Tap Water Quality Report
Tap water quality in GRAND JUNCTION, Colorado
Tap water in GRAND JUNCTION, Colorado receives a grade of C (79/100) from TapWaterSafety.org. It's served by UTE WCD. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in GRAND JUNCTION's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving GRAND JUNCTION.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 19.8 ppb, 330x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 28.9 ppb, 289x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 31.7 ppb, 211x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for UTE WCD (system ID CO0139791) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Surface Water Treatment Rule | Missed testing or reporting | 06/01/2023 | Resolved |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Missed testing or reporting | 06/01/2023 | Resolved |
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 GRAND JUNCTION
Filters matched to the specific contaminants in GRAND JUNCTION'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.
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 GRAND 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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
19.8 ppb | 0.06 | — | — | — | — | — | 330× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
28.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 289× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
31.7 ppb | 0.15 | 80.0 | 100 | — | — | — | 211× over |
| Trichloroacetic acid Disinfection byproduct |
9.58 ppb | 0.1 | — | — | — | — | — | 96× over |
| Bromodichloromethane Disinfection byproduct |
5.22 ppb | 0.06 | — | — | — | — | — | 87× over |
| Dichloroacetic acid Disinfection byproduct |
17.1 ppb | 0.2 | — | — | — | — | — | 85× over |
| Chloroform Disinfection byproduct |
26.0 ppb | 0.4 | — | — | — | — | — | 65× over |
| Dibromoacetic acid Disinfection byproduct |
0.762 ppb | 0.03 | — | — | — | — | — | 25× over |
| Dibromochloromethane Disinfection byproduct |
0.535 ppb | 0.1 | — | — | — | — | — | 5.4× over |
| Nitrate Inorganic |
0.0733 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.0045 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Vanadium Other |
1.26 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.45 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.08 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0455 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.269 ppb | 1500.0 | — | — | — | — | — | 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 UTE WCD.