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Tap water quality report

Geyser, MT

EPA monitoring detected 12 contaminants across the 1 water supplier serving Geyser. 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
125
people served
12
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Geyser'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
485 µg/L 12%
of the EPA limit 4000 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Copper
75.5 µg/L 5.8%
of the EPA limit 1300 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Nitrate-Nitrite
40 µg/L 0.4%
of the EPA limit 10000 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
11 pCi/L 73%
of the EPA limit 15 pCi/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Lead
8.9 µg/L 59%
of the EPA limit 15 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Chromium
5 µg/L 5%
of the EPA limit 100 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Di(2-ethylhexyl) Phthalate
2.665 µg/L 44%
of the EPA limit 6 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Antimony, Total
2 µg/L 33%
of the EPA limit 6 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.7 pCi/L 34%
of the EPA limit 5 pCi/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2014
1/1 SYR4
Combined Uranium
0.4000 µg/L 1.3%
of the EPA limit 30 µg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2019
1/1 SYR4
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
Main supplier: GEYSER JUDITH BASIN CTY WATER SEWER DIST · 125 people · 2025
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 Geyser

SupplierPopulation served
GEYSER JUDITH BASIN CTY WATER SEWER DIST 125

Frequently asked questions about Geyser tap water

Is Geyser tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Geyser. 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 Geyser?

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

What contaminants are in Geyser's water?

The contaminants EPA monitoring detected in Geyser include Fluoride, Copper, Nitrate-Nitrite, Gross Alpha, Excl. Radon And U, Lead. 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.