Tap Water Quality Report
Tap water quality in PEORIA, Arizona
Tap water in PEORIA, Arizona receives a grade of F (57/100) from TapWaterSafety.org. It's served by PEORIA 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 PEORIA's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving PEORIA.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 4.78 ppb, 1194x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 26.8 ppb, 446x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 41.3 ppb, 275x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for PEORIA CITY OF (system ID AZ0407096) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Long Term 2 Enhanced Surface Water Treatment Rule | Missed testing or reporting | 10/01/2024 | Open |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 03/01/2025 | Open |
| Lead and Copper Rule | Missed testing or reporting | 01/01/2026 | Open |
| Nitrate Rule | Missed testing or reporting | 01/01/2024 | 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 PEORIA
Filters matched to the specific contaminants in PEORIA'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 PEORIA'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 |
4.78 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 1194× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
26.8 ppb | 0.06 | — | — | — | — | — | 446× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
41.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 275× over |
| Bromodichloromethane Disinfection byproduct |
12.8 ppb | 0.06 | — | — | — | — | — | 214× over |
| Chromium (hexavalent) Heavy metal |
3.83 ppb | 0.02 | — | — | — | — | — | 191× over |
| Dibromochloromethane Disinfection byproduct |
16.1 ppb | 0.1 | — | — | — | — | — | 161× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
9.47 ppb | 0.1 | 60.0 | 60 | — | — | — | 95× over |
| Chloroform Disinfection byproduct |
9.71 ppb | 0.4 | — | — | — | — | — | 24× over |
| Nitrate and nitrite Inorganic |
2.39 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 17× over |
| Nitrate Inorganic |
2.21 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 16× over |
| Bromate Disinfection byproduct |
1.16 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 12× over |
| Bromoform Disinfection byproduct |
5.34 ppb | 0.5 | — | — | — | — | — | 11× over |
| 1,2-Dibromo-3-chloropropane (DBCP) Other |
0.00261 ppb | 0.0017 | 0.2 | — | — | — | — | 1.5× over |
| Bromochloromethane Other |
0.0428 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Radium, combined (-226 and -228) Radiological |
0.03 pCi/L | 0.05 | 5.0 | — | — | — | — | Below guideline |
| Vanadium Other |
8.95 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
2.2 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
38.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.003 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Selenium Heavy metal |
0.178 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Manganese Heavy metal |
0.354 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Chlorate Disinfection byproduct |
0.357 ppb | 210.0 | — | — | — | — | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.0149 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| Strontium Radiological |
0.714 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.00877 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.0171 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
9.93 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.317 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.135 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 PEORIA CITY OF.