Know Your Environment. Protect Your Health.

Nitrite

North Hunt Special Utility District

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.

 

51

Samples

4

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.481 ppm880.264 ppm - 0.844 ppm
20190.469 ppm880.170 ppm - 1.15 ppm
20200.217 ppm96ND - 0.673 ppm
20210.228 ppm87ND - 0.769 ppm
20220.763 ppm108ND - 1.65 ppm
20230.697 ppm880.221 ppm - 1.27 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
2018-02-14Q18062400020.315 ppm
2018-02-14Q18062400010.412 ppm
2018-05-10Q18193200020.264 ppm
2018-05-10Q18193200010.765 ppm
2018-08-09Q18319730030.290 ppm
2018-08-09Q18319730040.299 ppm
2018-11-06Q18443180010.658 ppm
2018-11-06Q18443180020.844 ppm
2019-03-12Q19102370030.171 ppm
2019-03-12Q19102370040.779 ppm
2019-05-28Q19287500010.591 ppm
2019-05-28Q19287500070.348 ppm
2019-09-03Q19613110011.15 ppm
2019-09-03Q19613110020.170 ppm
2019-12-12Q19799890010.352 ppm
2019-12-12Q19799890020.194 ppm
2020-02-12Q20057100010.281 ppm
2020-02-12Q2005710002ND
2020-05-07Q20180550030.391 ppm
2020-05-07Q20180550040.249 ppm
2020-09-23Q2037713001ND
2020-09-23Q2037713002ND
2020-11-23Q20466210220.320 ppm
2020-11-23Q20466210230.673 ppm
2020-11-23Q20466210240.0409 ppm
2021-02-08Q21037000110.148 ppm
2021-02-08Q21037000120.176 ppm
2021-05-06Q21117680030.344 ppm
2021-05-06Q21117680040.0314 ppm
2021-08-04Q21205220010.162 ppm
2021-08-04Q21205220020.769 ppm
2021-10-19Q21293150010.191 ppm
2021-10-19Q2129315002ND
2022-02-10Q22049370010.910 ppm
2022-02-10Q22049370040.709 ppm
2022-04-25Q22123410010.874 ppm
2022-04-25Q22123410041.12 ppm
2022-08-24Q22252130020.953 ppm
2022-08-24Q22252130010.530 ppm
2022-11-29Q2235351002ND
2022-11-29Q2235351003ND
2022-11-29Q22353510041.65 ppm
2022-11-29Q22353510110.888 ppm
2023-03-13Q23096680010.342 ppm
2023-03-13Q23096680020.963 ppm
2023-05-30Q23199610010.752 ppm
2023-05-30Q23199610020.750 ppm
2023-08-21Q23351210010.221 ppm
2023-08-21Q23351210020.933 ppm
2023-11-28Q23505860030.346 ppm
2023-11-28Q23505860041.27 ppm