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National Drinking Water Database

EPTC (Eptam) in Washington

EPTC (Eptam, S-Ethyl N,N-dipropylthiocarbamate) is an herbicide used as a soil fumigant for corn and other crops for the control of grassy, perennial and broadleaf weeds.

The Most Polluted Communities in Washington

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

Ranked by highest average EPTC (Eptam) level

RankSystem Population Served Positive test results of total reported tests Average Level
1City of Warden
Warden, WA
2,5751 of 10.2 ppb
(0.2 ppb)

Health Based Limits for EPTC (Eptam)

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.200 ppb

Violation Summary for EPTC (Eptam) in Washington

There are no violations reported for this contaminant in Washington