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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

EPTC (Eptam)


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

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.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
1
-
-
People Served
2,575
-
-

Health Concerns for EPTC (Eptam):


EPTC (Eptam) Exposure by State

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

StateWater Suppliers with EPTC (Eptam) contamination
SystemsPopulation
Washington12,575
Total12,575

The Most Polluted Communities

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
(Range)
1City of Warden
Warden, WA
2,5751 of 10.2 ppb
(0.2 ppb)

Health Based Limits for EPTC (Eptam)

StandardDescriptionLevel
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

Testing Summary for EPTC (Eptam)

Are tests routinely required for EPTC (Eptam) by federal law?No
Water suppliers reporting tests for EPTC (Eptam) (2004-2009):1,220 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.3 per year

Developmental/reproductive toxicity

Type of concern: Reference:
Possible human developmental toxicant California EPA Proposition 65
Human developmental toxicant - strong evidence Proposition 65 List of Carcinogens
Limited evidence of reproductive toxicity US EPA, 1788

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to low doses European Union - Classification & Labelling

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Classified as toxic or harmful European Union - Classification & Labelling
Limited evidence of cardiovascular or blood toxicity US EPA, 1788
One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient) EPA Toxic Release Inventory PBTs

Cancer

Type of concern: Reference:
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- Genetika (Moscow) 1986



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingEPTC•Harmful
•Harmful if swallowed
EPA Toxic Release Inventory PBTsS-ETHYL ESTERCARBAMOTHIOIC ACID, DIPROPYL-•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
California EPA Proposition 65ETHYL DIPROPYLTHIOCARBAMATE •Developmental toxin: California Proposition 65
US EPA, 1788ETHYL DIPROPYLTHIOCARBAMATE•Cardiovascular or blood toxicity hazards: suspected
US EPA, 1788ETHYL DIPROPYLTHIOCARBAMATE•Reproductive toxicity hazards: suspected
Proposition 65 List of CarcinogensETHYL DIPROPYLTHIOCARBAMATE•Developmental toxicity hazards: recognized
RTECS®- Genetika (Moscow) 1986EPTC• mutagenic - Positive mutation assay: Mutation in Micro-organism (Escherichia coli )



references

government/industry list/academic study reference
European Union - Classification & LabellingCPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
California EPA Proposition 65California EPA (California Environmental Protection Agency). 9/2008. Office of Environmental Health Hazard Assessment. Safe Drinking Water and Toxic Enforcement Act of 1986. Chemicals known to the State to cause cancer or reproductive toxicity.
Scorecard.org Toxicity InformationUS EPA. Addition of Certain Chemicals; Toxic Chemical Release Reporting; Community Right to Know. Proposed and Final Rules. 59 Federal Register 1788 (Jan 12, 1994); 59 Federal Register 61432 (November 30, 1994). Summarized in Hazard Information on Toxic Chemicals Added to EPCRA Section 313 Under Chemical Expansion. http://www.epa.gov/tri/chemical/hazard_cx.htm
Scorecard.org Toxicity InformationUS EPA. Addition of Certain Chemicals; Toxic Chemical Release Reporting; Community Right to Know. Proposed and Final Rules. 59 Federal Register 1788 (Jan 12, 1994); 59 Federal Register 61432 (November 30, 1994). Summarized in Hazard Information on Toxic Chemicals Added to EPCRA Section 313 Under Chemical Expansion. http://www.epa.gov/tri/chemical/hazard_cx.htm
Scorecard.org Toxicity InformationProposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.
RTECS®- Genetika (Moscow) 1986RTECS®- Genetika (Moscow). For English translation, see SOGEBZ. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) No.1- 22,2416,1986

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