Know Your Environment. Protect Your Health.

Nitrate

Wee Wood Park

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0500 ppm110.0500 ppm
2019ND10ND
2020ND10ND
2021ND10ND
20220.103 ppm110.103 ppm
2023ND10ND

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
2018-02-272018 NO3 WEE WOOD0.0500 ppm
2019-02-19NO3 19 WEE WOODND
2020-02-19NO3 20 WEE WOODND
2021-02-09NO3 21 WEE WOODND
2022-03-22NO3 22 WEE WOOD0.103 ppm
2023-02-14NO3 23 WEE WOODND