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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Endothall


Status: Regulated - EPA has established a maximum legal limit in tapwater for this contaminant.

Endothall is an herbicide and defoliant used on a broad range of crops and aquatic plants. [read more]

 
Detected
Found above
health guidelines
Found above
legal limit
States
7
1
1
Water utilities
12
1
1
People Served
903,597
9,500
9,500

Health Concerns for Endothall:


Endothall Exposure by State

Water utilities in 7 states have reported detecting Endothall in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Endothall contaminationWater suppliers reporting Endothall above health-based limits
SystemsPopulationSystemsPopulation
California19,50019,500
Florida6608,70800
Kentucky1248,06400
Massachusetts120,77500
Wisconsin116,15000
Idaho125000
Indiana115000
Total12903,59719,500

The Most Polluted Communities

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

Ranked by highest average Endothall level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Folsom State Prison
Represa, CA
9,5001 of 1108.47 ppb
(108.47 ppb)
2Canton Water Dept
MA
20,7751 of 19 ppb
(9 ppb)
3Florida City
Florida City, FL
9,4451 of 33.83 ppb
(0 to 11.5 ppb)
4Covert Subd
Nampa, ID
2501 of 62.08 ppb
(0 to 12.5 ppb)
5City of Homestead
Homestead, FL
39,0001 of 31.92 ppb
(0 to 5.75 ppb)
6Stonecrest Subdivision
Summerfield, FL
3,8801 of 31.33 ppb
(0 to 4 ppb)
7Chicagoland Christian Village
Crown Point, IN
1501 of 121.17 ppb
(0 to 14 ppb)
8City of West Palm Beach
West Palm Beach, FL
101,8831 of 41.1 ppb
(0 to 4.4 ppb)
9Northern Kentucky Water Service
Ft Thomas, KY
248,0641 of 120.5 ppb
(0 to 6 ppb)
10City of Hallandale Beach
Hallandale Beach, FL
40,0001 of 70.36 ppb
(0 to 2.5 ppb)

Health Based Limits for Endothall

StandardDescriptionLevel
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.50 ppb
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.100 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.100 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.250 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.580 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.800 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.800 ppb

Testing Summary for Endothall

Are tests routinely required for Endothall by federal law?Yes
Water suppliers reporting tests for Endothall (2004-2009):9,529 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.4 per year

Violation Summary for Endothall

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards for Endothall since 2004

Maximum Contaminant Level Exceedance Violations0
Monitoring Violations745
Reporting Violations0

Occupational hazards

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

Irritation (skin, eyes, or lungs)

Type of concern: Reference:
Classified as irritant European Union - Classification & Labelling

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Classified as toxic or harmful European Union - Classification & Labelling



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingENDOTHAL•Toxic
•Toxic if swallowed
•Harmful
•Harmful in contact with skin
•Irritant (eyes, skin, or lungs)
•Irritating to eyes, respiratory system and skin



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.

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