Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrate

Romeoville

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.136 ppm74ND - 0.756 ppm
20150.227 ppm74ND - 0.601 ppm
20160.216 ppm73ND - 0.636 ppm
20170.272 ppm74ND - 0.648 ppm
20180.208 ppm74ND - 0.564 ppm
20190.280 ppm84ND - 1.06 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 Lab ID Result
2014-05-211405B75-001BND
2014-05-211405B75-002B0.124 ppm
2014-05-211405B75-003BND
2014-05-211405B75-004BND
2014-05-211405B75-005B0.756 ppm
2014-05-211405B75-006B0.0631 ppm
2014-07-291407I08-001A0.01000 ppm
2015-05-201505G05-005B0.601 ppm
2015-05-201505G05-006BND
2015-05-201505G05-004BND
2015-05-201505G05-003B0.136 ppm
2015-05-201505G05-002B0.342 ppm
2015-07-091507758-001BND
2015-07-291507Q97-001B0.511 ppm
2016-04-271604J08-001B0.400 ppm
2016-04-271604J08-006BND
2016-04-271604J08-002BND
2016-04-271604J08-003BND
2016-04-271604J08-004BND
2016-04-271604J08-005B0.479 ppm
2016-07-201607H14-001B0.636 ppm
2017-05-031705342-003B0.192 ppm
2017-05-031705342-006BND
2017-05-031705342-005B0.616 ppm
2017-05-031705342-002BND
2017-05-031705342-001B0.449 ppm
2017-05-031705342-004BND
2017-07-191707E58-001B0.648 ppm
2018-04-191804E62-007BND
2018-04-191804E62-006B0.564 ppm
2018-04-191804E62-005BND
2018-04-191804E62-004BND
2018-04-191804E62-003B0.131 ppm
2018-04-191804E62-002B0.315 ppm
2018-07-181807C76-001B0.449 ppm
2019-04-161904D19-005B0.554 ppm
2019-04-161904D19-006BND
2019-04-161904D19-004BND
2019-04-161904D19-003BND
2019-04-161904D19-002B0.109 ppm
2019-04-161904D19-001B1.06 ppm
2019-07-171907E99-001B0.516 ppm
2019-12-091911G96-001ND