations
- 73189 [A] — 2 violations
- 73190 [A] — 2 violations
- 73193 [A] — 2 violations
- 73194 [A] — 2 violations
- 73195 [A] — 2 violations
- 73196 [A] — 2 violations
- 73197 [A] — 2 violations
- 73198 [A] — 2 violations
- 73199 [A] — 2 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.
Oklahoma City 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 Oklahoma City's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Oklahoma City
What does remediation cost in financial context for Oklahoma City homeowners? Proportionally very little — the equity share here is low, and addressing documented issues is a manageable planning question rather than a material financial burden.
Remediation costs in Oklahoma City are relatively low compared to home values. The $990–$2,320 estimated range is a small fraction of median property value. Home values are 35% above the Oklahoma average.
Oklahoma City: 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.
Lead risk in Oklahoma City appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Oklahoma City: Flood History & Water Damage Risk
Flood claims in Oklahoma City number 1610 under the NFIP, and 58% of ZIP codes fall within FEMA-designated zones — together reflecting a community where flooding is a recurring, significant feature of the local risk environment with direct implications for periodic water supply safety.
Oklahoma City has a significant flood history with 1,610 FEMA flood insurance claims on record, averaging $13,850 per claim. With 58% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
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>$1,525</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 Oklahoma City, OK