Know Your Environment. Protect Your Health.

Nitrite

CTWC - Naugatuck Region-Central System

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND20ND
2020ND20ND
2021ND30ND
2022ND10ND
2023ND10ND

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
2018-01-15BZ72858NOXND
2018-04-10CA17352NOXND
2018-05-21CA50443NOXND
2018-06-11CA67843NOXND
2018-06-11CA67844NOXND
2019-01-16NOX 200518936ND
2019-01-29NOX 200519832ND
2020-01-13NOX 200562694ND
2020-01-13NOX 200562697ND
2021-04-06NOX 200611960ND
2021-04-06NOX 200611962ND
2021-04-06NOX 200611959ND
2022-02-14CK66672ND
2023-01-16CN24828ND