The Power of Information

National Drinking Water Database

o-Xylene in New Hampshire

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 New Hampshire

7 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
1Hampstead Area Water Co
Hampstead, NH
2,6551 of 12 ppb
(2 ppb)
2Laura S Barnes Plains School
2001 of 11.6 ppb
(1.6 ppb)
3Sandown Central School
2291 of 1< 0.01 ppb
(< .01 to 0.0026 ppb)
4Rosebrook Water Co Inc
Carroll, NH
1,3031 of 1< 0.01 ppb
(< .01 to 0.0024 ppb)
5Peu /Lamplighter Village
1621 of 1< 0.01 ppb
(< .01 to 0.0009 ppb)
6Little Mill Woods
01 of 1< 0.01 ppb
(< .01 to 0.0006 ppb)
7Leisure Village
Raymond, NH
3151 of 1< 0.01 ppb
(< .01 to 0.0005 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 New Hampshire

There are no violations reported for this contaminant in New Hampshire