National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
Metribuzin
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
Metribuzin is an herbicide used primarily on soybeans, potatoes and alfalfa.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 9 |
- |
- |
| Water utilities | 10 |
- |
- |
| People Served | 737,088 |
- |
- |
Health Concerns for Metribuzin:
- Endocrine disruption
- Occupational hazards
- Developmental/reproductive toxicity
- Organ system toxicity (non-reproductive)
- Cancer
- Ecotoxicology
Metribuzin Exposure by State
Water utilities in 9 states have reported detecting Metribuzin in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with Metribuzin contamination | |
|---|---|---|
| Systems | Population | |
| Ohio | 1 | 380,000 |
| Delaware | 1 | 201,000 |
| California | 1 | 103,414 |
| Nebraska | 1 | 24,889 |
| Maine | 1 | 21,500 |
| Missouri | 1 | 4,800 |
| New York | 2 | 1,150 |
| Maryland | 1 | 184 |
| Washington | 1 | 151 |
| Total | 10 | 737,088 |
The Most Polluted Communities
10 water utilities reported detecting Metribuzin in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Metribuzin level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Iroquois Job Corps Center Medina, NY | 350 | 1 of 1 | 1 ppb (1 ppb) |
| 2 | City of Kearney Kearney, NE | 24,889 | 5 of 35 | 0.14 ppb (0 to 2.37 ppb) |
| 3 | Savannah Savannah, MO | 4,800 | 1 of 17 | 0.09 ppb (0 to 1.53 ppb) |
| 4 | Skyline Acres Inc Moses Lake, WA | 151 | 1 of 1 | 0.08 ppb (0.08 ppb) |
| 5 | Kennebec Water District Waterville, ME | 21,500 | 1 of 1 | 0.06 ppb (0.06 ppb) |
| 6 | Luke / Newpage Luke Mill Luke, MD | 184 | 3 of 11 | 0.05 ppb (0 to 0.2 ppb) |
| 7 | Rancho California Water District Temecula, CA | 103,414 | 1 of 37 | 0.03 ppb (0 to 1.1 ppb) |
| 8 | Mcwa, Genesee West Rochester, NY | 800 | 1 of 4 | 0.02 ppb (0 to 0.07 ppb) |
| 9 | City of Toledo Division of Water Toledo, OH | 380,000 | 1 of 16 | 0.01 ppb (0 to 0.21 ppb) |
| 10 | Artesian Water Company Newark, DE | 201,000 | 1 of 73 | < 0.01 ppb (0 to 0.33 ppb) |
Health Based Limits for Metribuzin
| 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. | 70 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. | 90 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. | 350 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. | 5000 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. | 5000 ppb |
Testing Summary for Metribuzin
| Are tests routinely required for Metribuzin by federal law? | No |
| Water suppliers reporting tests for Metribuzin (2004-2009): | 13,649 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2009): | 0.4 per year |
Endocrine disruption
| Type of concern: | Reference: |
| Human disruptor - strong evidence | European Commission on Endocrine Disruption |
| Limited evidence of endocrine disruption | Japanese National Institute of Health Sciences, 1997 |
| endocrine - weight of evidence unknown/unassessed/unreview: published lit review or major tox study | Illinois EPA Chemicals Associated with Endocrine System |
| endocrine - weight of evidence unknown/unassessed/unreview: published lit review or major tox study | Our Stolen Future Endocrine Disruptors |
Occupational hazards
| Type of concern: | Reference: |
| Allowed workplace exposures restricted to low doses | European Union - Classification & Labelling |
| Allowed workplace exposures restricted to moderate doses | RTECS®- TLV/BEI,2007 |
Developmental/reproductive toxicity
| Type of concern: | Reference: |
| Limited evidence of developmental toxicity | US EPA, 1788 |
Organ system toxicity (non-reproductive)
| Type of concern: | Reference: |
| Classified as toxic or harmful | European Union - Classification & Labelling |
| Limited evidence of gastrointestinal or liver toxicity | US EPA, 1788 |
| Limited evidence of kidney 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: |
| Cancer - not classifiable/not likely to be human carcinogen | EPA Integrated Risk Information System (IRIS) |
