San Antonio, TX 78201 · Utility tests 2013–2023
San Antonio’s tap water has 38 contaminants, 15 above health guidelines.
- Water quality score
- 4out 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
- 15of 38 found
- Linked to cancer
- 12above guideline
- In the SGS test program
- 7of 38 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
Level found: 9.67 ppb
Health guideline: 0.06 ppb
161×Removed by RO
Level found: 22.9 ppb
Health guideline: 0.15 ppb
152×Removed by RO
Level found: 2.12 ppb
Health guideline: 0.02 ppb
106×Removed by RO
Level found: 2.41 ppb
Health guideline: 0.03 ppb
80×Removed by RO
Level found: 4.42 ppb
Health guideline: 0.06 ppb
74×Removed by RO
Level found: 5.76 ppb
Health guideline: 0.1 ppb
58×Removed by RO
Level found: 5.55 ppb
Health guideline: 0.1 ppb
55×Removed by RO
Level found: 2.01 ppm
Health guideline: 0.14 ppm
14×Removed by RO
Level found: 2.05 ppb
Health guideline: 0.2 ppb
10×Removed by RO
Level found: 1.42 ppm
Health guideline: 0.14 ppm
10×Tested · >99.9%
10 of 38 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 78201. 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 San Antonio’s water that were in that program.
- Nitrate>99.9%Maximum measured reduction
- Hexavalent chromium98.6%Maximum measured reduction
- Barium>99.9%Maximum measured reduction
Figures are the laboratory’s own, measured under test conditions. Your tap water differs from the challenge water.