Zip 97201 · Portland, OR · 1 water systems · EWG data 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 programme
- 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
Worst first. Contaminants Sans has no evidence for come last unless they are above their guideline. Levels are utility averages reported to EWG.
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 programme.
- 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.