Know Your Environment. Protect Your Health.

Nitrate and nitrite

Sunland Estates Homeowners Association

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.330 ppm31ND - 0.990 ppm
20190.765 ppm220.0900 ppm - 1.44 ppm
2020N/A00N/A
20210.600 ppm31ND - 1.80 ppm
2022ND40ND
2023N/A00N/A

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
2018-01-10ND
2018-09-170.990 ppm
2018-09-17ND
2019-09-290.0900 ppm
2019-09-301.44 ppm
2021-03-294090914ND
2021-10-264193388ND
2021-12-2942194551.80 ppm
2022-03-234256476ND
2022-03-234256475ND
2022-08-024325313ND
2022-10-254361017ND