The Power of Information

National Drinking Water Database


Cyanide in Illinois


Cyanide is a chemical used in mining and steel/metal, plastic, and pesticide manufacturing; it is applied to roads as road salts, and small quantities occur naturally in some plants. [read more]

The Most Polluted Communities in Illinois

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

Ranked by highest average Cyanide level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1IL American-Terra Cotta
Creve Coeur, IL
6841 of 450 ppb
(0 to 200 ppb)
2Allendale
Allendale, IL
5281 of 425 ppb
(0 to 100 ppb)
3Ottawa
Ottawa, IL
18,3071 of 519.4 ppb
(0 to 97 ppb)
4Roxana
Roxana, IL
1,5001 of 116 ppb
(16 ppb)
5Royal Melbourne Homeowners Asn
Schaumburg, IL
3781 of 215 ppb
(0 to 30 ppb)
6Dover
Dover, IL
1691 of 27 ppb
(0 to 14 ppb)
7Lima
Basco, IL
1591 of 36.67 ppb
(0 to 20 ppb)
8Wadsworth Oaks Subdivision
Wadsworth, IL
1771 of 36.67 ppb
(0 to 20 ppb)
9Chrisman
Chrisman, IL
1,2001 of 36.67 ppb
(0 to 20 ppb)
10Des Plaines Mhp
Santa Ana, IL
3401 of 45.5 ppb
(0 to 22 ppb)

Health Based Limits for Cyanide

StandardDescriptionLevel
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.80 ppb
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.140 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.150 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.200 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.200 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.200 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.200 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.200 ppb

Violation Summary for Cyanide in Illinois

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

Violation TypeNumber of Violations
Failure to monitor regularly7