Know Your Environment. Protect Your Health.

Nitrite

Chrisman

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.

 

45

Samples

16

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.12 ppm84ND - 3.10 ppm
20191.59 ppm1413ND - 2.60 ppm
20200.824 ppm1312ND - 1.60 ppm
20210.868 ppm990.630 ppm - 1.30 ppm
2022ND10ND
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
2018-02-268024056-010.330 ppm
2018-06-148062928-01ND
2018-10-038101159-013.10 ppm
2018-10-098102149-013.10 ppm
2018-10-308105777-012.40 ppm
2018-12-038120260-03ND
2018-12-038120260-04ND
2018-12-038120260-02ND
2019-01-109012130-010.690 ppm
2019-01-299014520-012.40 ppm
2019-02-079021453-012.40 ppm
2019-02-199023324-010.590 ppm
2019-03-059030715-012.00 ppm
2019-04-159043510-012.60 ppm
2019-05-209054140-012.20 ppm
2019-06-129062530-011.90 ppm
2019-07-029070787-012.10 ppm
2019-08-159083592-012.10 ppm
2019-08-209084788-012.20 ppm
2019-09-239094554-010.420 ppm
2019-10-179103985-01ND
2019-11-199113516-010.720 ppm
2020-01-230014338-020.780 ppm
2020-03-170033277-010.900 ppm
2020-03-240034305-010.810 ppm
2020-04-220044224-01ND
2020-05-050050867-010.760 ppm
2020-06-030061127-010.590 ppm
2020-07-210074482-011.10 ppm
2020-08-030080365-010.910 ppm
2020-09-150093457-010.690 ppm
2020-10-070101758-010.660 ppm
2020-11-040111114-011.000 ppm
2020-12-020120768-011.60 ppm
2020-12-040121170-010.910 ppm
2021-01-12EA02046-010.670 ppm
2021-02-22EB03601-010.720 ppm
2021-03-31ED00026-010.780 ppm
2021-04-12ED02349-010.790 ppm
2021-05-19EE03985-010.920 ppm
2021-06-17EF03855-011.30 ppm
2021-07-07EG01353-011.30 ppm
2021-08-18EH04143-010.630 ppm
2021-09-08EI01496-010.700 ppm
2022-12-22FL04292-01ND