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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Hexachlorocyclopentadiene


Status: Regulated - EPA has established a maximum legal limit in tapwater for this contaminant.

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

 
Detected
Found above
health guidelines
Found above
legal limit
States
24
1
1
Water utilities
137
1
1
People Served
10,595,099
5,248
5,248

Health Concerns for Hexachlorocyclopentadiene:


Hexachlorocyclopentadiene Exposure by State

Water utilities in 24 states have reported detecting Hexachlorocyclopentadiene in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Hexachlorocyclopentadiene contaminationWater suppliers reporting Hexachlorocyclopentadiene above health-based limits
SystemsPopulationSystemsPopulation
New York416,99815,248
Arizona32,055,00000
Massachusetts32,045,50000
Maryland41,860,38400
Nevada11,181,26300
Virginia1755,61700
Oregon2539,35000
Florida14519,70800
Kentucky42511,81300
North Carolina14304,97000
Delaware2201,32000
Idaho1185,78700
California1150,25300
Arkansas12104,35800
Montana348,22500
New Hampshire541,10000
Hawaii428,78000
Indiana518,02300
Maine410,40500
Texas47,81200
Connecticut33,72600
Washington12,97000
Illinois11,31300
Pennsylvania342400
Total13710,595,09915,248

The Most Polluted Communities

137 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
(Range)
1Penn Yan Village
Penn Yan, NY
5,2481 of 333.33 ppb
(0 to 100 ppb)
2Doe Valley Utilities Inc
Brandenburg, KY
2,3431 of 42.5 ppb
(0 to 10 ppb)
3Keenhold Assoc Water Sys
PA
401 of 12 ppb
(2 ppb)
4Georgetown Municipal Water Service
Georgetown, KY
37,0431 of 52 ppb
(0 to 10 ppb)
5Beattyville Water Works
Beattyville, KY
7,3521 of 61.67 ppb
(0 to 10 ppb)
6Salyersville Municipal Water
Salyersville, KY
3,2502 of 121.67 ppb
(0 to 10 ppb)
7Burnside Water Company
Burnside, KY
2,5382 of 141.43 ppb
(0 to 10 ppb)
8Richmond Utilities
Richmond, KY
39,0021 of 71.43 ppb
(0 to 10 ppb)
9Columbia Utilities Commission
Columbia, KY
5,4022 of 151.33 ppb
(0 to 10 ppb)
10Madisonville Light & Water
Madisonville, KY
31,2251 of 81.25 ppb
(0 to 10 ppb)

Health Based Limits for Hexachlorocyclopentadiene

StandardDescriptionLevel
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

Testing Summary for Hexachlorocyclopentadiene

Are tests routinely required for Hexachlorocyclopentadiene by federal law?Yes
Water suppliers reporting tests for Hexachlorocyclopentadiene (2004-2009):20,213 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.4 per year

Violation Summary for Hexachlorocyclopentadiene

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

Maximum Contaminant Level Exceedance Violations0
Monitoring Violations1,814
Reporting Violations0

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Known human respiratory toxicant EPA Hazardous Air Pollutants
One or more animal studies show sense organ effects at very low doses RTECS®- Velsicol Chemical Corp 1976
Classified as expected to be toxic or harmful Environment Canada Domestic Substance List
One or more animal studies show sense organ effects at low doses RTECS®- "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J 1986
Classified as toxic or harmful European Union - Classification & Labelling
Limited evidence of gastrointestinal or liver toxicity National Library of Medicine HazMap
Limited evidence of respiratory toxicity Agency for Toxic Substances and Disease Registry, 2004
Limited evidence of kidney toxicity Agency for Toxic Substances and Disease Registry, 2004
Limited evidence of sense organ toxicity US EPA, Air Risk Information Support Center
One or more animal studies show toxic via inhalation effects at moderate doses (low dose studies may be unavailable for this ingredient) National Library of Medicine HazMap
One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient) EPA Toxic Release Inventory PBTs

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to very low doses European Union - Classification & Labelling
Allowed workplace exposures restricted to very low doses RTECS®- TLV/BEI,2007
Allowed workplace exposures restricted to low doses European Union - Classification & Labelling

Persistence and bioaccumulation

Type of concern: Reference:
Persistent, bioaccumulative in wildlife Canada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)
Not suspected to be bioaccumulative Environment Canada Domestic Substance List

Developmental/reproductive toxicity

Type of concern: Reference:
Limited evidence of developmental toxicity US EPA, 9204
Limited evidence of reproductive toxicity US EPA, 9204

Cancer

Type of concern: Reference:
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Mutation Research 2006
Not likely to be carcinogenic in humans EPA Integrated Risk Information System (IRIS)

Irritation (skin, eyes, or lungs)

