San Diego, CA 92101 · Utility tests 2013–2023
San Diego’s tap water has 33 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 33 found
- Linked to cancer
- 12above guideline
- In the SGS test program
- 6of 33 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: 36.2 ppb
Health guideline: 0.1 ppb
362×Removed by RO
Level found: 18.1 ppb
Health guideline: 0.06 ppb
302×Removed by RO
Level found: 28.1 ppb
Health guideline: 0.15 ppb
188×Removed by RO
Level found: 7.58 ppb
Health guideline: 0.06 ppb
126×Removed by RO
Level found: 9.99 ppb
Health guideline: 0.1 ppb
100×Removed by RO
Level found: 2.73 ppb
Health guideline: 0.03 ppb
91×Removed by RO
Level found: 3.19 ppb
Health guideline: 0.2 ppb
16×Removed by RO
Level found: 1.38 ppb
Health guideline: 0.1 ppb
14×Removed by RO
Level found: 5.37 ppb
Health guideline: 0.4 ppb
13×Removed by RO
Level found: 5.18 ppb
Health guideline: 0.5 ppb
10×Removed by RO
10 of 33 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 92101. 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 Diego’s water that were in that program.
- Hexavalent chromium98.6%Maximum measured reduction
- Perfluorooctanoic acid>98.8%Maximum measured reduction
- Chlorate>99.8%Maximum measured reduction
Figures are the laboratory’s own, measured under test conditions. Your tap water differs from the challenge water.