Quapaw, OK: 2 Health Violations — 79/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Although water quality varies across any metro, Quapaw's systems collectively post above-average compliance scores for OK — and documented violations are few.
How Quapaw Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Quapaw Residents
- Your city's water systems recorded 31 violations in the past 5 years.
- Homes built before 1986: 56% — older plumbing may contain lead solder.
- Estimated remediation: $1,500 per household.
- CDC health risk index: 16.17 — above typical levels.
Quapaw's Water Providers
3 independent water providers serve Quapaw, OK — 4 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Quapaw, Oklahoma, covering 4 community water systems serving approximately 2,646 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Quapaw: B (79/100)
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
Quapaw water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Quapaw
- 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 |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 16 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 10 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 8 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 8 | 1 |
| Revised Total Coliform Rule | Microbiological | 8 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74363 | B | 31 | 2 | Ottawa Company Rwd #5 |
All ZIP Codes in Quapaw
- 74363 [B] — 31 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.
Quapaw 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 Quapaw's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Quapaw Infrastructure Age
With 56% 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
When a city's housing median build year is 1987, as in Quapaw, the implication for water quality research is straightforward: municipal-level data captures what leaves the treatment plant, but household plumbing from before 1986 determines what actually arrives at the tap. In cities where older housing predominates, that gap between system-level and household-level data is widest.
Over half of homes in Quapaw 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.
How Remediation Costs Compare in Quapaw
Viewed from a financial planning lens, Quapaw sits in the moderate remediation-share tier — the equity impact of addressing documented issues is real, and deliberate preparation separates smooth outcomes from disruptive ones for most homeowners.
Remediation costs are moderate relative to home values in Quapaw. The estimated $950–$2,400 range is manageable for most homeowners but still worth budgeting for. Home values are 22% below the Oklahoma average.
Quapaw: 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.
Even where utility-side monitoring meets Lead and Copper Rule requirements, the 56% pre-rule share in Quapaw keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Quapaw: Flood History & Water Damage Risk
The National Flood Insurance Program captures decades of claims at the local level, building a record of cumulative community flood exposure. For Quapaw, that record documents 7 claims and 100% of ZIP codes inside FEMA-designated flood zones. What makes those numbers relevant to water quality is the set of mechanisms flooding activates: heavy precipitation that floods treatment intake zones can introduce contaminants upstream of normal filtration; well casings in low-lying areas can be infiltrated by floodwaters carrying bacteria, sediment, and chemical residue; and distribution system pressure changes during flooding can create backflow conditions. These effects become more probable as flood frequency and magnitude increase — and the NFIP record indicates both are meaningful factors locally.
Quapaw has a moderate flood history with 7 FEMA claims averaging $18,495 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>$1,500</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 Quapaw, OK