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National Drinking Water Database


Bromoform in Rhode Island


Bromoform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water. [read more]

The Most Polluted Communities in Rhode Island

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

Ranked by highest average Bromoform level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Portsmouth Water & Fire District
Portsmouth, RI
16,2701 of 12 ppb
(2 ppb)
2Naval Station, Newport
Newport, RI
7,8713 of 31.03 ppb
(0.9 to 1.3 ppb)
3Nasonville Water District
Nasonville, RI
1501 of 30.6 ppb
(0 to 1.8 ppb)
4Maplehill Mobile Home Park
Mapleville, RI
7501 of 40.35 ppb
(0 to 1.4 ppb)
5Westerly Water Department
Westerly, RI
38,0006 of 280.25 ppb
(0 to 2.6 ppb)
6Harrisville Fire District
Harrisville, RI
2,6423 of 240.24 ppb
(0 to 4.3 ppb)
7City of Newport
Newport, RI
43,8094 of 220.2 ppb
(0 to 1.7 ppb)
8Pascoag Utility District, Water Division
Pascoag, RI
3,5001 of 90.19 ppb
(0 to 1.7 ppb)
9RI Community Living & Support (Ladd
Exeter, RI
3532 of 170.16 ppb
(0 to 1.67 ppb)
10Kent County Water Authority
West Warwick, RI
70,0001 of 360.06 ppb
(0 to 2 ppb)

Health Based Limits for Bromoform

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.4.3 ppb
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.8 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.80 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.200 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.800 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.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.5000 ppb

Violation Summary for Bromoform in Rhode Island

There are no violations reported for this contaminant in Rhode Island