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National Drinking Water Database


Total haloacetic acids (HAAs) in Virginia


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 Virginia

494 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)
1Lake Caroline Wtp
Ruther Glen, VA
3,37013 of 13137.74 ppb
(1.6 to 180 ppb)
2Tightsqueeze - (Pcsa)
VA
381 of 186.2 ppb
(86.2 ppb)
3Campbell County East System
VA
805 of 567.2 ppb
(37 to 91 ppb)
4Town of Gordonsville
Gordonsville, VA
1,80023 of 2363.33 ppb
(37.25 to 104 ppb)
5High Point Subdivision
Bedford, VA
6489 of 961.6 ppb
(32.8 to 98.8 ppb)
6East Carters Valley
Kingsport, VA
24015 of 1561.07 ppb
(29 to 120 ppb)
7Town of Louisa
Louisa, VA
1,5006 of 660.85 ppb
(44.45 to 70.39 ppb)
8Plum Creek
Christiansburg, VA
1,65311 of 1160.76 ppb
(33 to 138.7 ppb)
9Spring Valley Subdivision
Kingsport, VA
18914 of 1460.64 ppb
(18 to 144 ppb)
10Town of Orange
Orange, VA
4,50021 of 2160.53 ppb
(31 to 148 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 Virginia

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

Violation TypeNumber of Violations
Monitoring and Reporting Disinfection Byproduct Rule118
Over maximum contaminant level, Average73