The Power of Information

National Drinking Water Database

Hexachlorocyclopentadiene in North Carolina

Hexachlorocyclopentadiene is an industrial pollutant discharged from chemical factories. [read more]

The Most Polluted Communities in North Carolina

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

Ranked by highest average Hexachlorocyclopentadiene level

RankSystem Population Served Positive test results of total reported tests Average Level
1Currituck Club Water Company
Corolla, NC
8691 of 110.17 ppb
(0 to 1.86 ppb)
2Keltic Meadows Iii
Gastonia, NC
661 of 10.13 ppb
(0.13 ppb)
3City of Rockingham
Rockingham, NC
10,7025 of 150.05 ppb
(0 to 0.34 ppb)
4North River Water System
Beaufort, NC
2,1852 of 110.04 ppb
(0 to 0.29 ppb)
5City of Durham
Durham, NC
225,7141 of 90.04 ppb
(0 to 0.34 ppb)
6Snug Harbor ON Nelson Bay
Sea Level, NC
1081 of 40.03 ppb
(0 to 0.13 ppb)
7Lake Road Mhp
Newport, NC
402 of 120.03 ppb
(0 to 0.22 ppb)
8City of Lumberton
Lumberton, NC
26,0001 of 70.03 ppb
(0 to 0.21 ppb)
9Enfield Water System
Enfield, NC
2,2781 of 50.02 ppb
(0 to 0.12 ppb)
10City of Randleman
Randleman, NC
5,9871 of 70.02 ppb
(0 to 0.14 ppb)

Health Based Limits for Hexachlorocyclopentadiene

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.40 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.50 ppb
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.50 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.50 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.200 ppb

Violation Summary for Hexachlorocyclopentadiene in North Carolina

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

Violation TypeNumber of Violations
Failure to monitor regularly209