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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Endosulfan II


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

Endosulfan II (beta) is an isomer of the insecticide endosulfan used on food crops such as grains, tea, fruits, vegetables, on nonfood crops, and as a wood preservative; it is bioaccumulative, persistent, and a potential endocrine disruptor.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
1
-
-
People Served
201,000
-
-

Health Concerns for Endosulfan II:


Endosulfan II Exposure by State

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

StateWater Suppliers with Endosulfan II contamination
SystemsPopulation
Delaware1201,000
Total1201,000

The Most Polluted Communities

1 water utilities reported detecting Endosulfan II in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Endosulfan II level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Artesian Water Company
Newark, DE
201,0001 of 83< 0.01 ppb
(0 to 0.02 ppb)

Health Based Limits for Endosulfan II

StandardDescriptionLevel
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.62 ppb

Testing Summary for Endosulfan II

Are tests routinely required for Endosulfan II by federal law?No
Water suppliers reporting tests for Endosulfan II (2004-2009):1,081 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.3 per year

Endocrine disruption

Type of concern: Reference:
Human disruptor - moderate evidence European Commission on Endocrine Disruption
Limited evidence of wildlife and the environment disruption European Commission on Endocrine Disruption

Persistence and bioaccumulation

Type of concern: Reference:
Persistent, bioaccumulative in wildlife EPA PBTs - Waste Minimization Program (RCRA)

Cancer

Type of concern: Reference:
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Toxicology 2004
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- EHP, Environmental Health Perspectives 2000
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Environmental and Molecular Mutagenesis 2006
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- Environmental and Molecular Mutagenesis 2006



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
EPA PBTs - Waste Minimization Program (RCRA)ENDOSULFAN, BETA•Persistent, bioaccumulative toxicant - Resource Conservation and Recovery Act, priority chemical for voluntary waste/emission reductions
European Commission on Endocrine DisruptionENDOSULFAN (BETA)HH-CAT2;WF-CAT2
RTECS®- EHP, Environmental Health Perspectives 20005-NORBORNENE-2,3-DIMETHANOL, 1,4,5,6,7,7-HEXACHLORO-, CYCLIC SULFITE, EXO-• mutagenic - Positive mutation assay: DNA Damage ( human lvr)
RTECS®- Environmental and Molecular Mutagenesis 20065-NORBORNENE-2,3-DIMETHANOL, 1,4,5,6,7,7-HEXACHLORO-, CYCLIC SULFITE, EXO-• mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium )
• mutagenic - Positive mutation assay: DNA Damage ( human lym)
RTECS®- Toxicology 20045-NORBORNENE-2,3-DIMETHANOL, 1,4,5,6,7,7-HEXACHLORO-, CYCLIC SULFITE, EXO-• mutagenic - Positive mutation assay: Micronucleus test ( human lvr)
• mutagenic - Positive mutation assay: Sister Chromatid Exchange ( human lvr)



references

government/industry list/academic study reference
EPA PBTs - Waste Minimization Program (RCRA)EPA (U.S. Environmental Protection Agency). 1998. Resource Conservatin and Recovery Act (RCRA) Waste Minimization Program - priority chemicals for elimination or reduction.
European Commission on Endocrine DisruptionEU (European Union)- Strategy for Endocrine Disrupters 2007. Commision on endocrin disruption requested by the European Parliament in 1998.
RTECS®- EHP, Environmental Health Perspectives 2000RTECS®- EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- -,559,2000
RTECS®- Environmental and Molecular Mutagenesis 2006RTECS®- Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 47,682,2006
RTECS®- Toxicology 2004RTECS®- Toxicology. (Elsevier Scientific Pub. Ireland, Ltd., POB 85, Limerick, Ireland) V.1- 198,315,2004

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