Zip 85001 · Phoenix, AZ · 104 water systems · EWG data 2013–2023

Phoenix’s tap water has 62 contaminants, 25 above health guidelines.

Water quality score: 2out 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: 25of 62 found

Linked to cancer: 18above guideline

In the SGS test programme: 11of 62 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: 6.93 ppt
  Health guideline: 0.001 ppt
  6,929×
  Removed by RO
- Level found: 9.28 ppb
  Health guideline: 0.004 ppb
  2,319×
  Tested · >97.2%
- Level found: 29 ppb
  Health guideline: 0.02 ppb
  1,450×
  Tested · 98.6%
- Level found: 35.8 ppb
  Health guideline: 0.06 ppb
  596×
  Removed by RO
- Level found: 61.7 ppb
  Health guideline: 0.15 ppb
  411×
  Removed by RO
- Level found: 19.4 ppb
  Health guideline: 0.06 ppb
  324×
  Removed by RO
- Level found: 18.2 ppb
  Health guideline: 0.1 ppb
  182×
  Removed by RO
- Level found: 17.2 ppb
  Health guideline: 0.1 ppb
  172×
  Removed by RO
- Level found: 0.034 ppt
  Health guideline: 0.0002 ppt
  170×
  Removed by RO
- PFAS
  Level found: 0.593 ppt
  Health guideline: 0.006 ppt
  99×
  Removed by RO

10 of 62 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 Phoenix’s water that were in that programme.

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Arsenic
>97.2%Maximum measured reduction
Hexavalent chromium
98.6%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.