Is Dacono City of Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Weld

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
TT	Health-based	Resolved	2022-01-01
TT	Health-based	Resolved	2022-01-01
TT	Health-based	Resolved	2022-01-01
TT	Health-based	Resolved	2022-01-01
MCL	Health-based	Resolved	1995-08-01 → 1995-08-31
MCL	Health-based	Resolved	1995-08-01 → 1995-08-31
MCL	Health-based	Resolved	1995-08-01 → 1995-08-31
MR	Monitoring	Resolved	2025-10-01 → 2025-12-31
MR	Monitoring	Resolved	2025-10-01 → 2025-12-31
MR	Monitoring	Resolved	2025-10-01 → 2025-12-31

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
TTHM	81.94 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 96.3 µg/L	65/65	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	57.308 µg/L 96% of the EPA limit 60 µg/L worst single sample: 62.92 µg/L	63/63	SYR4	2012–2019
Bromodichloromethane	5.375 µg/L No EPA limit set worst single sample: 6.6 µg/L	38/38	SYR4	2015–2019
Chloroform	56.595 µg/L No EPA limit set worst single sample: 89.7 µg/L	38/38	SYR4	2015–2019
Dichloroacetic Acid	24.7705 µg/L No EPA limit set worst single sample: 28.4 µg/L	38/38	SYR4	2015–2019
Trichloroacetic Acid	29.4325 µg/L No EPA limit set worst single sample: 36.88 µg/L	38/38	SYR4	2015–2019
Monochloroacetic Acid	4.627 µg/L No EPA limit set worst single sample: 5.8 µg/L	32/38	SYR4	2015–2019
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	19/19	LCR	2025
Monobromoacetic Acid	4.6115 µg/L No EPA limit set worst single sample: 4.8 µg/L	2/38	SYR4	2015–2019

33 contaminants tested, none detected

11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformDibromoacetic AcidDibromochloromethaneHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact: REDD, BOBBY
Phone: 303-833-2317
Email: [email protected]

Frequently asked questions about Dacono City of

Is Dacono City of tap water safe to drink?

EPA monitoring detected 9 contaminants in Dacono 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 Dacono City of's water?

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

How many people does Dacono City of serve?

Dacono City of reports serving 6,900 people in Colorado, per its EPA record.

Has Dacono City of had any water quality violations?

The EPA has 21 violations on file for Dacono City of, of which 7 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.