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Tap water quality report

Green River, City of

EPA monitoring tested this supplier for 14 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
13
detected
10,500
people served
1
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
SWP
Ownership
Local government
Counties served
Sweetwater

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.

1
health-based violations
5
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-09-01 → 2000-09-30
MR Monitoring Resolved 2022-03-01 → 2022-05-31
MR Monitoring Resolved 2022-03-01 → 2022-05-31
MR Monitoring Archived 1993-04-01 → 1993-04-30
MR Monitoring Archived 1991-01-01 → 1991-01-31

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
60 µg/L 75%
of the EPA limit 80 µg/L
 61/61 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
38 µg/L 63%
of the EPA limit 60 µg/L
 61/61 SYR4 2013–2019
Copper
2240 µg/L 172%
of the EPA limit, in the worst sample — 1300 µg/L
 60/60 SYR4 2016–2019
Bromodichloromethane
9 µg/L
No EPA limit set
 49/49 SYR4 2014–2019
Chloroform
50 µg/L
No EPA limit set
 49/49 SYR4 2014–2019
Dibromochloromethane
3.9 µg/L
No EPA limit set
 49/49 SYR4 2014–2019
Trichloroacetic Acid
24 µg/L
No EPA limit set
 49/49 SYR4 2014–2019
Dichloroacetic Acid
20 µg/L
No EPA limit set
 48/49 SYR4 2014–2019
Lead
14 µg/L 93%
of the EPA limit 15 µg/L
 46/60 SYR4 2016–2019
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
 37/49 SYR4 2014–2019
Monochloroacetic Acid
2.2 µg/L
No EPA limit set
 21/49 SYR4 2014–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Monobromoacetic Acid
0.5200 µg/L
No EPA limit set
 1/49 SYR4 2014–2019
1 contaminants tested, none detected
Bromoform

Utility contact

Contact
PALMER, JASON
Phone
307-872-0540
Email
jpalmer@cityofgreenriver.org

Frequently asked questions about Green River, City of

Is Green River, City of tap water safe to drink?

EPA monitoring detected 13 contaminants in Green River, 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 Green River, City of's water?

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

How many people does Green River, City of serve?

Green River, City of reports serving 10,500 people in Wyoming, per its EPA record.

Has Green River, City of had any water quality violations?

The EPA has 5 violations on file for Green River, City of, of which 1 is 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.