Portland, OR 97201 · Utility tests 2013–2023
Portland’s tap water has 15 contaminants, 6 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
- 6of 15 found
- Linked to cancer
- 4above guideline
- In the SGS test program
- 6of 15 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: 30.6 ppb
Health guideline: 0.06 ppb
510×Removed by RO
Level found: 24.3 ppb
Health guideline: 0.1 ppb
243×Removed by RO
Level found: 22.5 ppb
Health guideline: 0.15 ppb
150×Removed by RO
Level found: 0.458 ppb
Health guideline: 0.004 ppb
115×Tested · >97.2%
Level found: 0.0362 ppb
Health guideline: 0.02 ppb
1.8×Tested · 98.6%
Level found: 318 ppb
Health guideline: 210 ppb
1.5×Tested · >99.8%
Level found: 0.092 ppm
Health guideline: 0.14 ppm
0.66×Tested · >99.9%
Level found: 0.092 ppm
Health guideline: 0.14 ppm
0.66×Removed by RO
Level found: 1.75 ppb
Health guideline: 150 ppb
0.01×Removed by RO
Level found: 5.05 ppb
Health guideline: 700 ppb
0.01×Tested · >99.9%
10 of 15 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 97201. 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 Portland’s water that were in that program.
- Arsenic>97.2%Maximum measured reduction
- Hexavalent chromium98.6%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.