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Tap water quality report

Opal, WY

EPA monitoring detected 13 contaminants across the 1 water supplier serving Opal. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
65
people served
13
contaminants found
Wyoming rankings Lead in Wyoming PFAS in Wyoming

What was found in Opal's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
4540 µg/L 114%
of the EPA limit, at the 95th percentile of samples — 4000 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Nitrate-Nitrite
230 µg/L 2.3%
of the EPA limit 10000 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Copper
136 µg/L 10%
of the EPA limit 1300 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2017
1/1 SYR4
Gross Alpha, Excl. Radon And U
14.62 pCi/L 97%
of the EPA limit 15 pCi/L
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
TTHM
10 µg/L 13%
of the EPA limit 80 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Lead
5.75 µg/L 38%
of the EPA limit 15 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2017
1/1 SYR4
Bromoform
3 µg/L
No EPA limit set
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Dibromochloromethane
3 µg/L
No EPA limit set
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Bromodichloromethane
2.1 µg/L
No EPA limit set
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Chloroform
2.1 µg/L
No EPA limit set
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Combined Uranium
1.7748 µg/L 5.9%
of the EPA limit 30 µg/L
Main supplier: OPAL, TOWN OF · 65 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.9500 pCi/L 19%
of the EPA limit 5 pCi/L
Main supplier: OPAL, TOWN OF · 65 people · 2018
1/1 SYR4
Lead
0.0160 mg/L 107%
above the EPA limit of 0.0150 mg/L
Main supplier: OPAL, TOWN OF · 65 people · 2026
1/1 LCR
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Opal

SupplierPopulation served
OPAL, TOWN OF 65

Frequently asked questions about Opal tap water

Is Opal tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Opal. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Opal?

1 public water supplier report drinking-water monitoring for Opal, Wyoming to the EPA. Each is listed above with its population served.

What contaminants are in Opal's water?

The contaminants EPA monitoring detected in Opal include Fluoride, Nitrate-Nitrite, Copper, Gross Alpha, Excl. Radon And U, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

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.