Ecotoxicology
| Type of concern: | Reference: |
| Wildlife and environmental toxicity | European Union - Classification & Labelling |
| Wildlife and environmental toxicity | Illinois EPA Chemicals Associated with Endocrine System |
Government, industry, academic studies and classifications
| government/industry list/academic study | appears on list as | classification(s) |
| European Union - Classification & Labelling | METRIBUZIN | •Harmful •Harmful if swallowed •Dangerous for the environment •Very toxic to aquatic organisms |
| Illinois EPA Chemicals Associated with Endocrine System | METRIBUZIN | •EPA: suspected endocrine disruptor |
| EPA Integrated Risk Information System (IRIS) | METRIBUZIN | •Group D: Not classifiable as to human carcinogenicity (EPA classification) |
| European Commission on Endocrine Disruption | METRIBUZIN | HH-CAT1;WF-CAT3b |
| National Library of Medicine HazMap | METRIBUZIN | •TLV (ACGIH) - Threshold limit value (ACGIH): 5 mg/m3; |
| Our Stolen Future Endocrine Disruptors | METRIBUZIN | • |
| EPA Toxic Release Inventory PBTs | METRIBUZIN | •Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs |
| US EPA, 1788 | METRIBUZIN | •Gastrointestinal or liver toxicity hazards: suspected |
| US EPA, 1788 | METRIBUZIN | •Kidney toxicity hazards: suspected |
| US EPA, 1788 | METRIBUZIN | •Developmental toxicity hazards: suspected |
| Japanese National Institute of Health Sciences, 1997 | METRIBUZIN | •Endocrine toxicity hazards: suspected |
| RTECS®- TLV/BEI,2007 | METRIBUZIN | • occupationally related - ACGIH TLV (human TWA) |
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. |
| Illinois EPA Chemicals Associated with Endocrine System | Illinois EPA (Illinois Environmental Protection Agency). 2000. Preliminary list of chemicals associated with endocrine system effects in animals and humans (*) or in vitro (+). In EPA (U.S. Environmental Protection Agency) 2000. Handbook for Non-Cancer Health Effects Valuation, Appendix C. |
| EPA Integrated Risk Information System (IRIS) | EPA (U.S. Environmental Protection Agency). 2008. Integrated Risk Information System (IRIS). Evidence for human carcinogenicity based on 1986-2005 guidelines. |
| European Commission on Endocrine Disruption | EU (European Union)- Strategy for Endocrine Disrupters 2007. Commision on endocrin disruption requested by the European Parliament in 1998. |
| National Library of Medicine HazMap | NLM (National Library of Medicine). 2006. HazMap — Occupational Exposure to Hazardous Agents. |
| Our Stolen Future Endocrine Disruptors | Colborn T, D Dumanoski, JP Myers. 2006. Widespread Pollutants with Endocrine-disrupting Effects. Updated from original listing in "Our Stolen Future" (1996). |
| EPA Toxic Release Inventory PBTs | EPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule. |
| 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 |
| 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 |
| 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, Proposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.-PEND |
| Scorecard.org Toxicity Information | Japanese National Institute of Health Sciences. Lists of Paradigmatic Chemicals. http://www.nihs.go.jp/hse/endocrine-e/paradigm/paradigm.html, Keith, L.H. (ed.). Environmental Endocrine Disruptors. John Wiley & Sons, NY. 1997. http://www.wileyeurope.com/cda/product/0,,0471191450%7Cdesc%7C3037,00.html, World Wildlife Fund. Our Stolen Future. Widespread Pollutants with Endocrine-disrupting Effects. http://www.ourstolenfuture.org/Basics/chemlist.htm. The WWF list is derived from references detailed at http://www.ourstolenfuture.org/Sources/chemsources.htm and was originally published in: Colborn, T., F.S. vom Saal, and A.M. Soto. Developmental Effects of Endocrine-Disrupting Chemicals In Wildlife and Humans. Environmental Health Perspectives 101(5): 378-384. 1993. |
| RTECS®- TLV/BEI,2007 | RTECS®- TLV/BEI,2007 |
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