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Tap water quality report

Lakeside, MT

EPA monitoring detected 19 contaminants across the 9 water suppliers serving Lakeside. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

9
water suppliers
2,185
people served
19
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Lakeside's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
5030 µg/L 50%
of the EPA limit 10000 µg/L
 8/9 SYR4
Nitrate
4710 µg/L 47%
of the EPA limit 10000 µg/L
 7/9 SYR4
Copper
860 µg/L 66%
of the EPA limit 1300 µg/L
 8/9 SYR4
Fluoride
210 µg/L 5.3%
of the EPA limit 4000 µg/L
 8/9 SYR4
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 7/9 SYR4
TTHM
51 µg/L 64%
of the EPA limit 80 µg/L
 1/9 SYR4
Chloroform
50 µg/L
No EPA limit set
 1/9 SYR4
Total Haloacetic Acids (HAA5)
34 µg/L 57%
of the EPA limit 60 µg/L
 1/9 SYR4
Dichloroacetic Acid
23 µg/L
No EPA limit set
 1/9 SYR4
Lead
22 µg/L 147%
of the EPA limit, in the worst sample — 15 µg/L
 8/9 SYR4
Gross Alpha, Excl. Radon And U
12 pCi/L 80%
of the EPA limit 15 pCi/L
 7/9 SYR4
Trichloroacetic Acid
10 µg/L
No EPA limit set
 1/9 SYR4
Combined Uranium
4 µg/L 13%
of the EPA limit 30 µg/L
 7/9 SYR4
Combined Radium (-226 And -228)
2 pCi/L 40%
of the EPA limit 5 pCi/L
 3/9 SYR4
Bromodichloromethane
1.6 µg/L
No EPA limit set
 1/9 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 3/9 SYR4
Picloram
1 µg/L 0.2%
of the EPA limit 500 µg/L
 1/9 SYR4
Monochloroacetic Acid
0.8100 µg/L
No EPA limit set
 1/9 SYR4
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 9/9 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 single worst sample on record — 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 Lakeside

SupplierPopulation served
LAKESIDE WATER SYSTEM 1,225
CHERRY VIEW 352
TAMARACK WOODS HOA LAKESIDE 180
YOUTH WITH A MISSION 150
LAKEVIEW PARK ESTATES HOMEOWNERS ASSOC 92
PLEASANT GROVE MANUFACTURED HOME SITES 70
CHAUTAUQUA TERRACE HOA 55
HILLSIDE HOMES 35
JUNIPER BAY VILLAS 26

Frequently asked questions about Lakeside tap water

Is Lakeside tap water safe to drink?

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

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

What contaminants are in Lakeside's water?

The contaminants EPA monitoring detected in Lakeside include Nitrate-Nitrite, Nitrate, Copper, Fluoride, Barium. The full list, with the highest level found 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.