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National Drinking Water Database

Nitrate & nitrite in Kentucky

Nitrate and nitrite enter water from fertilizer runoff, leaching from septic tanks, and erosion of natural deposits.

The Most Polluted Communities in Kentucky

78 water utilities reported detecting Nitrate & nitrite in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Nitrate & nitrite level

RankSystem Population Served Positive test results of total reported tests Average Level
1Gallatin County Water District
Sparta, KY
6,1611 of 18.04 ppm
(8.04 ppm)
2Warsaw Water Works
Warsaw, KY
2,3036 of 66.47 ppm
(5.6 to 7.7 ppm)
3Greater Fleming Co WT Comm
Vanceburg, KY
257 of 74.82 ppm
(3.5 to 9 ppm)
4Western Mason Co Water District
Dover, KY
3,2011 of 13.62 ppm
(3.62 ppm)
5Stella Trailer Park
Murray, KY
922 of 23.44 ppm
(3.24 to 3.64 ppm)
6Kevil Water Department
Kevil, KY
1,6975 of 52.76 ppm
(1.03 to 4.25 ppm)
7Franklin Water Works
Franklin, KY
13,5104 of 42.25 ppm
(1.2 to 3.1 ppm)
8Lewisport Municipal Water Works
Lewisport, KY
3,3828 of 82.19 ppm
(1.17 to 3.89 ppm)
9Barlow Water System
Barlow, KY
7001 of 12.1 ppm
(2.1 ppm)
10Edmonson Co Water District - Wax
Brownsville, KY
15,9521 of 12.04 ppm
(2.04 ppm)

Health Based Limits for Nitrate & nitrite

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.10 ppm
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.10 ppm
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.10 ppm

Violation Summary for Nitrate & nitrite in Kentucky

There are no violations reported for this contaminant in Kentucky