Radium in Oklahoma Drinking Water — 136 ZIPs Tested
EPA data analysis for radium in Oklahoma drinking water systems
Radium Contamination in Oklahoma
ZipCheckup analyzed drinking water data across 771 ZIP codes in Oklahoma for radium contamination. 136 ZIP codes have reported radium detections, and 5 have EPA violations on record.
The violation rate for radium in Oklahoma is 0.6% of all ZIP codes — lower than the national average.
EPA Standard for Radium
The EPA maximum contaminant level (MCL) for radium is 5 pCi/L (combined Ra-226 + Ra-228), governed by the Radionuclides Rule. Water systems that exceed this limit must take corrective action and notify consumers.
Worst ZIP Codes for Radium in Oklahoma
These ZIP codes reported the highest radium levels in Oklahoma based on CCR reports and EPA data:
Lowest Radium Levels in Oklahoma
These ZIP codes had the lowest reported radium detections in Oklahoma:
Health Effects of Radium
Radium is a radioactive element that increases cancer risk, particularly bone cancer. It accumulates in bones because the body treats it like calcium. The EPA estimates that drinking water with 5 pCi/L of radium over a lifetime poses a 1 in 10,000 cancer risk.
How to Remove Radium From Drinking Water
The most effective treatment for radium removal is Reverse Osmosis or Ion Exchange. Look for filters certified under NSF 58 standards.
Check Your ZIP Code
Use the ZipCheckup water quality search to see radium data for your specific water system in Oklahoma.
Worst ZIP Codes for Radium in Oklahoma
Ranked by highest radium detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 73006 | Apache | 25 µg/L | 30 µg/L | Within Limit |
| 2 | 74730 | Calera | 19.8 µg/L | 30 µg/L | Within Limit |
| 3 | 74369 | Welch | 8.6 pCi/L | 5 pCi/L | Exceeds |
| 4 | 74738 | Grant | 6.15 pCi/L | 5 pCi/L | Exceeds |
| 5 | 73084 | Spencer | 4.55 pCi/L | 5 pCi/L | Within Limit |
| 6 | 73110 | Oklahoma City | 4.55 pCi/L | 5 pCi/L | Within Limit |
| 7 | 73130 | Oklahoma City | 4.55 pCi/L | 5 pCi/L | Within Limit |
| 8 | 74030 | Drumright | 4.47 pCi/L | 5 pCi/L | Within Limit |
| 9 | 74068 | Shamrock | 4.47 pCi/L | 5 pCi/L | Within Limit |
| 10 | 73061 | Morrison | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 11 | 74020 | Cleveland | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 12 | 74032 | Glencoe | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 13 | 74045 | Maramec | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 14 | 74085 | Yale | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 15 | 74630 | Billings | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 16 | 74644 | Marland | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 17 | 74651 | Red Rock | 4.14 pCi/L | 5 pCi/L | Within Limit |
| 18 | 74034 | Hallett | 4.12 pCi/L | 5 pCi/L | Within Limit |
| 19 | 73078 | Piedmont | 3.8 pCi/L | 5 pCi/L | Within Limit |
| 20 | 73762 | Okarche | 3.8 pCi/L | 5 pCi/L | Within Limit |
Lowest Radium Levels in Oklahoma
Cities with Radium Data in Oklahoma
16 cities in Oklahoma have radium testing data available.