Know Your Environment. Protect Your Health.

Nitrate

Deerfield Water System, Llc

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

32

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.692 ppm990.250 ppm - 1.30 ppm
20190.660 ppm880.388 ppm - 0.932 ppm
20200.742 ppm220.666 ppm - 0.818 ppm
20210.619 ppm76ND - 1.08 ppm
20220.868 ppm770.311 ppm - 2.26 ppm
2023N/A00N/A

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

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
2018-12-260.580 ppm
2018-12-260.625 ppm
2018-12-261.30 ppm
2018-12-260.922 ppm
2018-12-260.516 ppm
2018-12-261.26 ppm
2018-12-260.250 ppm
2018-12-260.382 ppm
2018-12-260.391 ppm
2019-12-110.388 ppm
2019-12-110.932 ppm
2019-12-110.932 ppm
2019-12-110.932 ppm
2019-12-110.388 ppm
2019-12-110.388 ppm
2019-12-110.388 ppm
2019-12-110.932 ppm
2020-12-310.818 ppm
2020-12-310.666 ppm
2021-12-280.584 ppm
2021-12-290.520 ppm
2021-12-290.604 ppm
2021-12-29ND
2021-12-291.08 ppm
2021-12-290.537 ppm
2021-12-291.01 ppm
2022-06-272.26 ppm
2022-06-270.421 ppm
2022-06-270.311 ppm
2022-06-270.901 ppm
2022-06-270.485 ppm
2022-06-271.24 ppm
2022-06-270.458 ppm