Dewar, OK: 5 Health Violations — 81/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Unlike many cities its size in OK, Dewar keeps health-based violation rates low — systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Dewar Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Dewar Water
- Your city's water systems recorded 10 violations in the past 5 years.
- Average lead level: 0.0006 mg/L.
- Homes built before 1986: 63% — older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 16.33 — above typical levels.
Who Supplies Your Water in Dewar
At present, 3 utilities serve the bulk of Dewar, OK's residential water connections out of 3 systems active in the area, spread across independent providers with separate infrastructure and compliance obligations.
Overview
We track water quality and home safety data for 1 ZIP code in Dewar, Oklahoma (population ~869), covering 3 community water systems serving approximately 4,720 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 5 health-based violations documented.
Home Safety Score
Average Home Safety Score for Dewar: B (81/100)
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
Dewar water systems draw from: Surface water.
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 |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 6 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Consumer Confidence Report Rule | Reporting | 4 | 1 |
| Revised Total Coliform Rule | Microbiological | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74431 | B | 10 | 5 | Okmulgee Company Rwd #4 |
All ZIP Codes in Dewar
- 74431 [B] — 10 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.
Health Outcomes in Dewar
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
Top Contaminants in Dewar Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Dewar
With 63% 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
Heavily weighted toward older construction, Dewar's housing stock carries a median build year of 1975. That profile puts a majority of homes in the era when lead-soldered copper plumbing was standard practice.
Over half of homes in Dewar were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Dewar Homeowners
In Dewar, the remediation-to-property-value ratio is elevated enough that homeowners who identify documented issues early have an advantage — understanding the scope, sequencing by urgency, and phasing the work against household budget capacity are the practical levers that determine whether remediation feels manageable or overwhelming at this equity tier.
At 2.1% of home value, remediation costs in Dewar represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $1,100–$3,300. Home values here are 41% below the Oklahoma average.
Lead Exposure Risk for Children in Dewar
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.
When older housing represents 63% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Dewar address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Dewar
Measured across the NFIP's multi-decade tracking period, Dewar shows a moderate flood record — 6 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Dewar has a moderate flood history with 6 FEMA claims averaging $19,729 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>$1,800</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 Dewar, OK