Know Your Environment. Protect Your Health.

Nitrite

Laurel Pump 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.

 

77

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND130ND
2019ND130ND
20200.00776 ppm121ND - 0.0931 ppm
20210.0105 ppm131ND - 0.137 ppm
2022ND130ND
2023ND130ND

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
2018-01-24S757463ND
2018-02-14S757771ND
2018-03-13S757791ND
2018-04-05S759344ND
2018-04-06S770742ND
2018-05-24S759352ND
2018-06-05S759474ND
2018-07-12S757801ND
2018-08-30S759544ND
2018-09-19S759570ND
2018-10-16S759591ND
2018-11-14S757813ND
2018-12-13S759672ND
2019-01-10S759676ND
2019-02-21S759643ND
2019-03-12S759633ND
2019-03-22S817053ND
2019-04-02S759636ND
2019-05-23S759282ND
2019-06-20S759290ND
2019-07-24S759728ND
2019-08-21S759703ND
2019-09-03S759704ND
2019-10-18S895865ND
2019-11-12S759358ND
2019-12-09S919987ND
2020-01-09S759366ND
2020-02-12S922978ND
2020-03-13S922986ND
2020-03-25S901906ND
2020-05-20S923023ND
2020-06-23S923045ND
2020-07-14S923031ND
2020-08-13S923038ND
2020-09-23S992027ND
2020-10-08S992051ND
2020-11-18S1020766ND
2020-12-10S9920590.0931 ppm
2021-01-14S992067ND
2021-02-08S1035156ND
2021-02-12S1035165ND
2021-03-04S992075ND
2021-04-12S923105ND
2021-05-06S923076ND
2021-06-04S9230850.137 ppm
2021-07-02S923155ND
2021-08-05S923122ND
2021-09-03S923180ND
2021-10-08S923203ND
2021-11-19S1073506ND
2021-12-03S1073512ND
2022-01-06S923191ND
2022-01-14S1136787ND
2022-02-16S1073792ND
2022-03-03S1073808ND
2022-04-14S1073519ND
2022-05-13S1073571ND
2022-06-03S1073572ND
2022-07-01S1073550ND
2022-08-22S923170ND
2022-09-12S1223017ND
2022-10-05S1223023ND
2022-11-07S1073542ND
2022-12-06S1073558ND
2023-01-05S1223044ND
2023-02-15S1223058ND
2023-02-24S1257106ND
2023-03-13S1223092ND
2023-04-10S1223062ND
2023-05-26S1223080ND
2023-06-15S1223087ND
2023-07-07S1223100ND
2023-08-04S1073891ND
2023-09-18S1223148ND
2023-10-23S1223152ND
2023-11-03S1073897ND
2023-12-08S1073854ND