Know Your Environment. Protect Your Health.

Nitrite

The Oaks Water Supply Corporation

NOTE: The Oaks Water Supply Corporation purchases water from San Antonio Water System which is required to test for nitrite. Sample information shown below was taken by San Antonio 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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND10ND
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: The Oaks Water Supply Corporation purchases water from San Antonio Water System which is required to test for nitrite. Sample information shown below was taken by San Antonio Water System.

Date Lab ID Result
2018-03-01AE16230ND
2019-01-30AE52088ND
2019-01-31AE52331ND
2019-01-31AE52332ND
2019-03-07AE57483ND
2019-03-07AE57484ND
2019-03-28AE60388ND
2019-03-28AE60389ND
2019-04-25AE63627ND
2019-04-25AE63644ND
2019-04-25AE63645ND
2019-05-21AE67261ND
2019-05-21AE67284ND
2019-05-21AE67264ND
2019-05-21AE67263ND
2019-05-21AE67262ND
2019-05-21AE67260ND
2019-08-13AE78204ND
2019-11-14AE89183ND
2019-11-14AE89182ND
2019-11-14AE89181ND
2019-11-14AE89180ND
2019-11-14AE89179ND
2019-11-25AE90280ND
2019-11-25AE90319ND
2019-11-25AE90279ND
2019-11-25AE90278ND
2019-11-25AE90277ND
2019-11-25AE90318ND
2019-11-26AE90520ND
2019-11-26AE90501ND
2019-12-10AE91765ND
2019-12-10AE91764ND
2019-12-10AE91763ND
2019-12-11AE92052ND
2019-12-11AE92012ND
2020-10-05AF29407ND
2020-10-07AF29735ND
2020-11-17AF34769ND
2020-12-15AF37601ND
2021-01-26AF40917ND
2021-03-03AF44990ND
2021-03-03AF44991ND
2021-09-28AF71373ND
2022-06-27AG02267ND
2023-11-01AG62006ND