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Tap water quality report

Frenchtown, MT

EPA monitoring detected 19 contaminants across the 8 water suppliers serving Frenchtown. 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.

8
water suppliers
2,130
people served
19
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Frenchtown'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
Nitrate-Nitrite
1707.5 µg/L 17%
of the EPA limit 10000 µg/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2019
8/8 SYR4
Barium
1450 µg/L 73%
of the EPA limit 2000 µg/L
Highest in the city: GLESSNER TRAILER COURT · 67 people · 2012
7/8 SYR4
Nitrate
1380 µg/L 14%
of the EPA limit 10000 µg/L
Highest in the city: FRENCHTOWN VALLEY VIEW TR CT · 50 people · 2017
4/8 SYR4
Copper
89.75 µg/L 6.9%
of the EPA limit 1300 µg/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2017
Highest in the city: 295 µg/L — SORREL SPRINGS HOA · 250 people · 2019
8/8 SYR4
Fluoride
276 µg/L 6.9%
of the EPA limit 4000 µg/L
Highest in the city: FRENCHTOWN VALLEY VIEW TR CT · 50 people · 2017
7/8 SYR4
Arsenic
13 µg/L 130%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Highest in the city: GLESSNER TRAILER COURT · 67 people · 2017
6/8 SYR4
TTHM
7.875 µg/L 9.8%
of the EPA limit 80 µg/L
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2017
Highest in the city: 7 µg/L — FRENCHTOWN VALLEY VIEW TR CT · 50 people · 2019
8/8 SYR4
Chloroform
5.76 µg/L
No EPA limit set
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Gross Alpha, Excl. Radon And U
5 pCi/L 33%
of the EPA limit 15 pCi/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2014
3/8 SYR4
Combined Uranium
2.35 µg/L 7.8%
of the EPA limit 30 µg/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2014
Highest in the city: 4 µg/L — FRENCHTOWN VALLEY VIEW TR CT · 50 people · 2016
6/8 SYR4
Total Haloacetic Acids (HAA5)
3.12 µg/L 5.2%
of the EPA limit 60 µg/L
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Combined Radium (-226 And -228)
2.5 pCi/L 50%
of the EPA limit 5 pCi/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2017
4/8 SYR4
Dichloroacetic Acid
2.09 µg/L
No EPA limit set
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Bromodichloromethane
1.8 µg/L
No EPA limit set
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Dibromochloromethane
1.255 µg/L
No EPA limit set
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Trichloroacetic Acid
1.1 µg/L
No EPA limit set
Highest in the city: ELK MEADOWS RANCHETTES · 175 people · 2019
1/8 SYR4
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
Highest in the city: KING RANCH SUBDIVISION · 70 people · 2019
1/8 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: EL MAR ESTATES MSLA CO WATER · 1,350 people · 2019
Highest in the city: 0.0020 mg/L — MEADOW BROOK PARK · 120 people · 2025
8/8 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 Frenchtown

SupplierPopulation served
EL MAR ESTATES MSLA CO WATER 1,350
SORREL SPRINGS HOA 250
ELK MEADOWS RANCHETTES 175
MEADOW BROOK PARK 120
KING RANCH SUBDIVISION 70
GLESSNER TRAILER COURT 67
FRENCHTOWN VALLEY VIEW TR CT 50
GRINELL ESTATES HOA 48

Frequently asked questions about Frenchtown tap water

Is Frenchtown tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Frenchtown. 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 Frenchtown?

8 public water suppliers report drinking-water monitoring for Frenchtown, Montana to the EPA. Each is listed above with its population served.

What contaminants are in Frenchtown's water?

The contaminants EPA monitoring detected in Frenchtown include Nitrate-Nitrite, Barium, Nitrate, Copper, Fluoride. 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.