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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Iodomethane


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

Iodomethane is an industrial chemical with a wide range of applications, including manufacture of pharmaceuticals and fire extinguisher products; it is also used as a pesticide/herbicide and occurs naturally in seafood.

 
Detected
Found above
health guidelines
Found above
legal limit
States
3
-
-
Water utilities
4
-
-
People Served
216,160
-
-

Health Concerns for Iodomethane:


Iodomethane Exposure by State

Water utilities in 3 states have reported detecting Iodomethane in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Iodomethane contamination
SystemsPopulation
Delaware1201,000
New Jersey114,000
Texas21,160
Total4216,160

The Most Polluted Communities

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

Ranked by highest average Iodomethane level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1City of Mount Calm
Mount Calm, TX
4471 of 21 ppb
(0 to 2 ppb)
2South River W Dept
South River, NJ
14,0001 of 30.83 ppb
(0 to 2.5 ppb)
3Artesian Water Company
Newark, DE
201,0001 of 1310.05 ppb
(0 to 6.6 ppb)
4Village of Surfside Beach
Freeport, TX
7131 of 50.04 ppb
(0 to 0.2 ppb)

Testing Summary for Iodomethane

Are tests routinely required for Iodomethane by federal law?No
Water suppliers reporting tests for Iodomethane (2004-2009):3,117 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.4 per year

Cancer

Type of concern: Reference:
Possible human carcinogen California EPA Proposition 65
Cancer - strong evidence Proposition 65 List of Carcinogens
Limited evidence of carcinogenicity European Union - Classification & Labelling
Possible carcinogen Environment Canada Domestic Substance List
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Mutation Research 1979
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Environmental Mutagenesis 1985
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- International Journal of Cancer 1977
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Mutation Research 1984
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- JNCI, Journal of the National Cancer Institute 1979
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- Archives of Toxicology 1980
Cancer - not classifiable/not likely to be human carcinogen Int'l Agency for Research on Cancer (IARC) - Carcinogens

Neurotoxicity

Type of concern: Reference:
Strong evidence of human neurotoxicity Chemicals known to be neurotoxic to humans
nervous system - weight of evidence unknown/unassessed/unreview: published lit review or major tox study National Library of Medicine HazMap

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Known human lung and skin toxicant European Union - Classification & Labelling
Known human respiratory toxicant EPA Hazardous Air Pollutants
Classified as a high human health priority Environment Canada Domestic Substance List
One or more animal studies show sense organ effects at very low doses RTECS®- National Technical Information Service 0629
Classified as expected to be toxic or harmful Environment Canada Domestic Substance List
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 US EPA, Air Risk Information Support Center
Limited evidence of kidney toxicity US EPA, Air Risk Information Support Center
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

Developmental/reproductive toxicity

Type of concern: Reference:
Human nervous system toxicant - moderate evidence Chemicals known to be neurotoxic to humans

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to low doses European Union - Classification & Labelling
Allowed workplace exposures restricted to moderate doses RTECS®- TLV/BEI,2007
Allowed workplace exposures restricted to high doses RTECS®- MSHA STANDARD-air: 3,166,1971
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Gen Indu): 29,1910 1994
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Construc): 29,1926 1994
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Shipyard): 29,1915 1993
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994

Irritation (skin, eyes, or lungs)

Type of concern: Reference:
Classified as irritant European Union - Classification & Labelling
Human skin irritant - moderate evidence National Library of Medicine HazMap
One or more animal studies show skin irritation at very low doses RTECS®- National Technical Information Service 0629
One or more animal studies show skin irritation at moderate doses RTECS®- British Journal of Industrial Medicine 1950

Persistence and bioaccumulation

Type of concern: Reference:
Not suspected to be bioaccumulative Environment Canada Domestic Substance List

Ecotoxicology

Type of concern: Reference:
Not suspected to be an environmental toxin Environment Canada Domestic Substance List



