Tap Water Quality Report
Tap water quality in APACHE JUNCTION, Arizona
Tap water in APACHE JUNCTION, Arizona receives a grade of C (76/100) from TapWaterSafety.org. It's served by ARIZONA WATER CO - APACHE JUNCTION. The most significant water quality concerns are: Arsenic significantly above health guideline; Chromium (hexavalent) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in APACHE JUNCTION's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving APACHE JUNCTION.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 5.26 ppb, 1316x above the EWG health guideline of 0.004 ppb.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 8.69 ppb, 434x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 8.49 ppb, 57x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for ARIZONA WATER CO - APACHE JUNCTION (system ID AZ0411004) 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.
Recommended filters for APACHE JUNCTION
Filters matched to the specific contaminants in APACHE JUNCTION'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 like TTHM. Look for NSF/ANSI 53 VOC or chloroform 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 APACHE JUNCTION'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 |
5.26 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 1316× over |
| Chromium (hexavalent) Heavy metal |
8.69 ppb | 0.02 | — | — | — | — | — | 434× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
8.49 ppb | 0.15 | 80.0 | 100 | — | — | — | 57× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
3.25 ppb | 0.06 | — | — | — | — | — | 54× over |
| Radium, combined (-226 and -228) Radiological |
0.6 pCi/L | 0.05 | 5.0 | — | — | — | — | 12× over |
| Nitrate Inorganic |
1.5 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 11× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
0.616 ppb | 0.1 | 60.0 | 60 | — | — | — | 6.2× over |
| Chlorate Disinfection byproduct |
219.3 ppb | 210.0 | — | — | — | — | — | 1.0× over |
| Molybdenum Other |
13.6 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
5.78 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
53.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
0.115 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
1.16 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
7.45 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.725 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.41 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
782.0 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 ARIZONA WATER CO - APACHE JUNCTION.