Blocker, OK Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Although much of Blocker meets baseline drinking water standards, some OK-tracked service areas show violations that merit a closer look — particularly for older housing stock.
How Blocker Compares
Data: EPA SDWIS Last verified: 2026-06-03
Who Supplies Your Water in Blocker
In Blocker, OK, the drinking water supply is organized under a single dominant utility — a consolidated structure that shapes how infrastructure investment, regulatory compliance, and rate decisions flow to households. When one provider handles the overwhelming share of residential connections out of 1 tracked system, accountability is clear: service upgrades, EPA violation responses, and tariff changes all funnel through that single organizational structure.
Overview
We track water quality and home safety data for 1 ZIP code in Blocker, Oklahoma, covering 1 community water system serving approximately 2,203 people.
No EPA violations recorded across any ZIP codes in Blocker — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Blocker: 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
Blocker water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Blocker
- 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 |
|---|---|---|---|
| 74529 | C | PITTSBURG CO. PWA (CROWDER) | 2,203 |
All ZIP Codes in Blocker
- 74529 [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.
Health Outcomes in Blocker
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 You Can Do in Blocker
- 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. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Blocker, OK