Is Douglas, City of Tap Water Safe? Quality Report

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

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	Archived	1994-01-01 → 1994-01-31
TT	Health-based	Archived	1993-12-01 → 1993-12-31
MR	Monitoring	Resolved	2002-01-01 → 2004-12-31
MR	Monitoring	Resolved	2002-01-01 → 2004-12-31
MR	Monitoring	Archived	2000-01-01 → 2000-01-31
MR	Monitoring	Archived	1994-10-01 → 1994-12-31
MR	Monitoring	Archived	1994-07-01 → 1994-09-30
MR	Monitoring	Archived	1994-04-01 → 1994-06-30
MR	Monitoring	Archived	1976-07-01 → 1980-06-30
MR	Monitoring	Archived	1976-07-01 → 1980-06-30

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
TTHM	66.465 µg/L 83% of the EPA limit 80 µg/L worst single sample: 75 µg/L	64/67	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	33.83 µg/L 56% of the EPA limit 60 µg/L worst single sample: 55 µg/L	59/59	SYR4	2012–2019
Dibromochloromethane	6.69 µg/L No EPA limit set worst single sample: 8.7 µg/L	52/55	SYR4	2014–2019
Bromodichloromethane	17.5 µg/L No EPA limit set worst single sample: 21 µg/L	51/55	SYR4	2014–2019
Chloroform	46.4 µg/L No EPA limit set worst single sample: 52 µg/L	51/55	SYR4	2014–2019
Bromoform	2.97 µg/L No EPA limit set worst single sample: 3.6 µg/L	47/55	SYR4	2014–2019
Copper	383.2 µg/L 29% of the EPA limit 1300 µg/L worst single sample: 890 µg/L	45/45	SYR4	2015–2018
Dibromoacetic Acid	2.67 µg/L No EPA limit set worst single sample: 3.1 µg/L	44/46	SYR4	2014–2019
Nitrate-Nitrite	970 µg/L 9.7% of the EPA limit 10000 µg/L worst single sample: 1000 µg/L	44/56	SYR4	2012–2019
Dichloroacetic Acid	8.075 µg/L No EPA limit set worst single sample: 26 µg/L	36/46	SYR4	2014–2019
Lead	25 µg/L 167% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 110 µg/L	31/45	SYR4	2015–2018
Trichloroacetic Acid	13.55 µg/L No EPA limit set worst single sample: 26 µg/L	26/46	SYR4	2014–2019
Fluoride	590 µg/L 15% of the EPA limit 4000 µg/L worst single sample: 700 µg/L	12/12	SYR4	2013–2019
Combined Radium (-226 And -228)	3.71 pCi/L 74% of the EPA limit 5 pCi/L worst single sample: 4.7 pCi/L	10/10	SYR4	2012–2019
Lead	0.0060 mg/L 40% of the EPA limit 0.0150 mg/L	10/10	LCR	2024
Combined Uranium	14 µg/L 47% of the EPA limit 30 µg/L	7/12	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	12.3 pCi/L 82% of the EPA limit 15 pCi/L worst single sample: 13.3 pCi/L	6/11	SYR4	2012–2019
Arsenic	7 µg/L 70% of the EPA limit 10 µg/L	5/11	SYR4	2014–2019
Selenium	3.8 µg/L 7.6% of the EPA limit 50 µg/L worst single sample: 4 µg/L	5/11	SYR4	2014–2019
Monochloroacetic Acid	1.995 µg/L No EPA limit set worst single sample: 2.1 µg/L	4/46	SYR4	2014–2019
Monobromoacetic Acid	0.6160 µg/L No EPA limit set worst single sample: 0.6200 µg/L	2/46	SYR4	2014–2019
Thallium, Total	0.8000 µg/L 40% of the EPA limit 2 µg/L	2/11	SYR4	2014–2019
Antimony, Total	1 µg/L 17% of the EPA limit 6 µg/L	1/11	SYR4	2014–2019
Barium	100 µg/L 5% of the EPA limit 2000 µg/L	1/11	SYR4	2014–2019

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-DAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: OBERLANDER, JOSH
Phone: 307-358-9750
Email: [email protected]

Frequently asked questions about Douglas, City of

Is Douglas, City of tap water safe to drink?

EPA monitoring detected 24 contaminants in Douglas, 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 Douglas, City of's water?

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

How many people does Douglas, City of serve?

Douglas, City of reports serving 6,400 people in Wyoming, per its EPA record.

Has Douglas, City of had any water quality violations?

The EPA has 10 violations on file for Douglas, City of, of which 2 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.