Zip 73101 · Oklahoma City, OK · 45 water systems · EWG data 2013–2023
Oklahoma City’s tap water has 50 contaminants, 25 above health guidelines.
- Water quality score
- 2out of 10Poor
Counts contaminants above an EWG health guideline, weighted by the harm the guideline protects against. 8 and above is good; 5 and above is fair.
- Above a health guideline
- 25of 50 found
- Linked to cancer
- 17above guideline
- In the SGS test programme
- 10of 50 found
Contaminants found here that SGS measured the Sans Water Purifier against.
Water data: EWG Tap Water Database, utility test results 2013–2023. Guidelines are EWG health guidelines set by federal or state public-health authorities; legal limits differ.
What’s in the water
Worst first. Contaminants Sans has no evidence for come last unless they are above their guideline. Levels are utility averages reported to EWG.
- PFAS
Level found: 3.3 ppt
Health guideline: 0.001 ppt
3,300×Removed by RO
Level found: 8 ppb
Health guideline: 0.004 ppb
2,000×Tested · >97.2%
Level found: 62.9 ppb
Health guideline: 0.06 ppb
1,048×Removed by RO
Level found: 15.1 ppb
Health guideline: 0.02 ppb
757×Tested · 98.6%
Level found: 54.7 ppb
Health guideline: 0.15 ppb
365×Removed by RO
Level found: 30.5 ppb
Health guideline: 0.1 ppb
305×Removed by RO
Level found: 13.3 ppb
Health guideline: 0.06 ppb
222×Removed by RO
Level found: 17.2 ppb
Health guideline: 0.1 ppb
172×Removed by RO
Level found: 4.73 ppb
Health guideline: 0.03 ppb
158×Removed by RO
Level found: 12.7 ppb
Health guideline: 0.1 ppb
127×Removed by RO
10 of 50 contaminants
Tested: measured by SGS on the Sans Water Purifier, the lab’s own figure. Removed by RO: listed by EWG as reduced by reverse osmosis, the purifier’s filter type. Not tested: neither.
Where this report applies
Utilities serving zip 73101. Map data © OpenStreetMap contributors.
What the Sans Water Purifier is tested to reduce
SGS, an ISO/IEC 17025 laboratory, measured the purifier’s reduction of 19 contaminants (Dec 2023 to Mar 2024). These are the worst in Oklahoma City’s water that were in that programme.
- Arsenic>97.2%Maximum measured reduction
- Hexavalent chromium98.6%Maximum measured reduction
- Nitrate>99.9%Maximum measured reduction
Figures are the laboratory’s own, measured under test conditions. Your tap water differs from the challenge water.