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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Tebuthiuron


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

Tebuthiuron is an herbicide primarily used on noncropland areas such as rangelands, rights-of-way and industrial sites.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
4
-
-
People Served
373,316
-
-

Health Concerns for Tebuthiuron:


Tebuthiuron Exposure by State

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

StateWater Suppliers with Tebuthiuron contamination
SystemsPopulation
California4373,316
Total4373,316

The Most Polluted Communities

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

Ranked by highest average Tebuthiuron level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Gswc - Southwest
Gardena, CA
168,9771 of 176.38 ppb
(76.38 ppb)
2California Water Service Co. - Dominguez
Torrance, CA
142,3261 of 127 ppb
(27 ppb)
3Paramount - City, Water Dept.
Paramount, CA
55,2001 of 119.67 ppb
(19.67 ppb)
4Sativa-L.A. Cwd
Compton, CA
6,8131 of 119 ppb
(19 ppb)

Health Based Limits for Tebuthiuron

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.500 ppb
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.1000 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.2000 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.3000 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.3000 ppb

Testing Summary for Tebuthiuron

Are tests routinely required for Tebuthiuron by federal law?No
Water suppliers reporting tests for Tebuthiuron (2004-2008):201 of 47,576
Average testing rate for water supplier reporting tests (2004-2008):0.3 per year

Developmental/reproductive toxicity

Type of concern: Reference:
Limited evidence of developmental 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

Ecotoxicology

Type of concern: Reference:
Wildlife and environmental toxicity European Union - Classification & Labelling



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingTEBUTHIURON•Harmful
•Harmful if swallowed
•Dangerous for the environment
•Very toxic to aquatic organisms
US EPA, 1788TEBUTHIURON•Developmental toxicity hazards: suspected



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.
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

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