Know Your Environment. Protect Your Health.

Nitrite

Silverdale Water District 16

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020N/A00N/A
2021N/A00N/A
2022ND110ND
2023N/A00N/A

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

Date Lab ID Result
2018-09-04ND
2019-11-25ND
2022-07-254419132ND
2022-09-124365909ND
2022-09-124365906ND
2022-09-124365908ND
2022-09-124365910ND
2022-09-124365903ND
2022-09-124365907ND
2022-09-124365904ND
2022-09-124365902ND
2022-09-124365905ND
2022-12-084408695ND