The Power of Information

National Drinking Water Database


Thiobencarb (Bolero) in California


Thiobencarb is an herbicide used in rice production.

The Most Polluted Communities in California

1 water utilities reported detecting Thiobencarb (Bolero) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Thiobencarb (Bolero) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Rancho California Water District
Temecula, CA
103,4141 of 430.03 ppb
(0 to 1.1 ppb)

Health Based Limits for Thiobencarb (Bolero)

StandardDescriptionLevel
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.70 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.70 ppb

Violation Summary for Thiobencarb (Bolero) in California

There are no violations reported for this contaminant in California