Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrite

City of Wichita Falls

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
2012N/A00N/A
2013ND20ND
20140.00500 ppm21ND - 0.01000 ppm
20150.0280 ppm32ND - 0.0650 ppm
2016N/A00N/A
2017N/A00N/A

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
2013-12-26Q1319234017ND
2013-12-26Q1319234018ND
2014-08-14Q1436796002ND
2014-11-12AC717830.01000 ppm
2015-02-09Q1505019005ND
2015-05-11Q15171920010.0190 ppm
2015-09-22Q15369950010.0650 ppm