Blocker, OK Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-07-16
ZipCheckup grade for Blocker: C.
A mixed picture - some signals here are worth your attention.
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: 2026-07-16
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.
- C
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 are recorded for the tracked water systems in Blocker as of the latest reporting period.
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