Zip 19019 · Philadelphia, PA · 2 water systems · EWG data 2013–2023

Philadelphia’s tap water has 46 contaminants, 20 above health guidelines.

Water quality score: 3out 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: 20of 46 found

Linked to cancer: 14above guideline

In the SGS test programme: 9of 46 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.

Times the health guideline, on a log scale

Within guideline
Up to 10×
10 to 100×
100 to 1,000×
Over 1,000×

ContaminantLevel foundHealth guidelineTimes the guidelineSans purifier

- PFAS
  Level found: 1.15 ppt
  Health guideline: 0.001 ppt
  1,152×
  Removed by RO
- Level found: 36.9 ppb
  Health guideline: 0.06 ppb
  615×
  Removed by RO
- Level found: 34.7 ppb
  Health guideline: 0.1 ppb
  347×
  Removed by RO
- Level found: 42.3 ppb
  Health guideline: 0.15 ppb
  282×
  Removed by RO
- Level found: 0.866 ppb
  Health guideline: 0.004 ppb
  216×
  Tested · >97.2%
- Level found: 20 ppb
  Health guideline: 0.1 ppb
  200×
  Removed by RO
- Level found: 10 ppb
  Health guideline: 0.06 ppb
  167×
  Removed by RO
- PFAS
  Level found: 0.9 ppt
  Health guideline: 0.006 ppt
  150×
  Removed by RO
- Level found: 29.7 ppb
  Health guideline: 0.4 ppb
  74×
  Removed by RO
- Level found: 14.2 ppb
  Health guideline: 0.2 ppb
  71×
  Removed by RO

10 of 46 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

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 Philadelphia’s water that were in that programme.

Shop Water Purifier Read the lab report

Arsenic
>97.2%Maximum measured reduction
Perfluorooctanoic acid
>98.8%Maximum measured reduction
Nitrate
>99.9%Maximum measured reduction

Figures are the laboratory’s own, measured under test conditions. Your tap water differs from the challenge water.