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Tap water quality report

Grand Junction City of

EPA monitoring tested this supplier for 104 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
19
detected
26,000
people served
6
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Surface water
Ownership
Local government
Counties served
Mesa

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

6
health-based violations
18
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-03-01 → 1993-03-31
MCL Health-based Resolved 1993-03-01 → 1993-03-31
MCL Health-based Resolved 1993-03-01 → 1993-03-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2016-11-01 → 2016-11-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
54.85 µg/L 69%
of the EPA limit 80 µg/L
worst single sample: 88.2 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
43.555 µg/L 73%
of the EPA limit 60 µg/L
worst single sample: 50.3 µg/L
128/128 SYR4 2012–2019
Fluoride
790.5 µg/L 20%
of the EPA limit 4000 µg/L
worst single sample: 910 µg/L
40/40 SYR4 2012–2019
Nitrate
1000 µg/L 10%
of the EPA limit 10000 µg/L
 20/40 SYR4 2012–2019
Lead
0.0082 mg/L 55%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Bromodichloromethane
5.646 µg/L
No EPA limit set
worst single sample: 5.69 µg/L
12/12 SYR4 2016–2019
Chloroform
48.995 µg/L
No EPA limit set
worst single sample: 49.6 µg/L
12/12 SYR4 2016–2019
Dichloroacetic Acid
20.59 µg/L
No EPA limit set
worst single sample: 21.8 µg/L
12/12 SYR4 2016–2019
Trichloroacetic Acid
24.845 µg/L
No EPA limit set
worst single sample: 26 µg/L
12/12 SYR4 2016–2019
Monochloroacetic Acid
1.105 µg/L
No EPA limit set
worst single sample: 1.13 µg/L
11/12 SYR4 2016–2019
Nitrate-Nitrite
140 µg/L 1.4%
of the EPA limit 10000 µg/L
worst single sample: 161 µg/L
8/18 SYR4 2012–2017
Barium
38.25 µg/L 1.9%
of the EPA limit 2000 µg/L
worst single sample: 39 µg/L
6/10 SYR4 2012–2019
Dibromochloromethane
0.7740 µg/L
No EPA limit set
worst single sample: 0.7800 µg/L
4/12 SYR4 2016–2019
Dibromoacetic Acid
1.55 µg/L
No EPA limit set
worst single sample: 1.64 µg/L
3/12 SYR4 2016–2019
Ethylbenzene
0.2200 µg/L 0%
of the EPA limit 700 µg/L
 1/16 SYR4 2012–2019
Nitrite
50 µg/L 5%
of the EPA limit 1000 µg/L
 1/18 SYR4 2012–2017
Toluene
0.5200 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/16 SYR4 2012–2019
Vinyl Chloride
1.2 µg/L 60%
of the EPA limit 2 µg/L
 1/16 SYR4 2012–2019
Xylenes, Total
0.8100 µg/L 0%
of the EPA limit 10000 µg/L
 1/16 SYR4 2012–2019
85 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethylenecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KIM, RANDI
Phone
970-244-1429
Email
[email protected]

Frequently asked questions about Grand Junction City of

Is Grand Junction City of tap water safe to drink?

EPA monitoring detected 19 contaminants in Grand Junction City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Grand Junction City of's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Fluoride, Nitrate, Lead, and others. The full list with the level and data source for each is above.

How many people does Grand Junction City of serve?

Grand Junction City of reports serving 26,000 people in Colorado, per its EPA record.

Has Grand Junction City of had any water quality violations?

The EPA has 18 violations on file for Grand Junction City of, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.