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National Drinking Water Database

Selenium (total) in Kentucky

Selenium is a naturally occurring element that contaminates water due to mining or petrolum refining, fly-ash from coal-burning power plants, and irrigation of arid farmland soils high in selenium. [read more]

The Most Polluted Communities in Kentucky

26 water utilities reported detecting Selenium (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Selenium (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Benham Water Plant
Benham, KY
1,0922 of 42 ppb
(0 to 5 ppb)
2Fulton Municipal Water System
Fulton, KY
5,8841 of 42 ppb
(0 to 8 ppb)
3Trapp Water Company
Burlington, KY
251 of 41.5 ppb
(0 to 6 ppb)
4London Utility Commission
London, KY
12,7051 of 41.25 ppb
(0 to 5 ppb)
5Lewisport Municipal Water Works
Lewisport, KY
3,3821 of 41.25 ppb
(0 to 5 ppb)
6Fleming-Neon Water Company
Neon, KY
3,9991 of 51.2 ppb
(0 to 6 ppb)
7Kevil Water Department
Kevil, KY
1,6971 of 41 ppb
(0 to 4 ppb)
8Western Mason Co Water District
Dover, KY
3,2011 of 21 ppb
(0 to 2 ppb)
9Garrison Quincy Heights Water District
Garrison, KY
3,5311 of 21 ppb
(0 to 2 ppb)
10Francis Water Company
Garrett, KY
1,0731 of 31 ppb
(0 to 3 ppb)

Health Based Limits for Selenium (total)

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
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.50 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.170 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 Selenium (total) in Kentucky

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

Violation TypeNumber of Violations
Failure to monitor regularly14