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National Drinking Water Database

Lead (total) in Montana

Lead is a metal that enters water by corrosion of household plumbing systems, discharge of industrial pollution and erosion of natural deposits. [read more]

The Most Polluted Communities in Montana

541 water utilities reported detecting Lead (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Lead (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Spring Tree Ridge
752 of 225.25 ppb
(0.5 to 50 ppb)
2Laurel Municipal Water System
Laurel, MT
6,3394 of 416.83 ppb
(0.1 to 66 ppb)
3Saddleback Ridge Estates
986 of 815.51 ppb
(0 to 66 ppb)
4Beaverhead Jackson Water and Sewer Dist
Jackson, MT
301 of 114 ppb
(14 ppb)
5MT Ellis Academy
Bozeman, MT
1014 of 413.48 ppb
(1 to 42.6 ppb)
6Palisades Apartments
Miles City, MT
604 of 410.9 ppb
(5.4 to 17 ppb)
7Honey Lane Court Hamilton
Missoula, MT
402 of 29.5 ppb
(1 to 18 ppb)
8Sunset West Rsid
Missoula, MT
904 of 47.6 ppb
(1.2 to 24.4 ppb)
9Town of Medicine Lake
Medicine Lake, MT
3575 of 57.5 ppb
(3 to 19.11 ppb)
10City of Sidney
Sidney, MT
5,0008 of 87.14 ppb
(1.5 to 31.5 ppb)

Health Based Limits for Lead (total)

Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.2 ppb

Violation Summary for Lead (total) in Montana

There are no violations reported for this contaminant in Montana