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:
- Developmental/reproductive toxicity
- Occupational hazards
- Organ system toxicity (non-reproductive)
- Ecotoxicology
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.
| State | Water Suppliers with Tebuthiuron contamination | |
|---|---|---|
| Systems | Population | |
| California | 4 | 373,316 |
| Total | 4 | 373,316 |
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
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Gswc - Southwest Gardena, CA | 168,977 | 1 of 1 | 76.38 ppb (76.38 ppb) |
| 2 | California Water Service Co. - Dominguez Torrance, CA | 142,326 | 1 of 1 | 27 ppb (27 ppb) |
| 3 | Paramount - City, Water Dept. Paramount, CA | 55,200 | 1 of 1 | 19.67 ppb (19.67 ppb) |
| 4 | Sativa-L.A. Cwd Compton, CA | 6,813 | 1 of 1 | 19 ppb (19 ppb) |
Health Based Limits for Tebuthiuron
| Standard | Description | Level |
|---|---|---|
| Lifetime health-based limit, non-cancer risk | Concentration 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 Level | A 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 Level | A 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 exposure | Concentration 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 exposure | Concentration 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 & Labelling | TEBUTHIURON | •Harmful •Harmful if swallowed •Dangerous for the environment •Very toxic to aquatic organisms |
| US EPA, 1788 | TEBUTHIURON | •Developmental toxicity hazards: suspected |
references
| government/industry list/academic study | reference |
| European Union - Classification & Labelling | CPS&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 Information | US 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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