Know Your Environment. Protect Your Health.

Nitrite

City of Commerce

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.

 

25

Samples

2

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.448 ppm440.314 ppm - 0.821 ppm
20190.522 ppm440.357 ppm - 0.617 ppm
20200.292 ppm43ND - 0.420 ppm
20210.263 ppm440.0540 ppm - 0.430 ppm
20220.758 ppm54ND - 1.04 ppm
20231.01 ppm440.840 ppm - 1.21 ppm

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
2018-02-14Q18062360060.314 ppm
2018-06-04Q18220470080.330 ppm
2018-08-09Q18319670010.325 ppm
2018-11-06Q18443150010.821 ppm
2019-02-21Q19077430160.617 ppm
2019-05-06Q19202650010.587 ppm
2019-09-23Q19674470010.527 ppm
2019-12-16Q19800830010.357 ppm
2020-02-12Q2005708001ND
2020-05-07Q20180510090.384 ppm
2020-08-04Q20303610070.362 ppm
2020-11-02Q20423270030.420 ppm
2021-01-27Q21020320120.335 ppm
2021-05-06Q21117740030.232 ppm
2021-09-07Q21241860010.430 ppm
2021-11-03Q21308910010.0540 ppm
2022-02-10Q22049390060.959 ppm
2022-04-25Q22123450010.971 ppm
2022-08-24Q22252100011.04 ppm
2022-10-26Q2232338011ND
2022-10-26Q22323380120.822 ppm
2023-02-15Q23062430130.993 ppm
2023-05-30Q23199670010.997 ppm
2023-08-21Q23351260030.840 ppm
2023-11-28Q23505970011.21 ppm