Know Your Environment. Protect Your Health.

Nitrite

Quincy Water Department City Of

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.

 

105

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND90ND
2019ND110ND
2020N/A00N/A
2021ND240ND
20220.0136 ppm192ND - 0.129 ppm
2023ND420ND

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
2018-01-09ND
2018-04-30ND
2018-05-07ND
2018-05-07ND
2018-06-04ND
2018-06-04ND
2018-07-10ND
2018-08-13ND
2018-09-12ND
2019-01-15ND
2019-01-15ND
2019-04-18ND
2019-05-14ND
2019-06-17ND
2019-06-17ND
2019-08-29ND
2019-09-09ND
2019-10-02ND
2019-12-18ND
2019-12-18ND
2021-01-134061066ND
2021-01-134061064ND
2021-01-134061065ND
2021-02-094071102ND
2021-03-024083451ND
2021-04-204103051ND
2021-04-204103049ND
2021-04-204103050ND
2021-05-054109020ND
2021-07-134137208ND
2021-07-134137210ND
2021-07-134137207ND
2021-07-134137209ND
2021-08-044146232ND
2021-09-164175289ND
2021-09-164175290ND
2021-09-234175747ND
2021-10-124188329ND
2021-10-124188332ND
2021-10-264193383ND
2021-10-264193384ND
2021-11-104203466ND
2021-11-184203464ND
2021-11-224210584ND
2022-01-124225653ND
2022-01-124225652ND
2022-04-124268175ND
2022-04-124268176ND
2022-06-154290723ND
2022-07-204308485ND
2022-08-164328511ND
2022-08-164328511ND
2022-09-134344353ND
2022-09-134344352ND
2022-09-134344352ND
2022-10-064357352ND
2022-10-064357352ND
2022-10-064434587ND
2022-11-034364280ND
2022-11-034364280ND
2022-11-034364279ND
2022-12-0643776360.129 ppm
2022-12-0643776360.129 ppm
2023-01-104399424ND
2023-01-104399424ND
2023-01-104399425ND
2023-02-214411991ND
2023-02-214411992ND
2023-02-214411993ND
2023-02-214411993ND
2023-03-094424633ND
2023-03-094424635ND
2023-03-094424632ND
2023-03-094424634ND
2023-03-094427804ND
2023-03-144424642ND
2023-03-144424642ND
2023-04-194442905ND
2023-04-194442905ND
2023-04-194442904ND
2023-04-204442827ND
2023-04-274448507ND
2023-05-094448541ND
2023-05-094448541ND
2023-06-014461517ND
2023-06-014461517ND
2023-07-064486040ND
2023-07-064486040ND
2023-07-064483815ND
2023-07-064483816ND
2023-07-064483818ND
2023-08-174510958ND
2023-08-174510958ND
2023-09-194524049ND
2023-09-194524049ND
2023-09-264524075ND
2023-10-034530803ND
2023-10-034530803ND
2023-10-034530805ND
2023-10-034530804ND
2023-10-034530802ND
2023-11-024547417ND
2023-11-024547417ND
2023-12-074561787ND
2023-12-074561787ND