Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Fonda Water Supply

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

 

135

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.357 ppm23230.200 ppm - 0.800 ppm
20150.292 ppm2416ND - 0.600 ppm
20160.0750 ppm2412ND - 0.200 ppm
20170.0958 ppm2412ND - 0.200 ppm
2018ND180ND
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
2014-01-0720278420.200 ppm
2014-01-0720278430.200 ppm
2014-02-2120341620.300 ppm
2014-02-2120341630.400 ppm
2014-03-1120386860.300 ppm
2014-03-1120386870.400 ppm
2014-04-1520448860.200 ppm
2014-04-1520448870.300 ppm
2014-05-1320501900.200 ppm
2014-05-1320501910.300 ppm
2014-06-0420544070.300 ppm
2014-07-1520625210.300 ppm
2014-07-1520625220.400 ppm
2014-08-1220702580.400 ppm
2014-08-1220702590.300 ppm
2014-09-0820763500.800 ppm
2014-09-0820763510.600 ppm
2014-10-1520846520.600 ppm
2014-10-1520846550.600 ppm
2014-11-1720921280.300 ppm
2014-11-1720921290.200 ppm
2014-12-0820959950.300 ppm
2014-12-0820959960.300 ppm
2015-01-135184400.400 ppm
2015-01-135184410.200 ppm
2015-02-175205170.600 ppm
2015-02-175205180.500 ppm
2015-03-095214940.400 ppm
2015-03-095214930.200 ppm
2015-04-085234860.600 ppm
2015-04-085234850.500 ppm
2015-05-115255440.500 ppm
2015-05-115255450.400 ppm
2015-06-095275270.500 ppm
2015-06-095275260.500 ppm
2015-07-145295140.400 ppm
2015-07-145295130.400 ppm
2015-08-10531188ND
2015-08-10531189ND
2015-09-21534025ND
2015-09-215340240.500 ppm
2015-10-05534875ND
2015-10-05534874ND
2015-11-09537074ND
2015-11-09537073ND
2015-12-115390200.400 ppm
2015-12-11539019ND
2016-01-205412880.200 ppm
2016-01-20541289ND
2016-02-105425220.1000 ppm
2016-02-105425210.1000 ppm
2016-03-14544498ND
2016-03-14544499ND
2016-04-195469400.1000 ppm
2016-04-195469410.1000 ppm
2016-05-235493000.200 ppm
2016-05-235493010.1000 ppm
2016-06-205512580.200 ppm
2016-06-205512590.200 ppm
2016-07-125526790.200 ppm
2016-07-125526800.200 ppm
2016-08-08554443ND
2016-08-08554444ND
2016-09-225575200.1000 ppm
2016-09-22557519ND
2016-10-11558721ND
2016-10-11558720ND
2016-11-14561019ND
2016-11-14561018ND
2016-12-05562229ND
2016-12-05562228ND
2017-01-265652290.200 ppm
2017-01-265652280.200 ppm
2017-02-075658980.200 ppm
2017-02-075658990.200 ppm
2017-03-205684230.200 ppm
2017-03-205684240.200 ppm
2017-04-175699970.200 ppm
2017-04-175699960.200 ppm
2017-05-09571083ND
2017-05-095710840.1000 ppm
2017-06-135724880.200 ppm
2017-06-13572487ND
2017-07-175740360.200 ppm
2017-07-175740350.200 ppm
2017-08-14575475ND
2017-08-14575476ND
2017-09-25577331ND
2017-09-25577332ND
2017-10-10578109ND
2017-10-10578110ND
2017-11-21580061ND
2017-11-21580060ND
2017-12-11580672ND
2017-12-11580673ND
2018-01-23582127ND
2018-01-23582128ND
2018-02-07582607ND
2018-02-07582608ND
2018-03-12583581ND
2018-03-12583582ND
2018-04-17585009ND
2018-04-17585046ND
2018-05-08585933ND
2018-05-08585934ND
2018-06-11587402ND
2018-06-11587403ND
2018-07-16589171ND
2018-07-16589172ND
2018-08-13590627ND
2018-08-13590628ND
2018-09-19592622ND
2018-09-19592623ND
2019-02-05OE767965ND
2019-02-20OE773405ND
2019-03-11OE780142ND
2019-03-11OE780143ND
2019-04-09OE791811ND
2019-04-09OE791812ND
2019-05-13OE807617ND
2019-05-13OE807618ND
2019-06-12OE820962ND
2019-06-12OE820963ND
2019-07-23OE838833ND
2019-07-23OE838834ND
2019-08-13OE850019ND
2019-08-13OE850020ND
2019-09-10OE862916ND
2019-09-10OE862917ND
2019-10-08OE876304ND
2019-10-08OE876305ND
2019-11-12OE892993ND
2019-11-12OE892994ND
2019-12-03OE901181ND
2019-12-03OE901182ND