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Tap water quality report

Hildale - Colorado City

EPA monitoring tested this supplier for 106 contaminants and detected 29. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

106
contaminants tested
29
detected
6,100
people served
6
health-based violations
Utah rankingsLead in UtahPFAS in Utah
Water source
Ground water
Ownership
Local government
Counties served
Washington

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
944
violations on file
4
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2017-08-20
TT Health-based Resolved 2017-08-20
TT Health-based Resolved 2017-08-20
MCL Health-based Resolved 2015-09-01 → 2015-09-30
MCL Health-based Resolved 2015-09-01 → 2015-09-30
MCL Health-based Resolved 2015-09-01 → 2015-09-30
MR Monitoring Unaddressed 2025-06-04
MR Monitoring Unaddressed 2025-06-04
MON Monitoring Resolved 2025-05-01 → 2025-05-31
MON Monitoring Resolved 2025-05-01 → 2025-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0170 µg/L 2/4 2024
Pfhxa 0.0120 µg/L 2/4 2024
PFHXS 0.0220 µg/L 2/4 2024
Pfpes 0.0130 µg/L 2/4 2024
PFOS 0.0260 µg/L 1/4 2024
Pfpea 0.0043 µg/L 1/4 2024

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
Copper
755.21 µg/L 58%
of the EPA limit 1300 µg/L
worst single sample: 838 µg/L
40/42 SYR4 2014–2018
Lead
8.203 µg/L 55%
of the EPA limit 15 µg/L
worst single sample: 11.5 µg/L
32/42 SYR4 2014–2018
Nitrate
800 µg/L 8%
of the EPA limit 10000 µg/L
 20/42 SYR4 2013–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2023
Gross Alpha, Excl. Radon And U
14.35 pCi/L 96%
of the EPA limit 15 pCi/L
worst single sample: 16 pCi/L
12/15 SYR4 2013–2019
Gross Beta Particle Activity
25.9 pCi/L
No EPA limit set
worst single sample: 27 pCi/L
12/13 SYR4 2013–2019
Combined Radium (-226 And -228)
14.965 pCi/L 299%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 16 pCi/L
10/10 SYR4 2015–2019
Bromodichloromethane
2.75 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
8/12 SYR4 2013–2019
Bromoform
35.675 µg/L
No EPA limit set
worst single sample: 39 µg/L
8/12 SYR4 2013–2019
Dibromochloromethane
13.305 µg/L
No EPA limit set
worst single sample: 13.9 µg/L
8/12 SYR4 2013–2019
TTHM
54.925 µg/L 69%
of the EPA limit 80 µg/L
worst single sample: 55.8 µg/L
8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
11.265 µg/L 19%
of the EPA limit 60 µg/L
worst single sample: 11.3 µg/L
8/8 SYR4 2013–2019
Barium
807.37 µg/L 40%
of the EPA limit 2000 µg/L
worst single sample: 823 µg/L
7/7 SYR4 2013–2019
Arsenic
7.85 µg/L 78%
of the EPA limit 10 µg/L
worst single sample: 9.4 µg/L
6/7 SYR4 2013–2019
Dibromoacetic Acid
11.275 µg/L
No EPA limit set
worst single sample: 11.3 µg/L
6/6 SYR4 2013–2019
Fluoride
480 µg/L 12%
of the EPA limit 4000 µg/L
worst single sample: 500 µg/L
5/7 SYR4 2013–2019
Nitrate-Nitrite
515 µg/L 5.1%
of the EPA limit 10000 µg/L
worst single sample: 593 µg/L
5/8 SYR4 2012–2018
Selenium
9.095 µg/L 18%
of the EPA limit 50 µg/L
worst single sample: 9.2 µg/L
4/7 SYR4 2013–2019
Lithium
71 µg/L
No EPA limit set
 2/4 UCMR-5 2024
Cyanide
2 µg/L 1%
of the EPA limit 200 µg/L
 1/7 SYR4 2013–2019
Chloroform
0.6000 µg/L
No EPA limit set
 1/12 SYR4 2013–2019
Chromium
5 µg/L 5%
of the EPA limit 100 µg/L
 1/6 SYR4 2013–2019
Trichloroacetic Acid
1.3 µg/L
No EPA limit set
 1/6 SYR4 2013–2019
77 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
POSTEMA, JEROLD
Phone
602-614-6912
Email
[email protected]

Frequently asked questions about Hildale - Colorado City

Is Hildale - Colorado City tap water safe to drink?

EPA monitoring detected 29 contaminants in Hildale - Colorado City'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 Hildale - Colorado City's water?

EPA monitoring detected Copper, Lead, Nitrate, Lead, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Hildale - Colorado City serve?

Hildale - Colorado City reports serving 6,100 people in Utah, per its EPA record.

Has Hildale - Colorado City had any water quality violations?

The EPA has 944 violations on file for Hildale - Colorado City, of which 6 are health-based (a contaminant limit or required treatment was breached) and 4 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.