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Tap water quality report

ZIP 59912 — Columbia Falls, MT

EPA monitoring across the 1 water supplier serving ZIP 59912 in Columbia Falls, MT detected 9 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
4,450
people served
9
contaminants found

What was found in ZIP 59912

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

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
715 µg/L 7.2%
of the EPA limit 10000 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2019
1/1 SYR4
Nitrate
690 µg/L 6.9%
of the EPA limit 10000 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2014
1/1 SYR4
Barium
210 µg/L 11%
of the EPA limit 2000 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2017
1/1 SYR4
Copper
193 µg/L 15%
of the EPA limit 1300 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2018
1/1 SYR4
Fluoride
74 µg/L 1.9%
of the EPA limit 4000 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2017
1/1 SYR4
Lead
4.8 µg/L 32%
of the EPA limit 15 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2018
1/1 SYR4
Di(2-ethylhexyl) Phthalate
3.5 µg/L 58%
of the EPA limit 6 µg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.2 pCi/L 24%
of the EPA limit 5 pCi/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2018
1/1 SYR4
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
Main supplier: COLUMBIA FALLS CITY OF · 4,450 people · 2024
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.

Water suppliers serving ZIP 59912

SupplierStatePopulation served
COLUMBIA FALLS CITY OF MT 4,450

Frequently asked questions about ZIP 59912 tap water

Is the tap water in ZIP 59912 safe to drink?

EPA testing detected 9 contaminants across the water suppliers serving ZIP 59912. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 59912?

1 public water supplier report EPA drinking-water monitoring for ZIP 59912. Each is listed above with its population served.

What contaminants are in ZIP 59912's water?

EPA monitoring detected Nitrate-Nitrite, Nitrate, Barium, Copper, Fluoride, and others across this ZIP's suppliers. The full list with levels and sources is above.