The Power of Information

National Drinking Water Database

o-Xylene in Montana

o-Xylene is a petroleum-derived solvent used in the printing, rubber, and leather industries; it is also used as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.

The Most Polluted Communities in Montana

3 water utilities reported detecting o-Xylene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average o-Xylene level

RankSystem Population Served Positive test results of total reported tests Average Level
1Sunrise Terrace Subd NO 2
Kalispell, MT
1081 of 31.6 ppb
(0 to 4.8 ppb)
2Flathead Co Water District NO 8
Whitefish, MT
3501 of 40.6 ppb
(0 to 2.4 ppb)
3Power Teton County Water Dist
Power, MT
1672 of 30.49 ppb
(0 to 0.81 ppb)

Health Based Limits for o-Xylene

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.10000 ppb
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.10000 ppb

Violation Summary for o-Xylene in Montana

There are no violations reported for this contaminant in Montana