Know Your Environment. Protect Your Health.

Nitrate and nitrite

Harmony Estates Mobile Home Park

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

6

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
20210.180 ppm110.180 ppm
20220.360 ppm110.360 ppm
20230.190 ppm110.190 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

ppm = parts per million

All test results

Date Lab ID Result
2018-01-30A180564968ND
2019-01-089A01073-01ND
2020-02-250B02739-03ND
2021-03-291C03318-010.180 ppm
2022-02-082B00861-050.360 ppm
2023-04-243D03210-010.190 ppm