Is Dillon Town of Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Summit

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2023-07-01 → 2023-09-30
MR	Monitoring	Resolved	2017-10-01 → 2017-10-31
MR	Monitoring	Resolved	2017-10-01 → 2017-10-31
MR	Monitoring	Resolved	2017-10-01 → 2017-10-31
MR	Monitoring	Resolved	2016-07-01 → 2016-09-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Lead	0.0080 mg/L 53% of the EPA limit 0.0150 mg/L	33/33	LCR	2025
TTHM	105.1 µg/L 131% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 114.8 µg/L	21/21	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	28.12 µg/L 47% of the EPA limit 60 µg/L worst single sample: 37.2 µg/L	21/21	SYR4	2012–2019
Bromodichloromethane	16.83 µg/L No EPA limit set worst single sample: 18.3 µg/L	15/15	SYR4	2015–2019
Chloroform	35.09 µg/L No EPA limit set worst single sample: 41.6 µg/L	15/15	SYR4	2015–2019
Dibromochloromethane	35.59 µg/L No EPA limit set worst single sample: 40.7 µg/L	15/15	SYR4	2015–2019
Dichloroacetic Acid	14.89 µg/L No EPA limit set worst single sample: 19.7 µg/L	14/15	SYR4	2015–2019
Bromoform	65.345 µg/L No EPA limit set worst single sample: 70.9 µg/L	12/15	SYR4	2015–2019
Dibromoacetic Acid	14.2 µg/L No EPA limit set worst single sample: 16 µg/L	11/15	SYR4	2015–2019
Fluoride	1022 µg/L 26% of the EPA limit 4000 µg/L worst single sample: 1040 µg/L	10/10	SYR4	2012–2019
Barium	26.55 µg/L 1.3% of the EPA limit 2000 µg/L worst single sample: 29 µg/L	8/8	SYR4	2012–2019
Trichloroacetic Acid	14.46 µg/L No EPA limit set worst single sample: 16.2 µg/L	7/15	SYR4	2015–2019
Monobromoacetic Acid	1.6565 µg/L No EPA limit set worst single sample: 1.7 µg/L	4/15	SYR4	2015–2019
Chromium	1 µg/L 1% of the EPA limit 100 µg/L	3/8	SYR4	2012–2019
Monochloroacetic Acid	1.336 µg/L No EPA limit set worst single sample: 1.34 µg/L	3/15	SYR4	2015–2019
Selenium	2 µg/L 4% of the EPA limit 50 µg/L	3/8	SYR4	2012–2019
Combined Radium (-226 And -228)	0.3000 pCi/L 6% of the EPA limit 5 pCi/L	1/1	SYR4	2012
Combined Uranium	1.4 µg/L 4.7% of the EPA limit 30 µg/L	1/1	SYR4	2012
Gross Alpha, Excl. Radon And U	0.5600 pCi/L 3.7% of the EPA limit 15 pCi/L	1/1	SYR4	2012

56 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrateOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: HELMAN, MARK A
Phone: 970-262-3426
Email: [email protected]

Frequently asked questions about Dillon Town of

Is Dillon Town of tap water safe to drink?

EPA monitoring detected 19 contaminants in Dillon Town 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 Dillon Town of's water?

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

How many people does Dillon Town of serve?

Dillon Town of reports serving 3,254 people in Colorado, per its EPA record.

Has Dillon Town of had any water quality violations?

The EPA has 30 violations on file for Dillon Town of, of which 0 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.