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National Drinking Water Database


Metolachlor in Texas


Metolachlor is an herbicide applied on corn, soybeans, peanuts, cotton and pod crops. [read more]

The Most Polluted Communities in Texas

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

Ranked by highest average Metolachlor level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Sunset Canyon Water Moore Estates
Mansfield, TX
691 of 10.66 ppb
(0.66 ppb)
2Crosby Mud
Crosby, TX
3,1621 of 70.54 ppb
(0 to 3.8 ppb)
3City of Corsicana
Corsicana, TX
24,4855 of 90.53 ppb
(0 to 2.47 ppb)
4City of Taylor
Taylor, TX
15,1971 of 20.14 ppb
(0 to 0.28 ppb)
5Deaf Smith County Fwsd 1
Hereford, TX
2752 of 30.13 ppb
(0 to 0.23 ppb)
6Bra Mor Mobile Home Park
Minneapolis, TX
5041 of 10.13 ppb
(0.13 ppb)
7City of Ennis
Ennis, TX
16,6593 of 60.09 ppb
(0 to 0.25 ppb)
8City of Cameron
Cameron, TX
5,6352 of 120.07 ppb
(0 to 0.54 ppb)
9Winkler Wsc
Streetman, TX
5282 of 40.07 ppb
(0 to 0.15 ppb)
10Aquilla Water Supply District
Hillsboro, TX
251 of 60.06 ppb
(0 to 0.38 ppb)

Health Based Limits for Metolachlor

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.700 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.700 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.2000 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.2000 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.3500 ppb

Violation Summary for Metolachlor in Texas

There are no violations reported for this contaminant in Texas