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Tap water quality report

Dillon Valley District

EPA monitoring tested this supplier for 72 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
14
detected
3,063
people served
0
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
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.

0
health-based violations
11
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-11-01 → 2025-11-30
MR Monitoring Resolved 2025-11-01 → 2025-11-30
MR Monitoring Resolved 2025-11-01 → 2025-11-30
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
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Resolved 1994-02-01 → 1994-02-28

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
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Nitrate
130 µg/L 1.3%
of the EPA limit 10000 µg/L
 12/16 SYR4 2012–2019
TTHM
38.65 µg/L 48%
of the EPA limit 80 µg/L
worst single sample: 42.9 µg/L
11/11 SYR4 2012–2019
Bromodichloromethane
8.755 µg/L
No EPA limit set
worst single sample: 9.7 µg/L
10/10 SYR4 2012–2019
Chloroform
12.075 µg/L
No EPA limit set
worst single sample: 15 µg/L
10/10 SYR4 2012–2019
Dibromochloromethane
14.095 µg/L
No EPA limit set
worst single sample: 15.4 µg/L
10/10 SYR4 2012–2019
Barium
34.6 µg/L 1.7%
of the EPA limit 2000 µg/L
worst single sample: 36 µg/L
8/8 SYR4 2012–2019
Fluoride
289 µg/L 7.2%
of the EPA limit 4000 µg/L
worst single sample: 310 µg/L
8/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.935 µg/L 37%
of the EPA limit 60 µg/L
worst single sample: 26.1 µg/L
8/8 SYR4 2012–2019
Bromoform
7.925 µg/L
No EPA limit set
worst single sample: 9.6 µg/L
6/10 SYR4 2012–2019
Dichloroacetic Acid
5.14 µg/L
No EPA limit set
worst single sample: 5.2 µg/L
5/5 SYR4 2015–2019
Trichloroacetic Acid
3.26 µg/L
No EPA limit set
worst single sample: 3.5 µg/L
4/5 SYR4 2015–2019
Dibromoacetic Acid
1.96 µg/L
No EPA limit set
worst single sample: 2 µg/L
3/5 SYR4 2015–2019
Selenium
2.337 µg/L 4.7%
of the EPA limit 50 µg/L
worst single sample: 2.5 µg/L
3/8 SYR4 2012–2019
58 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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JUSTICH, ANGELIQUE
Phone
970-306-7233
Email
[email protected]

Frequently asked questions about Dillon Valley District

Is Dillon Valley District tap water safe to drink?

EPA monitoring detected 14 contaminants in Dillon Valley District'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 Valley District's water?

EPA monitoring detected Lead, Nitrate, TTHM, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Dillon Valley District serve?

Dillon Valley District reports serving 3,063 people in Colorado, per its EPA record.

Has Dillon Valley District had any water quality violations?

The EPA has 11 violations on file for Dillon Valley District, 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.