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National Drinking Water Database


Total haloacetic acids (HAAs) in South Carolina


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 South Carolina

62 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)
1Ussc/Hidden Lake
West Columbia, SC
1354 of 455.08 ppb
(43.86 to 71.32 ppb)
2Belton-Honea Path W/A
Honea Path, SC
48412 of 1236.23 ppb
(24.24 to 48.23 ppb)
3Anderson Regional Wtr Sy
Anderson, SC
1012 of 1234.01 ppb
(20 to 54.32 ppb)
4City of Abbeville
Abbeville, SC
6,12012 of 1233.4 ppb
(14.6 to 63 ppb)
5City of North Augusta
N Augusta, SC
25,58122 of 2229.56 ppb
(17.84 to 46.48 ppb)
6Mohawk Industries
SC
4503 of 325.79 ppb
(20.29 to 30 ppb)
7Bjw&sa
Beaufort, SC
56,24249 of 4925.75 ppb
(11.82 to 44.5 ppb)
8Ussc/Bridgewater
West Columbia, SC
2352 of 225.52 ppb
(4.39 to 46.65 ppb)
9City of Aiken
Aiken, SC
36,45712 of 1225.3 ppb
(3.43 to 40.15 ppb)
10Isle of Palms W/S Comm
Isle Of Palms, SC
9,99312 of 1221.43 ppb
(7 to 45.2 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 South Carolina

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average11