Know Your Environment. Protect Your Health.

Nitrate and nitrite

Ventura 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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.310 ppm110.310 ppm
20190.280 ppm110.280 ppm
20200.250 ppm110.250 ppm
20210.290 ppm110.290 ppm
20220.320 ppm110.320 ppm
20230.240 ppm110.240 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
2018-03-1220180071690.310 ppm
2019-11-2220190333160.280 ppm
2020-12-1120206152750.250 ppm
2021-11-1220212135860.290 ppm
2022-10-2820221413680.320 ppm
2023-11-1620230457690.240 ppm