Norman, OK: PFAS Found in Water - Home Safety 89/100
6 ZIP codes · 7 water systems · Updated
ZipCheckup grade for Norman: A.
The model grade is high, but the records on this page include findings worth reviewing.
Your top priority: match a filter's certification to the violations (12 health-based violations). NSF certified filters →
Norman, OK: a top-two-band grade.
How Norman Compares
Data: EPA SDWIS
Water Quality Map: Norman, OK
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Norman score across all safety grades.
What You Should Know About Norman Water
- Your city's water systems recorded 150 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0042 mg/L.
- Homes built before 1986: 48% - older plumbing may contain lead solder.
- Estimated remediation: $917 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.44.
Who Supplies Your Water in Norman
Counting every public water system linked to Norman, OK in federal data gives 7. The list below keeps the 3 largest by reported population served, a figure that covers each system's whole service area rather than the city alone. A household's own supplier is named on its water bill.
- A
- B
- B
Overview
We track home safety data for 6 ZIP codes in Norman, Oklahoma (population ~133,176), covering 7 community water systems serving approximately 819,886 people region-wide. The EPA snapshots used for this build directly map water systems to 6 of 6 ZIP codes.
6 of 6 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Norman: A (89/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Norman water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0042 mg/L (EPA action level: 0.015 mg/L)
- 1 of 6 ZIP codes with known status exceed the EPA lead action level
Radon Risk
6 of 6 ZIP records with known zones are in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 44 | 2 |
| Lead and Copper Rule Revisions | Treatment Technique | 26 | 6 |
| Arsenic | Inorganic | 12 | 3 |
| Di(2-ethylhexyl) phthalate | Organic | 11 | 6 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 8 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 73072 | B | 87 | 9 | Norman Utilities Authority |
| 73026 | B | 66 | 4 | Norman Utilities Authority |
| 73069 | A | 62 | 5 | Norman Utilities Authority |
| 73071 | A | 62 | 5 | Norman Utilities Authority |
| 73019 | A | 3 | 1 | Norman Utilities Authority |
| 73070 | A | 3 | 1 | Norman Utilities Authority |
All ZIP Codes in Norman
- 73019 [A] - 3 violations ⚠
- 73026 [B] - 66 violations ⚠
- 73069 [A] - 62 violations ⚠
- 73070 [A] - 3 violations ⚠
- 73071 [A] - 62 violations ⚠
- 73072 [B] - 87 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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Norman
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Norman Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Norman
With 48% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
A citywide median of 1993 for construction says little about any single address in Norman. Homes built before 1986, when federal amendments restricted the lead content allowed in new pipe, solder and flux, may contain plumbing materials with more lead, and later renovations may have replaced them. An inspection of the plumbing can identify the materials, and sending a tap water sample to an accredited laboratory measures lead.
Most homes in Norman were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Norman Homeowners
Here the gap between local home values and the estimated repair bill is wide, so the percentage shown below for Norman stays at or under the 1% mark.
Estimated remediation costs in Norman can be compared with local home values. The $500–$1,867 estimated range can be set against the median property value; actual costs vary by home. Home values are 84% above the Oklahoma average.
Lead Exposure Risk for Children in Norman
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
1 ZIP code (17% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Norman
Historical NFIP data for Norman contains 197 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $24,137. Among ZIP codes with claim records, 40% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The $917 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Norman, OK