Type of concern: Reference:
Human skin irritant - moderate evidence National Library of Medicine HazMap
One or more animal studies show skin irritation at very low doses RTECS®- AMA Archives of Industrial Health 1955
One or more animal studies show skin irritation at very low doses RTECS®- Velsicol Chemical Corp 1976
One or more animal studies show skin irritation at very low doses RTECS®- National Technical Information Service 7036
One or more animal studies show skin irritation at moderate doses RTECS®- AMA Archives of Industrial Health 1955

Ecotoxicology

Type of concern: Reference:
Wildlife and environmental toxicity European Union - Classification & Labelling
Wildlife and environmental toxicity EPA Clean Water Act - Priority Pollutants
Suspected to be an environmental toxin and be persistent or bioaccumulative Environment Canada Domestic Substance List
Suspected to be an environmental toxin Environment Canada Domestic Substance List

Miscellaneous

Type of concern: Reference:
Occupational hazards related to handling European Union - Classification & Labelling



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingHEXACHLOROCYCLOPENTADIENE•Very toxic
•Very toxic by inhalation
•Toxic
•Toxic in contact with skin
•Harmful
•Harmful if swallowed
•Corrosive
•Causes burns
•Dangerous for the environment
•Very toxic to aquatic organisms
EPA Clean Water Act - Priority PollutantsHEXACHLOROCYCLOPENTADIENE•Priority water pollutant under the Clean Water Act
Environment Canada Domestic Substance List1,3-CYCLOPENTADIENE, 1,2,3,4,5,5-HEXACHLORO-•This chemical was flagged for further attention by CEPA due to suspected aquatic toxicity and persistence.
EPA Integrated Risk Information System (IRIS)HEXACHLOROCYCLOPENTADIENE (HCCPD)•Group E: Evidence of non-carcinogenicity for humans (EPA classification)
EPA Integrated Risk Information System (IRIS)HEXACHLOROCYCLOPENTADIENE (HCCPD)•Not likely to be carcinogenic in humans (EPA classification)
EPA Hazardous Air PollutantsHEXACHLOROCYCLOPENTADIENE•Hazardous air pollutant under Clean Air Act
National Library of Medicine HazMapHEXACHLOROCYCLOPENTADIENE•Dermatotoxin: Skin Burns;
•Toxic Pneumonitis: Yes;
•Hepatotoxin: Hepatotoxin, Secondary;
•TIH - Toxic inhalation hazard (North American Emergency Response Guide): Yes;
•TLV (ACGIH) - Threshold limit value (ACGIH): 0.01 ppm;
•Flammability (NFPA) - NFPA flammability code: 0 = will not burn; 1 = must be preheated; 2 = high ambient temp required; 3 = may ignite at ambient temp; 4 = burn readily: 0: will not burn;
•Odor Threshold Low - The lowest concentration at which a substance can be detected or recognized using the sense of smell: 0.15 ppm;
Canada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)1,2,3,4,5,5-HEXACHLORO-1,3-CYCLOPENTADIENE•Bioaccumulative toxicant under Canada's Accelerated Reduction/Elimination of Toxics program - targeted for elimination or reduction
EPA Toxic Release Inventory PBTs1,2,3,4,5,5-HEXACHLORO-1,3-CYCLOPENTADIENE•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
Agency for Toxic Substances and Disease Registry, 2004HEXACHLOROCYCLOPENTADIENE•Respiratory toxicity hazards: suspected
Agency for Toxic Substances and Disease Registry, 2004HEXACHLOROCYCLOPENTADIENE•Kidney toxicity hazards: suspected
US EPA, Air Risk Information Support CenterHEXACHLOROCYCLOPENTADIENE•Skin or sense organ toxicity hazards: suspected
US EPA, 9204HEXACHLOROCYCLOPENTADIENE•Developmental toxicity hazards: suspected
US EPA, 9204HEXACHLOROCYCLOPENTADIENE•Reproductive toxicity hazards: suspected
RTECS®- TLV/BEI,2007HEXACHLOROCYCLOPENTADIENE• occupationally related - ACGIH TLV (human TWA)
RTECS®- "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J 1986HEXACHLOROCYCLOPENTADIENE• sense organ - Primary eye irritant (rabbit )
RTECS®- AMA Archives of Industrial Health 1955HEXACHLOROCYCLOPENTADIENE• skin - Primary skin irritant (monkey )
RTECS®- Mutation Research 2006HEXACHLOROCYCLOPENTADIENE• mutagenic - Positive mutation assay: Cytogenetic Analysis (hamster oth)
RTECS®- National Technical Information Service 7036HEXACHLOROCYCLOPENTADIENE• skin - Primary skin irritant (rabbit )
RTECS®- Velsicol Chemical Corp 1976HEXACHLOROCYCLOPENTADIENE• sense organ - Primary eye irritant (rabbit )
• skin - Primary skin irritant (rabbit )



