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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Propachlor


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

Propachlor is a carcinogenic herbicide that had been historically used on corn and sorghum. [read more]

 
Detected
Found above
health guidelines
Found above
legal limit
States
4
1
-
Water utilities
6
2
-
People Served
230,978
219
-

Health Concerns for Propachlor:


Propachlor Exposure by State

Water utilities in 4 states have reported detecting Propachlor in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Propachlor contaminationWater suppliers reporting Propachlor above health-based limits
SystemsPopulationSystemsPopulation
New York31,0192219
Delaware1201,00000
Arkansas128,77500
Maryland118400
Total6230,9782219

The Most Polluted Communities

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

Ranked by highest average Propachlor level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Sandy Acres Mobile Home Park
Plattsburgh, NY
331 of 150 ppb
(50 ppb)
2Shircliff Court
Grand Isle, NY
1861 of 316.67 ppb
(0 to 50 ppb)
3Texarkana Water Utilities
Texarkana, AR
28,7751 of 30.07 ppb
(0 to 0.22 ppb)
4Luke / Newpage Luke Mill
Luke, MD
1843 of 110.05 ppb
(0 to 0.2 ppb)
5Mcwa, Genesee West
Rochester, NY
8001 of 40.04 ppb
(0 to 0.15 ppb)
6Artesian Water Company
Newark, DE
201,0001 of 85< 0.01 ppb
(0 to 0.18 ppb)

Health Based Limits for Propachlor

StandardDescriptionLevel
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.1 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.1 ppb-100 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.100 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.500 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.500 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

Testing Summary for Propachlor

Are tests routinely required for Propachlor by federal law?No
Water suppliers reporting tests for Propachlor (2004-2009):13,789 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.4 per year

Cancer

Type of concern: Reference:
Possible human carcinogen California EPA Proposition 65
Cancer - strong evidence Proposition 65 List of Carcinogens
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Mutation Research 1997
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Eksperimentalna Meditsina i Morfologiya 1979
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Cytology and Genetics (English Translation) 1980

Allergies/immunotoxicity

Type of concern: Reference:
Limited evidence of immune system toxicity or allergies European Union - Classification & Labelling
Limited evidence of immune system toxicity or allergies European Economic Community, 1991

Occupational hazards

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

Developmental/reproductive toxicity

Type of concern: Reference:
Limited evidence of developmental toxicity US EPA, 1788

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
Limited evidence of sense organ toxicity European Economic Community
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

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 & LabellingPROPACHLOR•Harmful
•Harmful if swallowed
•Irritant (eyes, skin, or lungs)
•Irritating to eyes
•May cause sensitization by skin contact
•Dangerous for the environment
•Very toxic to aquatic organisms
EPA Toxic Release Inventory PBTsPROPACHLOR•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
California EPA Proposition 65PROPACHLOR•Carcinogen: California Proposition 65
European Economic CommunityPROPACHLOR•Skin or sense organ toxicity hazards: suspected
European Economic Community, 1991PROPACHLOR•Immunotoxicity hazards: suspected
US EPA, 1788PROPACHLOR•Developmental toxicity hazards: suspected
Proposition 65 List of CarcinogensPROPACHLOR•Cancer hazards: recognized
RTECS®- Cytology and Genetics (English Translation) 1980PROPACHLOR• mutagenic - Positive mutation assay: Cytogenetic Analysis (mouse orl)
RTECS®- Eksperimentalna Meditsina i Morfologiya 1979PROPACHLOR• mutagenic - Positive mutation assay: other mutation test systems (rat orl)
• mutagenic - Positive mutation assay: sperm (rat orl)
RTECS®- Mutation Research 1997PROPACHLOR• mutagenic - Positive mutation assay: Sister Chromatid Exchange ( human lym)



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.
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
California EPA Proposition 65California EPA (California Environmental Protection Agency). 9/2008. Office of Environmental Health Hazard Assessment. Safe Drinking Water and Toxic Enforcement Act of 1986. Chemicals known to the State to cause cancer or reproductive toxicity.
Scorecard.org Toxicity InformationEuropean Economic Community. Sensitizing Substances in the EEC List of Dangerous Substances. Annex I to Council Directive 67/548/EEC. http://www.kemi.se/default_eng.cfm?page=klass_mark/klasshem_eng.htm
Scorecard.org Toxicity InformationEuropean Economic Community. Sensitizing Substances in the EEC List of Dangerous Substances. Annex I to Council Directive 67/548/EEC. http://www.kemi.se/default_eng.cfm?page=klass_mark/klasshem_eng.htm, Nordic Council of Ministers (Nordic Allergy Project). Kriteriedokumenter fra nordisk allergiprojekt - vurdering af 50 kemiske stoffers evne til at forarsage allergi, en litteraturgennemgang. Nord 1991:51. Copenhagen, 1991.
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
Scorecard.org Toxicity InformationProposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.
RTECS®- Cytology and Genetics (English Translation) 1980RTECS®- Cytology and Genetics (English Translation). Translation of TGANAK. (Allerton Press Inc., 150 Fifth Ave., New York, NY 10011) V.8- 14(6),38,1980
RTECS®- Eksperimentalna Meditsina i Morfologiya 1979RTECS®- Eksperimentalna Meditsina i Morfologiya. (Hemus, Blvd. Russki 6, Sofia, Bulgaria) V.1- 1962- 18,35,1979
RTECS®- Mutation Research 1997RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 395,159,1997

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