Know Your Environment. Protect Your Health.

Nitrate

Aspen Hollow Homeowners Association

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.330 ppm110.330 ppm
2020ND10ND
20210.263 ppm32ND - 0.420 ppm
20220.430 ppm110.430 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
2018-12-12N1846041ND
2019-12-26N19579010.330 ppm
2020-08-25N2021491ND
2021-01-18N20590510.370 ppm
2021-08-16N2119381ND
2021-11-02N21415210.420 ppm
2022-01-10N21582110.430 ppm
2023-02-21N2286101ND