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingMETHYL IODIDE•Limited evidence of a carcinogenic effect
•Limited evidence of a carcinogenic effect
•Harmful
•Harmful in contact with skin
•Toxic
•Toxic by inhalation and ingestion
•Irritant (eyes, skin, or lungs)
•Irritating to respiratory system and skin
Environment Canada Domestic Substance ListMETHANE, IODO-•This chemical was deemed a high human health priority and was flagged by CEPA for further attention. The chemical is suspected to be carcinogenic and persistent.
European Union - Banned or Restricted in CosmeticsIODOMETHANE•Prohibited in EU cosmetics: must not form part of the composition of cosmetic products
EPA Hazardous Air PollutantsMETHYL IODIDE (IODOMETHANE)•Hazardous air pollutant under Clean Air Act
National Library of Medicine HazMapMETHYL IODIDE•Skin Designation (ACGIH) - Danger of cutaneous absorption (ACGIH): Yes;
•Dermatotoxin: Skin Burns;
•Hepatotoxin: Hepatotoxin, Secondary;
•Neurotoxin: Other CNS Neurotoxin;
•PEL (OSHA) - Permissible exposure limit (OSHA): 5 ppm;
•TIH - Toxic inhalation hazard (North American Emergency Response Guide): Yes;
•LC50 - Lethal concentration in 50% of animals tested: 1550 ppm;
•TLV (ACGIH) - Threshold limit value (ACGIH): 2 ppm;
•IDLH (NIOSH) - Immediately Dangerous to Life or Health: 100 ppm;
Int'l Agency for Research on Cancer (IARC) - CarcinogensMETHYL IODIDE•IARC Group 3 (no cancer link)
EPA Toxic Release Inventory PBTsIODOMETHANE•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
California EPA Proposition 65METHYL IODIDE•Carcinogen: California Proposition 65
US EPA, Air Risk Information Support CenterMETHYL IODIDE•Respiratory toxicity hazards: suspected
US EPA, Air Risk Information Support CenterMETHYL IODIDE•Kidney toxicity hazards: suspected
US EPA, Air Risk Information Support CenterMETHYL IODIDE•Skin or sense organ toxicity hazards: suspected
Proposition 65 List of CarcinogensMETHYL IODIDE•Cancer hazards: recognized
RTECS®- TLV/BEI,2007METHYL IODIDE• occupationally related - ACGIH TLV (human TWA)
RTECS®- Archives of Toxicology 1980METHYL IODIDE• mutagenic - Positive mutation assay: Mutation in Micro-organism (Escherichia coli )
• mutagenic - Positive mutation assay: DNA Damage (Escherichia coli )
RTECS®- British Journal of Industrial Medicine 1950METHYL IODIDE• skin - Primary skin irritant ( human )
RTECS®- Environmental Mutagenesis 1985METHYL IODIDE• mutagenic - Positive mutation assay: Mutation in Mammalian Somatic Cells (mouse lym)
RTECS®- International Journal of Cancer 1977METHYL IODIDE• mutagenic - Positive mutation assay: Morphological Transform (hamster emb)
RTECS®- JNCI, Journal of the National Cancer Institute 1979METHYL IODIDE• mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium )
• mutagenic - Positive mutation assay: DNA repair (Escherichia coli )
RTECS®- JNCI, Journal of the National Cancer Institute 1979METHYL IODIDE• mutagenic - Positive mutation assay: Gene Conversion and Mitotic Recombination (Saccharomyces cerevisiae )
RTECS®- MSHA STANDARD-air: 3,166,1971METHYL IODIDE• occupationally related - MSHA STANDARD-air (human TWA)
RTECS®- Mutation Research 1984METHYL IODIDE• mutagenic - Positive mutation assay: Mutation in Mammalian Somatic Cells (hamster ovr)
RTECS®- Mutation Research 1979METHYL IODIDE• mutagenic - Positive mutation assay: Mutation in Micro-organism (mouse lym)
RTECS®- National Technical Information Service 0629METHYL IODIDE• sense organ - Primary eye irritant (rabbit )
• skin - Primary skin irritant (rabbit )
RTECS®- OSHA PEL (Construc): 29,1926 1994METHYL IODIDE• occupationally related - OSHA PEL (Construc) (human TWA)
RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994METHYL IODIDE• occupationally related - OSHA PEL (Fed Cont) (human TWA)
RTECS®- OSHA PEL (Gen Indu): 29,1910 1994METHYL IODIDE• occupationally related - OSHA PEL (Gen Indu) (human TWA)
RTECS®- OSHA PEL (Shipyard): 29,1915 1993METHYL IODIDE• occupationally related - OSHA PEL (Shipyard) (human TWA)



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.
Environment Canada Domestic Substance ListEC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
European Union - Banned or Restricted in CosmeticsEC (European Commission of the European Union). 1999-2006. Enterprise Directorate-General Pharmaceuticals and Cosmetics. The rules governing cosmetic products in the European Union, Volume 1, "Cosmetics legislation."
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.
Int'l Agency for Research on Cancer (IARC) - CarcinogensIARC (International Agency for Research on Cancer). 2008. Overall Evaluations of Carcinogenicity to Humans, as evaluated in IARC Monographs Volumes 1-99 (a total of 935 agents, mixtures and exposures).
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
California EPA Proposition 65California EPA (California Environmental Protection Agency). 9/2008. Office of Environmental Health Hazard Assessment. Safe Drinking Water and Toxic Enforcement Act of 1986. Chemicals known to the State to cause cancer or reproductive toxicity.
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
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
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 InformationProposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.
RTECS®- TLV/BEI,2007RTECS®- TLV/BEI,2007
RTECS®- Archives of Toxicology 1980RTECS®- Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.32- 46,277,1980
RTECS®- British Journal of Industrial Medicine 1950RTECS®- British Journal of Industrial Medicine. (British Medical Journal, Box 560B, Kennebunkport, ME 04046) V.1- 7,122,1950
RTECS®- Environmental Mutagenesis 1985RTECS®- Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. 7,523,1985
RTECS®- International Journal of Cancer 1977RTECS®- International Journal of Cancer. (International Union Against Cancer, 3 rue du Conseil- General, 1205 Geneva, Switzerland) V.1- 19,642,1977
RTECS®- JNCI, Journal of the National Cancer Institute 1979RTECS®- JNCI, Journal of the National Cancer Institute. (Washington, DC) V.61-79, 1978-87. For publisher information, see JNCIEQ. 62,873,1979
RTECS®- JNCI, Journal of the National Cancer Institute 1979RTECS®- JNCI, Journal of the National Cancer Institute. (Washington, DC) V.61-79, 1978-87. For publisher information, see JNCIEQ. 62,901,1979
RTECS®- MSHA STANDARD-air: 3,166,1971RTECS®- MSHA STANDARD-air: 3,166,1971
RTECS®- Mutation Research 1984RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 136,137,1984
RTECS®- Mutation Research 1979RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 59,61,1979
RTECS®- National Technical Information Service 0629RTECS®- National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. OTS0570629
RTECS®- OSHA PEL (Construc): 29,1926 1994RTECS®- OSHA PEL (Construc): 29,1926.55,1994
RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994RTECS®- OSHA PEL (Fed Cont): 41,50-204.50,1994
RTECS®- OSHA PEL (Gen Indu): 29,1910 1994RTECS®- OSHA PEL (Gen Indu): 29,1910.1000,1994
RTECS®- OSHA PEL (Shipyard): 29,1915 1993RTECS®- OSHA PEL (Shipyard): 29,1915.1000,1993

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