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Tap water quality report

Dacono City of

EPA monitoring tested this supplier for 42 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
9
detected
6,900
people served
7
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
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.

7
health-based violations
21
violations on file
0
still open
ViolationTypeStatusPeriod
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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
96.3 µg/L 120%
of the EPA limit, in the worst sample — 80 µg/L
 65/65 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
62.92 µg/L 105%
of the EPA limit, in the worst sample — 60 µg/L
 63/63 SYR4 2012–2019
Bromodichloromethane
6.6 µg/L
No EPA limit set
 38/38 SYR4 2015–2019
Chloroform
89.7 µg/L
No EPA limit set
 38/38 SYR4 2015–2019
Dichloroacetic Acid
28.4 µg/L
No EPA limit set
 38/38 SYR4 2015–2019
Trichloroacetic Acid
36.88 µg/L
No EPA limit set
 38/38 SYR4 2015–2019
Monochloroacetic Acid
5.8 µg/L
No EPA limit set
 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
4.8 µg/L
No EPA limit set
 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
bredd@cityofdacono.com

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.