Know Your Environment. Protect Your Health.

Nitrite

Swta - Main System

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.

 

62

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND140ND
2019ND90ND
2020ND90ND
2021ND100ND
2022ND100ND
2023ND100ND

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
2018-01-098012152-01ND
2018-01-098012152-03ND
2018-04-108042612-05ND
2018-04-108042613-01ND
2018-04-108042612-07ND
2018-04-108042612-03ND
2018-04-108042612-02ND
2018-04-108042613-03ND
2018-04-108042612-01ND
2018-04-108042612-06ND
2018-07-108072650-03ND
2018-07-108072650-01ND
2018-10-098102506-03ND
2018-10-098102506-01ND
2019-01-159012871-01ND
2019-01-159012871-03ND
2019-04-099042570-01ND
2019-04-239044997-07ND
2019-04-239044997-04ND
2019-04-239044997-03ND
2019-04-239044997-02ND
2019-04-239044997-06ND
2019-04-239044997-05ND
2020-04-1422080560.00ND
2020-04-1422080569.00ND
2020-04-1422080557.00ND
2020-04-1422080554.00ND
2020-04-1422080551.00ND
2020-04-1422080566.00ND
2020-04-1422080563.00ND
2020-08-0422662538.00ND
2020-11-0323410251.00ND
2021-02-0323936526.00ND
2021-04-0624301857.00ND
2021-04-0624301859.00ND
2021-04-0624301855.00ND
2021-04-0624301853.00ND
2021-04-0624301851.00ND
2021-04-0624301861.00ND
2021-05-0424495739.00ND
2021-08-0325078074.00ND
2021-11-0225637169.00ND
2022-02-0826165303.00ND
2022-05-0326705351.00ND
2022-05-3126705580.00ND
2022-05-3126705572.00ND
2022-05-3126705570.00ND
2022-05-3126705576.00ND
2022-05-3126705574.00ND
2022-05-3126705578.00ND
2022-08-0227094056.00ND
2022-11-0827872868.00ND
2023-02-0728397503.00ND
2023-04-0428761041.00ND
2023-04-0428761037.00ND
2023-04-0428761040.00ND
2023-04-0428761039.00ND
2023-04-0428761038.00ND
2023-05-0228960611.00ND
2023-08-0129556294.00ND
2023-11-0730121798.00ND
2023-12-1230296266.00ND