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National Drinking Water Database


Total haloacetic acids (HAAs) in Vermont


Total haloacetic acids refers to the sum of the concentrations of five related disinfection byproducts in a water sample: dichloroacetic acid, trichloroacetic acid, monochloroacetic acid, monobromoacetic acid and dibromoacetic acid. [read more]

The Most Polluted Communities in Vermont

113 water utilities reported detecting Total haloacetic acids (HAAs) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Total haloacetic acids (HAAs) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Catamount Bolton Water and Sewer
Bolton, VT
1,00013 of 1374.57 ppb
(49 to 147 ppb)
2North Hero Water System
North Hero, VT
1,80014 of 1571.57 ppb
(0 to 150 ppb)
3Rutland Town Mendon F D 2
Rutland Town, VT
1027 of 764.29 ppb
(30 to 90 ppb)
4Rutland Town Fire District 11
VT
295 of 561.92 ppb
(20 to 117 ppb)
5West Road Mhp
Bennington, VT
10511 of 1160.45 ppb
(31 to 110 ppb)
6Proctor Water Dept
Proctor, VT
2,20011 of 1159.92 ppb
(25.5 to 110 ppb)
7Willows Mhp
Bennington, VT
4811 of 1159.5 ppb
(10 to 110 ppb)
8Gore Road Mhp
Bennington, VT
10011 of 1157.73 ppb
(26 to 90 ppb)
9Bennington Water Dept
Bennington, VT
12,00013 of 1354.93 ppb
(21.43 to 112.86 ppb)
10Rutland Town Water Supply
Rutland Town, VT
1,50012 of 1253.67 ppb
(30 to 90 ppb)

Health Based Limits for Total haloacetic acids (HAAs)

StandardDescriptionLevel
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.0.7 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.60 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.70 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.70 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.450 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.5200 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.5200 ppb

Violation Summary for Total haloacetic acids (HAAs) in Vermont

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average168
Monitoring and Reporting Disinfection Byproduct Rule78