Know Your Environment. Protect Your Health.

Nitrite

York Water Company

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-02-142295547003ND
2018-05-092314208003ND
2018-08-092331795004ND
2018-11-143000425003ND
2019-02-203017336003ND
2019-05-083032293003ND
2019-08-133051259003ND
2019-11-133069543003ND
2020-02-1221818473.00ND
2020-05-1522386622.00ND
2020-08-1222973110.00ND
2020-11-1823512226.00ND
2021-02-0924033055.00ND
2021-05-1224612266.00ND
2021-08-1125194933.00ND
2021-12-1525918917.00ND
2022-02-1426264899.00ND
2022-05-1726818033.00ND
2022-09-0927618256.00ND
2022-11-0327975716.00ND
2023-02-0928497119.00ND
2023-05-1129077702.00ND
2023-08-1629674734.00ND
2023-11-1030223832.00ND