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National Drinking Water Database

2-Methyl naphthalene in Delaware

2-Methyl naphthalene is a chemical used to make dyes, resins and pharmaceuticals (such as vitamin K); it is released into the environment from burning fossil fuels, industrial discharges, tar and asphalt.

The Most Polluted Communities in Delaware

2 water utilities reported detecting 2-Methyl naphthalene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average 2-Methyl naphthalene level

RankSystem Population Served Positive test results of total reported tests Average Level
1Autumn Woods Mobile Home Park
Wyoming, DE
751 of 10.2 ppb
(0.2 ppb)
2Long Neck Water Company
Long Neck, DE
14,8201 of 3< 0.01 ppb
(0 to 0.03 ppb)

Health Based Limits for 2-Methyl naphthalene

Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.30 ppb

Violation Summary for 2-Methyl naphthalene in Delaware

There are no violations reported for this contaminant in Delaware