Wann, OK Water Safety: 66/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Wann, OK: mid-range safety grade, uneven compliance across service areas.
How Wann Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Wann Residents
- Homes built before 1986: 47% — older plumbing may contain lead solder.
- CDC health risk index: 16.13 — above typical levels.
Wann's Water Providers
Water supply in Wann, OK follows a divided structure: 3 utilities account for the largest share of residential service out of 4 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
Overview
We track water quality and home safety data for 1 ZIP code in Wann, Oklahoma (population ~773), covering 4 community water systems serving approximately 5,623 people region-wide.
No EPA violations recorded across any ZIP codes in Wann — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Wann: C (66/100)
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
Wann water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Wann
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 74083 | C | Dewey Public Works Authority | 3,490 |
All ZIP Codes in Wann
- 74083 [C]
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.
Wann 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
Wann Infrastructure Age
With 47% 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
Development in Wann unfolded across multiple decades, and the median build year of 1999 reflects a housing inventory where eras of construction are genuinely mixed — including portions that predate the federal prohibition on lead solder in plumbing.
Most homes in Wann 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.
Wann: 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.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 47% of Wann stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Wann
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 47% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Wann, OK