Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrite

City of Kerrville

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND50ND
2014ND10ND
2015ND50ND
2016N/A00N/A
2017ND30ND

ppm = parts per million

State and national drinking water standards and health guidelines

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
2012-04-041204117002ND
2012-04-041204117001ND
2012-07-251207951003ND
2012-07-251207951002ND
2012-07-251207951001ND
2012-10-041210228001ND
2013-01-23AC08472ND
2013-04-11AC16354ND
2013-07-29AC25993ND
2013-07-29AC25989ND
2013-07-29AC25985ND
2014-10-15AC69702ND
2015-01-28AC78026ND
2015-04-15AC88246ND
2015-07-20AD00018ND
2015-07-20AD00022ND
2015-08-14AD04411ND
2017-05-08AD82914ND
2017-05-09AD83219ND
2017-05-09AD83218ND