Hanna, OK: 2 Health Violations — 93/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
The water systems supplying Hanna show a track record of above-average compliance with federal standards — consistently among the better performers in OK.
How Hanna Compares
Data: EPA SDWIS Last verified: 2026-06-03
Hanna Water: The Quick Version
- Your city's water systems recorded 18 violations in the past 5 years.
- Average lead level: 0.0006 mg/L.
- Homes built before 1986: 45% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 18.13 — above typical levels.
Water Systems Serving Hanna
In Hanna, OK, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 3 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 1 ZIP code in Hanna, Oklahoma (population ~365), covering 3 community water systems serving approximately 2,069 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Hanna: A (93/100)
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
Hanna water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0006 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 |
|---|---|---|---|
| Total Coliform | Microbiological | 10 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 8 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 6 | 1 |
| Revised Total Coliform Rule | Microbiological | 6 | 1 |
| Contaminant 2105 | Other | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74845 | A | 18 | 2 | Mcintosh Company Rws & Swmd #9 |
All ZIP Codes in Hanna
- 74845 [A] — 18 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 Hanna
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 Hanna
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Hanna's Housing Stock?
With 45% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Prohibited from residential plumbing since 1986, lead solder divides Hanna's housing stock along a timeline that the median build year of 1999 straddles. A meaningful share of homes predates the ban — a configuration that places moderate aggregate pressure on plumbing-related lead risk, distributed unevenly across neighborhoods.
Most homes in Hanna 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.
Protecting Children from Lead in Hanna
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.
Practically, the structural drivers in Hanna — 45% pre-rule stock and citywide monitoring at or beyond the regulatory benchmark — make an in-home draw the practical way to translate aggregate averages into the specific conditions at one address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Hanna, OK