Know Your Environment. Protect Your Health.

Nitrite

Cross Valley Water District

NOTE: Cross Valley Water District purchases water from City of Everett Public Works Department which is required to test for nitrite. Sample information shown below was taken by City of Everett Public Works Department.

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND50ND
2020N/A00N/A
2021ND10ND
2022ND10ND
2023ND50ND

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

NOTE: Cross Valley Water District purchases water from City of Everett Public Works Department which is required to test for nitrite. Sample information shown below was taken by City of Everett Public Works Department.

Date Lab ID Result
2018-05-01ND
2019-05-08ND
2021-05-124137068ND
2022-08-034366207ND
2023-05-094546339ND