Water Quality Report · Updated May 12, 2026
PHOENIX CITY OF
PHOENIX CITY OF delivers tap water graded D (59/100) by TapWaterSafety.org. The utility serves approximately 1,695,000 residents in PHOENIX, Arizona using surface water. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 602-256-5658.
Is PHOENIX tap water safe to drink?
PHOENIX CITY OF delivers tap water that earns a grade of D (59/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including arsenic significantly above health guideline.
The utility serves 1,695,000 residents in PHOENIX, drawing from surface water.
Public testing data identifies 8 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Chromium (hexavalent), Nitrate, Chlorite, Uranium. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for PHOENIX residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for PHOENIX CITY OF.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 4.1 ppb, 1026x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 19.0 ppb, 316x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 39.1 ppb, 260x above the EWG health guideline of 0.15 ppb.
Contact PHOENIX CITY OF
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for PHOENIX
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 59/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
4.1 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 1026× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
19.0 ppb | 0.06 | — | — | — | — | — | 316× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
39.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 260× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
11.6 ppb | 0.1 | 60.0 | 60 | — | — | — | 116× over |
| Chromium (hexavalent) Heavy metal |
0.408 ppb | 0.02 | — | — | — | — | — | 20× over |
| Nitrate Inorganic |
1.58 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 11× over |
| Chlorite Disinfection byproduct |
130.8 ppb | 50.0 | 1000.0 | — | — | — | — | 2.6× over |
| Uranium Radiological |
1.11 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 2.6× over |
| Radium, combined (-226 and -228) Radiological |
0.05 pCi/L | 0.05 | 5.0 | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
158.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
25.3 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
2.71 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
34.7 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Di(2-ethylhexyl) phthalate Semi-volatile organic compound |
0.0163 ppb | 3.0 | 6.0 | — | — | — | — | Below guideline |
| Vanadium Other |
0.0917 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
0.0984 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
2.64 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
0.596 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.642 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
10.3 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.507 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0679 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
70.2 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
PHOENIX CITY OF service area
This water system serves 1 community in Maricopa County, Arizona. Click any city for its dedicated tap water quality page.
Find the right filter for PHOENIX water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.