Know Your Environment. Protect Your Health.

Nitrite

Croppers 1st 4th and 5th Addition

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.

 

36

Samples

13

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.495 ppm43ND - 0.950 ppm
20201.08 ppm54ND - 1.72 ppm
20210.704 ppm54ND - 1.47 ppm
20221.19 ppm770.520 ppm - 1.64 ppm
20230.453 ppm148ND - 1.60 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
2018-02-2018B0439-01_01ND
2019-02-1919B0361-010.570 ppm
2019-05-2819E0878-010.460 ppm
2019-09-1019I0361-01ND
2019-11-1819K0491-010.950 ppm
2020-02-1020B0199-011.20 ppm
2020-05-0520E0064-011.09 ppm
2020-09-0120I0099-011.40 ppm
2020-11-1620K0345-011.72 ppm
2020-11-1820K0465-01ND
2021-02-0921B0231-011.47 ppm
2021-02-1621B0320-010.110 ppm
2021-05-0321E0023-011.23 ppm
2021-09-0821I0257-01ND
2021-11-2921K0903-010.710 ppm
2022-03-0822C0215-011.31 ppm
2022-05-0222E0008-011.37 ppm
2022-08-2222H1106-011.43 ppm
2022-10-3122K0004-011.64 ppm
2022-11-0222K0184-010.890 ppm
2022-11-1522K0421-011.17 ppm
2022-12-0622L0135-010.520 ppm
2023-01-1023A0097-010.390 ppm
2023-01-2423A0423-01ND
2023-02-0623B0162-010.420 ppm
2023-03-0623C0157-01ND
2023-04-0323D0028-010.380 ppm
2023-05-0223E0097-011.06 ppm
2023-06-0623F0257-010.960 ppm
2023-07-1123G0439-011.60 ppm
2023-07-1223G0530-010.730 ppm
2023-08-0823H0475-01ND
2023-09-1223I0383-01ND
2023-10-0323J0074-01ND
2023-11-0723K0178-01ND
2023-12-0523L0088-010.800 ppm