Tap Water Quality Report
Tap water quality in Glendale, Arizona
Tap water in Glendale, Arizona receives a grade of D (61/100) from TapWaterSafety.org. It's served by GLENDALE CITY OF. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Chromium (hexavalent) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Glendale's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Glendale.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 3.4 ppb, 849x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 24.7 ppb, 412x above the EWG health guideline of 0.06 ppb.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 6.44 ppb, 322x above the EWG health guideline of 0.02 ppb.
EPA compliance record
Official U.S. EPA records for GLENDALE CITY OF (system ID AZ0407093) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 01/01/2025 | Open |
| Surface Water Treatment Rule | Missed testing or reporting | 08/01/2023 | Open |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 01/01/2025 | 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 Glendale
Filters matched to the specific contaminants in Glendale'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 Glendale'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 |
3.4 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 849× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
24.7 ppb | 0.06 | — | — | — | — | — | 412× over |
| Chromium (hexavalent) Heavy metal |
6.44 ppb | 0.02 | — | — | — | — | — | 322× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
40.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 270× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
9.07 ppb | 0.1 | 60.0 | 60 | — | — | — | 91× over |
| Nitrate Inorganic |
2.45 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 17× over |
| Nitrate and nitrite Inorganic |
2.21 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 16× over |
| Chlorite Disinfection byproduct |
355.1 ppb | 50.0 | 1000.0 | — | — | — | — | 7.1× over |
| Uranium Radiological |
1.33 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.1× over |
| Radium, combined (-226 and -228) Radiological |
0.08 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.6× over |
| Vanadium Other |
9.39 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.0107 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
22.7 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
58.7 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
2.64 ppb | 40.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.016 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Manganese Heavy metal |
2.12 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
3.89 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.815 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
10.6 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.324 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.137 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
72.1 ppb | — | — | — | — | — | — | Below guideline |
| o-toluidine Other |
0.000268 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 GLENDALE CITY OF.