Know Your Environment. Protect Your Health.

Nitrite

Bellaire Public Water 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.

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019N/A00N/A
2020ND100ND
2021ND110ND
2022ND120ND
2023ND110ND

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
2018-01-01A180331344ND
2018-02-05A180548124ND
2018-03-05A180508546ND
2018-06-0418060373ND
2018-07-0218070366ND
2018-09-1018091466ND
2018-10-0818101629ND
2018-12-1018121469ND
2020-01-0620010671ND
2020-02-0320020173ND
2020-03-0220030319ND
2020-04-0620040809ND
2020-05-0420050339ND
2020-06-0120060353ND
2020-08-0320080212ND
2020-09-0720091022ND
2020-10-0520100714ND
2020-12-0720121574ND
2021-01-0421010276ND
2021-02-0121020304ND
2021-03-0121030347ND
2021-04-0521040567ND
2021-05-0321050323ND
2021-07-0521070418ND
2021-08-0221080417ND
2021-09-0621090815ND
2021-10-0421100493ND
2021-11-0121110320ND
2021-12-0621121041ND
2022-01-0322010185ND
2022-02-0722020758ND
2022-03-0722031161ND
2022-04-0422040460ND
2022-05-0222050421ND
2022-06-0822061056ND
2022-07-0422070374ND
2022-08-0122080402ND
2022-09-0522090718ND
2022-10-0322100428ND
2022-11-0722111024ND
2022-12-0522123021ND
2023-01-0223010176ND
2023-02-0623020704ND
2023-03-0623031032ND
2023-05-0123050320ND
2023-06-0523060812ND
2023-07-1023071399ND
2023-08-1423082239ND
2023-09-0423090340ND
2023-10-0223100403ND
2023-11-0623110841ND
2023-12-0423120456ND