The Power of Information

National Drinking Water Database

Hexachlorocyclopentadiene in Florida

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

The Most Polluted Communities in Florida

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
1Horseshoe Beach Wtp
Horseshoe Beach, FL
8203 of 70.59 ppb
(0 to 1.6 ppb)
2Okeechobee Utility Authority
Okeechobee, FL
20,0001 of 80.18 ppb
(0 to 1.4 ppb)
3Town of Cross City
Cross City, FL
2,8502 of 70.14 ppb
(0 to 0.84 ppb)
4Everglades City
Everglades City, FL
2,5002 of 50.12 ppb
(0 to 0.33 ppb)
5Town of Fort White
Fort White, FL
5501 of 80.06 ppb
(0 to 0.48 ppb)
6Indiantown Company Inc.
Indiantown, FL
5,0001 of 90.02 ppb
(0 to 0.22 ppb)
7San Sebastian Woods
Micco, FL
561 of 60.02 ppb
(0 to 0.12 ppb)
8Bay County Water System
Panama City, FL
11,5882 of 40.02 ppb
(0 to 0.04 ppb)
9Fern Crest Utilities Inc.
Ft Lauderdale, FL
5,5001 of 7< 0.01 ppb
(0 to 0.06 ppb)
10Boca Raton Wtp
Boca Raton, FL
115,9301 of 4< 0.01 ppb
(0 to 0.02 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 Florida

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

Violation TypeNumber of Violations
Failure to monitor regularly3