Know Your Environment. Protect Your Health.

Nitrate

Ashcreek Addition

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20190.542 ppm220.513 ppm - 0.570 ppm
20200.267 ppm220.0819 ppm - 0.453 ppm
20210.0315 ppm21ND - 0.0629 ppm
2022ND20ND
20230.0466 ppm21ND - 0.0932 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
2018-02-13Q1805886007ND
2018-02-13Q1805886008ND
2019-08-12Q19540050080.570 ppm
2019-08-12Q19540050090.513 ppm
2020-02-12Q20057770030.0819 ppm
2020-02-12Q20057770040.453 ppm
2021-07-08Q2117906011ND
2021-07-08Q21179060120.0629 ppm
2022-09-29Q2229353007ND
2022-09-29Q2229353009ND
2023-12-04Q2351279003ND
2023-12-04Q23512790060.0932 ppm