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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Lancaster

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0400 ppm21ND - 0.0800 ppm
20130.0167 ppm32ND - 0.0315 ppm
20140.0633 ppm220.0165 ppm - 0.110 ppm
20150.0203 ppm21ND - 0.0405 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
2012-02-211202587001ND
2012-02-2112025870020.0800 ppm
2014-07-10Q14271720010.110 ppm
2014-07-10Q14271720020.0165 ppm
2015-03-19Q1510465001ND
2015-08-18Q15326140010.0405 ppm