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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Paw Penn District

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.

MORE ABOUT THIS CONTAMINANT

 

121

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015ND220ND
2016ND220ND
2017ND190ND
2018ND160ND
2019ND220ND

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
2014-01-0824408401ND
2014-01-0824408901ND
2014-01-0824409201ND
2014-01-0824409901ND
2014-01-0824410001ND
2014-04-0125338901ND
2014-04-0125337401ND
2014-04-0125337801ND
2014-04-0125338001ND
2014-04-0125338301ND
2014-04-0125338501ND
2014-04-0125338701ND
2014-07-0726113601ND
2014-07-0726113801ND
2014-07-0726114101ND
2014-07-0726114301ND
2014-10-0127102701ND
2014-10-0127102801ND
2014-10-0127102901ND
2014-10-0127103001ND
2015-01-0512315778ND
2015-01-0512315780ND
2015-01-0512315782ND
2015-01-0512315785ND
2015-01-0512315787ND
2015-04-0112543773ND
2015-04-0112543775ND
2015-04-0112543777ND
2015-04-0112543779ND
2015-04-0712660715ND
2015-04-0712660710ND
2015-04-0812660713ND
2015-07-0913043445ND
2015-07-0913043447ND
2015-07-0913043449ND
2015-07-0913043451ND
2015-07-0913043453ND
2015-10-0113419748ND
2015-10-0113419750ND
2015-10-0113419752ND
2015-10-0113419754ND
2015-10-0113419756ND
2016-01-0613783171ND
2016-01-0613783173ND
2016-01-0613783175ND
2016-01-0613783177ND
2016-01-0613783180ND
2016-01-0613783182ND
2016-04-0414139316ND
2016-04-0414139303ND
2016-04-0414139305ND
2016-04-0414139307ND
2016-04-0414139309ND
2016-04-0414139313ND
2016-04-1814139361ND
2016-04-1814139338ND
2016-07-1314610367ND
2016-07-1314610369ND
2016-07-1314610371ND
2016-07-1314610373ND
2016-10-0315112437ND
2016-10-0315112439ND
2016-10-0315112441ND
2016-10-0315112443ND
2017-01-0415551676ND
2017-01-0415551678ND
2017-01-0415551680ND
2017-01-0415551683ND
2017-01-0415551685ND
2017-04-0515975951ND
2017-04-0515975796ND
2017-04-0515975856ND
2017-04-0515975887ND
2017-04-0515975918ND
2017-04-0515975949ND
2017-07-0616450304ND
2017-07-0616450366ND
2017-07-1116450273ND
2017-07-1116450335ND
2017-10-1116915014ND
2017-10-1116915016ND
2017-10-1116915018ND
2017-10-1116915020ND
2018-01-1138160401ND
2018-01-1138160601ND
2018-01-1138160901ND
2018-01-1138161001ND
2018-04-1139072501ND
2018-04-1139071901ND
2018-04-1139072001ND
2018-04-1139072301ND
2018-04-1139072401ND
2018-07-1640205901ND
2018-07-1640206701ND
2018-07-1640206801ND
2018-10-0441310801ND
2018-10-0441310901ND
2018-10-0441311101ND
2018-10-0441311201ND
2019-01-0342498601ND
2019-01-0342498701ND
2019-01-0342499001ND
2019-01-0342499101ND
2019-02-0643221301ND
2019-04-0143657801ND
2019-04-0143657901ND
2019-04-0143658301ND
2019-04-0143658401ND
2019-04-0143658501ND
2019-05-2944016101ND
2019-07-0845016201ND
2019-07-0845016301ND
2019-07-0845016401ND
2019-07-1545716201ND
2019-08-1945830801ND
2019-10-0246831601ND
2019-10-0246831701ND
2019-10-0246831801ND
2019-10-3143999601ND
2019-11-1147444701ND
2019-12-1845016001ND