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National Drinking Water Database


Bromochloromethane in Delaware


Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and a fire extinguishing agent.

The Most Polluted Communities in Delaware

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

Ranked by highest average Bromochloromethane level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Frankford Water Department
Frankford, DE
9001 of 100.17 ppb
(0 to 1.66 ppb)
2Fox Hunter Crossing
Newark, DE
1,4701 of 110.03 ppb
(0 to 0.35 ppb)
3Millsboro Water Department
Millsboro, DE
2,3002 of 93< 0.01 ppb
(0 to 0.03 ppb)

Health Based Limits for Bromochloromethane

StandardDescriptionLevel
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.50 ppb
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.90 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.90 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.1000 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.50000 ppb

Violation Summary for Bromochloromethane in Delaware

There are no violations reported for this contaminant in Delaware