The Power of Information

National Drinking Water Database


Bromochloromethane in Alabama


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 Alabama

8 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)
1Coffee Springs Water System
Coffee Springs, AL
5161 of 11.46 ppb
(1.46 ppb)
2Limestone County Water System
Athens, AL
43,7881 of 50.83 ppb
(0 to 4.15 ppb)
3Evergreen Water Works
Evergreen, AL
5,0581 of 10.73 ppb
(0.73 ppb)
4Elba Water Works
Elba, AL
6,0152 of 50.46 ppb
(0 to 2 ppb)
5Mobile Area Water & Sewer System
Mobile, AL
274,9951 of 30.4 ppb
(0 to 1.2 ppb)
6Bayou LA Batre Utilities
Bayou La Batre, AL
8,1181 of 20.13 ppb
(0 to 0.27 ppb)
7Slocomb Water Works and Sewer Board
Slocomb, AL
3,6181 of 20.04 ppb
(0 to 0.09 ppb)
8Montgomery Water Works
Montgomery, AL
237,3901 of 110.03 ppb
(0 to 0.32 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 Alabama

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Alabama since 2004

Violation TypeNumber of Violations
Failure to monitor regularly4