Know Your Environment. Protect Your Health.

Nitrite

Port Mansfield Public Utility District

NOTE: Port Mansfield Public Utility District purchases water from North Alamo Water Supply Company which is required to test for nitrite. Sample information shown below was taken by North Alamo Water Supply 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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
2020N/A00N/A
2021ND10ND
2022ND50ND
2023ND10ND

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

NOTE: Port Mansfield Public Utility District purchases water from North Alamo Water Supply Company which is required to test for nitrite. Sample information shown below was taken by North Alamo Water Supply Company.

Date Lab ID Result
2019-11-05AE88372ND
2022-03-01AF86767ND
2022-03-01AF86768ND
2022-08-08AG07999ND
2022-08-09AG08295ND
2022-08-09AG08296ND
2023-12-18AG66759ND