Know Your Environment. Protect Your Health.

Nitrate

Harris Woods Development

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.363 ppm110.363 ppm
20190.351 ppm110.351 ppm
20200.403 ppm110.403 ppm
20210.284 ppm110.284 ppm
20220.232 ppm110.232 ppm
20230.516 ppm110.516 ppm

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 Lab ID Result
2018-09-04NO3 344677-020.363 ppm
2019-09-17NO3 S0000150550.351 ppm
2020-08-31NO3 S0000273970.403 ppm
2021-07-01NO3 S0000423760.284 ppm
2022-08-24NO3 S0001008020.232 ppm
2023-08-22NO3 S0000055950.516 ppm