Tap Water Quality Report
Tap water quality in Anaheim, California
Tap water in Anaheim, California receives a grade of F (55/100) from TapWaterSafety.org. It's served by 4 public water systems, primarily GSWC - FLORENCE/GRAHAM. The most significant water quality concerns are: Chromium (hexavalent) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic* significantly above health guideline; PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Anaheim's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving Anaheim.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 27.8 ppb, 1388x above the EWG health guideline of 0.02 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Arsenic* significantly above health guideline
Moderate concernArsenic* detected at 0.16 ppb, 40x above the EWG health guideline of 0.004 ppb.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 1.14 ppt, 1143x above the EWG health guideline of 0.001 ppt.
EPA compliance record
Official U.S. EPA records for GSWC - FLORENCE/GRAHAM (system ID CA1910077) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Water systems serving Anaheim
Anaheim is served by 4 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
GSWC - FLORENCE/GRAHAM
- Chromium (hexavalent) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
- Arsenic* significantly above health guideline
GSWC - BELL, BELL GARDENS
- PFAS contamination
- Perfluorohexane sulfonate (PFHXS) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
GOLDEN STATE WC - WEST ORANGE COUNTY
- PFAS contamination
- Perfluorohexane sulfonate (PFHXS) significantly above health guideline
- Arsenic significantly above health guideline
CITY OF ANAHEIM
- PFAS contamination
- Perfluorohexane sulfonate (PFHXS) significantly above health guideline
- Arsenic significantly above health guideline
Recommended filters for Anaheim
Filters matched to the specific contaminants in Anaheim's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
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 Anaheim'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) PFAS |
8.86 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorooctane sulfonate (PFOS) PFAS |
22.4 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
8.8 ppt | 0.001 | 10.0 | — | — | — | — | 8799× over |
| Chromium (hexavalent) Heavy metal |
27.8 ppb | 0.02 | — | — | — | — | — | 1388× over |
| Arsenic Heavy metal |
2.07 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 517× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
13.3 ppb | 0.06 | — | — | — | — | — | 222× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
30.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 200× over |
| Bromodichloromethane Disinfection byproduct |
8.4 ppb | 0.06 | — | — | — | — | — | 140× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.582 ppt | 0.006 | 10.0 | — | — | — | — | 97× over |
| Dibromochloromethane Disinfection byproduct |
7.4 ppb | 0.1 | — | — | — | — | — | 74× over |
| Dibromoacetic acid Disinfection byproduct |
1.93 ppb | 0.03 | — | — | — | — | — | 64× over |
| Arsenic* Heavy metal |
0.16 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 40× over |
| Trichloroacetic acid Disinfection byproduct |
3.54 ppb | 0.1 | — | — | — | — | — | 35× over |
| Perfluorodecanoic acid (PFDA) PFAS |
0.189 ppt | 0.006 | — | — | — | — | — | 32× over |
| Chloroform Disinfection byproduct |
11.2 ppb | 0.4 | — | — | — | — | — | 28× over |
| Dichloroacetic acid Disinfection byproduct |
4.12 ppb | 0.2 | — | — | — | — | — | 21× over |
| Uranium Radiological |
8.7 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 20× over |
| Nitrate and nitrite Inorganic |
2.22 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 16× over |
| Nitrate Inorganic |
1.96 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 14× over |
| Bromate Disinfection byproduct |
0.723 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 7.2× over |
| Bromochloroacetic acid Disinfection byproduct |
0.138 ppb | 0.02 | — | — | — | — | — | 6.9× over |
| Bromoform Disinfection byproduct |
3.27 ppb | 0.5 | — | — | — | — | — | 6.5× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.766 ppb | 0.35 | — | — | 50 | 1 | — | 2.2× over |
| Tetrachloroethylene (perchloroethylene) Volatile organic compound |
0.128 ppb | 0.06 | 5.0 | — | — | — | — | 2.1× over |
| Nitrate and nitrite* Inorganic |
0.287 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.0× over |
| Perchlorate Disinfection byproduct |
1.52 ppb | 1.0 | — | — | — | — | — | 1.5× over |
| Radium, combined (-226 and -228)* Radiological |
0.07 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.4× over |
| Radium, combined (-226 and -228) Radiological |
0.04 pCi/L | 0.05 | 5.0 | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
147.2 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Perfluoropentane sulfonic acid (PFPeS) PFAS |
0.575 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Trichloroethylene Volatile organic compound |
0.142 ppb | 0.4 | 5.0 | 10 | 20 | 1.7 | — | Below guideline |
| Molybdenum Other |
7.66 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
109.2 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
3.6 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
91.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Aluminum* Heavy metal |
77.5 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Manganese Heavy metal |
7.54 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| 1,2-Dichloroethane Volatile organic compound |
0.0134 ppb | 0.4 | 5.0 | — | — | — | — | Below guideline |
| Selenium Heavy metal |
0.9 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
5.57 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
4.9 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.56 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
3.67 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.00531 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
1.34 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.851 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0114 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.0227 ppb | 53.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethylene Volatile organic compound |
0.395 ppb | — | 7.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.462 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Chromium (total) Heavy metal |
22.1 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Lithium Other |
21.5 ppb | — | — | — | — | — | — | Below guideline |
| Bromide Other |
115.2 ppb | — | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.0493 ppb | — | — | — | — | — | — | Below guideline |
| Dichlorodifluoromethane Other |
0.0453 ppb | — | — | — | — | — | — | Below guideline |
| Germanium Other |
0.0473 ppb | — | — | — | — | — | — | Below guideline |
| 1-Butanol Other |
0.0831 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 GSWC - FLORENCE/GRAHAM.