Tap Water Quality Report
Tap water quality in Chandler, Arizona
Tap water in Chandler, Arizona receives a grade of D (61/100) from TapWaterSafety.org. It's served by CHANDLER CITY OF. 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. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Chandler's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Chandler.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 5.2 ppb, 1300x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 35.8 ppb, 596x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 47.3 ppb, 315x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for CHANDLER CITY OF (system ID AZ0407090) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Arsenic Rule | Missed testing or reporting | 04/01/2023 | Open |
| Volatile Organic Chemicals | Missed testing or reporting | 01/01/2023 | Open |
| Inorganic Chemicals | Missed testing or reporting | 01/01/2015 | Open |
| Nitrate Rule | Missed testing or reporting | 04/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for Chandler
Filters matched to the specific contaminants in Chandler's water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in Chandler's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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 |
5.2 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 1300× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
35.8 ppb | 0.06 | — | — | — | — | — | 596× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
47.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 315× over |
| Chromium (hexavalent) Heavy metal |
5.21 ppb | 0.02 | — | — | — | — | — | 261× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
10.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 109× over |
| Nitrate Inorganic |
3.34 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 24× over |
| Nitrate and nitrite Inorganic |
3.16 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 23× over |
| Uranium Radiological |
1.89 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 4.4× over |
| Radium, combined (-226 and -228) Radiological |
0.05 pCi/L | 0.05 | 5.0 | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
89.7 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
5.42 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
82.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Thallium Heavy metal |
0.0106 ppb | 0.1 | 2.0 | — | — | — | — | Below guideline |
| Cadmium Heavy metal |
0.00287 ppb | 0.04 | 5.0 | 5 | 3 | 0.04 | — | Below guideline |
| Molybdenum Other |
2.58 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
4.18 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Selenium Heavy metal |
0.757 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.00522 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Trichloroethylene Volatile organic compound |
0.00521 ppb | 0.4 | 5.0 | 10 | 20 | 1.7 | — | Below guideline |
| Dichloromethane (methylene chloride) Volatile organic compound |
0.00455 ppb | 4.0 | 5.0 | — | — | — | — | Below guideline |
| Strontium Radiological |
0.995 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.16 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.00424 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| Cobalt Other |
0.0141 ppb | 70.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.16 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
0.096 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.067 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
10.4 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Cyanide Inorganic |
1.15 ppb | — | 200.0 | 50 | 70 | 150 | — | Below guideline |
| Fluoride Inorganic |
0.499 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.314 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
189.4 ppb | — | — | — | — | — | — | Below guideline |
| Nitrite Inorganic |
0.00315 ppm | — | 1.0 | — | — | — | — | Below guideline |
| o-toluidine Other |
0.00052 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from CHANDLER CITY OF.