Oakland, CA 94601 · Utility tests 2013–2023
Oakland’s tap water has 13 contaminants, 5 above health guidelines.
- Water quality score
- 6out of 10Fair
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
- 5of 13 found
- Linked to cancer
- 4above guideline
- In the SGS test program
- 3of 13 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: 0.06 ppb
603×Removed by RO
Level found: 43.7 ppb
Health guideline: 0.1 ppb
437×Removed by RO
Level found: 54.7 ppb
Health guideline: 0.15 ppb
364×Removed by RO
Level found: 0.9 ppb
Health guideline: 0.1 ppb
9.0×Removed by RO
Level found: 0.0509 ppb
Health guideline: 0.02 ppb
2.5×Tested · 98.6%
Level found: 171 ppb
Health guideline: 210 ppb
0.82×Tested · >99.8%
Level found: 10.6 ppb
Health guideline: 600 ppb
0.02×Removed by RO
Level found: 0.15 ppb
Health guideline: 40 ppb
0.00×Removed by RO
- PFAS
Level found: 0.49 ppt
Health guideline: 1,000 ppt
0.00×Removed by RO
Level found: 0.0948 ppb
Health guideline: 1,500 ppb
0.00×Removed by RO
10 of 13 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 94601. 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 Oakland’s water that were in that program.
- Hexavalent chromium98.6%Maximum measured reduction
- Chlorate>99.8%Maximum measured reduction
- Fluoride>99.9%Maximum measured reduction
Figures are the laboratory’s own, measured under test conditions. Your tap water differs from the challenge water.