references

government/industry list/academic study reference
European Union - Classification & LabellingCPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
EPA Clean Water Act - Priority Pollutants
Environment Canada Domestic Substance ListEC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
EPA Integrated Risk Information System (IRIS)EPA (U.S. Environmental Protection Agency). 2008. Integrated Risk Information System (IRIS). Evidence for human carcinogenicity based on 1986-2005 guidelines.
EPA Hazardous Air PollutantsEPA (U.S. Environmental Protection Agency). 2005. Office of Air. The 112(b)1 Hazardous Air Pollutants List (as modified). Last modified: 12 Dec 2005.
National Library of Medicine HazMapNLM (National Library of Medicine). 2006. HazMap — Occupational Exposure to Hazardous Agents.
Canada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)EC (Environment Canada). 1994. Accelerated Reduction/Elimination of Toxics (ARET). ARET substance list of persistent, bioaccumulative and toxic chemicals.
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
Scorecard.org Toxicity InformationAgency for Toxic Substances and Disease Registry. Minimal risk Levels for Hazardous Substances. January 2004. http://www.atsdr.cdc.gov/mrls.html, US EPA, Air Risk Information Support Center. Health Effects Notebook for Hazardous Air Pollutants. http://www.epa.gov/ttnatw01/hlthef/hapindex.html, A Relational Database of Hazardous Chemicals and Occupational Diseases. Browse Haz-Map by Adverse Effects http://hazmap.nlm.nih.gov/hazmapadv.html, California EPA, Office of Environmental Health Hazard Assessment. Air Toxics Hot Spots Program Risk Assessment Guidelines, Part III: Technical Support Document 'Determination of Noncancer Chronic Reference Exposure Levels'. Includes all Chronic Reference Exposure Levels (CRELs) adopted by OEHHA as of August 2003 (http://www.oehha.ca.gov/air/chronic_rels/AllChrels.html, plus draft CRELS proposed through March 2004 (http://www.oehha.ca.gov/air/chronic_rels/index.html., National Institute for Occupational Safety and Health's Registry of Toxic Effects of Chemical Substances. See Environmental Defense's Suspect Hazard Identification documentation.
Scorecard.org Toxicity InformationAgency for Toxic Substances and Disease Registry. Minimal risk Levels for Hazardous Substances. January 2004. http://www.atsdr.cdc.gov/mrls.html, National Institute for Occupational Safety and Health's Registry of Toxic Effects of Chemical Substances. See Environmental Defense's Suspect Hazard Identification documentation.
Scorecard.org Toxicity InformationUS EPA, Air Risk Information Support Center. Health Effects Notebook for Hazardous Air Pollutants. http://www.epa.gov/ttnatw01/hlthef/hapindex.html, A Relational Database of Hazardous Chemicals and Occupational Diseases. Browse Haz-Map by Adverse Effects http://hazmap.nlm.nih.gov/hazmapadv.html
Scorecard.org Toxicity InformationUS EPA. Roadmaps to Sources of Information on Chemicals Listed in the Emergency Planning Community and Community Right-to-Know Act (Also Known as SARA Title 3), Section 313 Toxic Release Inventory (for Microcomputers). (Report Number EPADFDK92040). 1991. Data file distributed in 2 diskettes by Office of Pollution, Prevention, and Toxics, Environmental Protection Agency, Washington, DC. NOTE: Datasource no longer being maintained by EPA; not currently available online.
Scorecard.org Toxicity InformationUS EPA. Roadmaps to Sources of Information on Chemicals Listed in the Emergency Planning Community and Community Right-to-Know Act (Also Known as SARA Title 3), Section 313 Toxic Release Inventory (for Microcomputers). (Report Number EPADFDK92040). 1991. Data file distributed in 2 diskettes by Office of Pollution, Prevention, and Toxics, Environmental Protection Agency, Washington, DC. NOTE: Datasource no longer being maintained by EPA; not currently available online.
RTECS®- TLV/BEI,2007RTECS®- TLV/BEI,2007
RTECS®- "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J 1986RTECS®- "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 -,149,1986
RTECS®- AMA Archives of Industrial Health 1955RTECS®- AMA Archives of Industrial Health. (Chicago, IL) V.11-21, 1955-60. For publisher information, see AEHLAU. 11,459,1955
RTECS®- Mutation Research 2006RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 608,28,2006
RTECS®- National Technical Information Service 7036RTECS®- National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. OTS0537036
RTECS®- Velsicol Chemical Corp 1976RTECS®- Velsicol Chemical Corp., Product Bulletin. (341 E. Ohio St., Chicago, IL 60611) #50101-2,1976

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