EWG's Tap Water Database — 2019 UPDATE



Citrus County Utilities/Charles A. Black

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20120.567 ppm330.1000 ppm - 1.40 ppm
20130.667 ppm330.120 ppm - 1.50 ppm
20140.560 ppm330.150 ppm - 1.10 ppm
20150.727 ppm330.0800 ppm - 1.40 ppm
20160.627 ppm330.120 ppm - 1.20 ppm
20170.617 ppm660.1000 ppm - 1.50 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Result
2012-04-030.1000 ppm
2012-04-030.200 ppm
2012-04-031.40 ppm
2013-04-081.50 ppm
2013-04-080.380 ppm
2013-04-080.120 ppm
2014-04-090.430 ppm
2014-04-091.10 ppm
2014-04-090.150 ppm
2015-04-010.700 ppm
2015-04-010.0800 ppm
2015-04-011.40 ppm
2016-04-141.20 ppm
2016-04-140.120 ppm
2016-04-140.560 ppm
2017-04-130.380 ppm
2017-04-130.110 ppm
2017-04-131.30 ppm
2017-05-241.50 ppm
2017-05-250.1000 ppm
2017-05-250.310 ppm