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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

Municipality of Anchorage

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

68

Samples

0

Samples exceeding legal limit (MCL)

57

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.632 ppm1110ND - 1.81 ppm
20130.584 ppm1211ND - 1.48 ppm
20140.497 ppm87ND - 1.000 ppm
20150.555 ppm1413ND - 1.54 ppm
20160.481 ppm1210ND - 1.57 ppm
20170.515 ppm119ND - 1.08 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2012-07-19IN*A1207321-01E0.222 ppm
2012-11-28IN*A1211347-01F0.216 ppm
2012-11-28IN*A1211347-10FND
2012-11-28IN*A1211347-09F0.710 ppm
2012-11-28IN*A1211347-08F0.630 ppm
2012-11-28IN*A1211347-07F0.550 ppm
2012-11-28IN*A1211347-05F1.81 ppm
2012-11-28IN*A1211347-04F0.500 ppm
2012-11-28IN*A1211347-03F1.23 ppm
2012-11-28IN*A1211347-02F0.431 ppm
2012-11-28IN*A1211347-06F0.654 ppm
2013-04-04IN*A1304163-01D0.389 ppm
2013-09-24IN*A1309437-01F0.151 ppm
2013-10-25IN*A1310536-01F0.455 ppm
2013-10-25IN*A1310536-02F1.18 ppm
2013-10-25IN*A1310536-03F0.681 ppm
2013-10-25IN*A1310536-04F0.598 ppm
2013-10-25IN*A1310536-05F0.842 ppm
2013-10-31IN*A1310614-03F0.593 ppm
2013-10-31IN*A1310614-04FND
2013-10-31IN*A1310614-02F0.431 ppm
2013-10-31IN*A1310614-01F0.209 ppm
2013-11-08IN*A1311145-01F1.48 ppm
2014-05-13IN*A1405164-01G0.219 ppm
2014-09-09IN*A1409133-01H0.145 ppm
2014-09-29IN*A1409503-04H0.465 ppm
2014-09-29IN*A1409503-05H1.000 ppm
2014-09-29IN*A1409503-07H0.649 ppm
2014-09-29IN*A1409503-08H0.586 ppm
2014-09-29IN*A1409503-09H0.910 ppm
2014-09-29IN*A1409503-10HND
2015-01-12IN*A1501154-01H0.850 ppm
2015-08-18IN*A1508264-01H0.145 ppm
2015-08-18IN*A1508263-07H0.632 ppm
2015-08-18IN*A1508263-03H0.670 ppm
2015-08-18IN*A1508263-02H0.452 ppm
2015-08-18IN*A1508263-01H0.201 ppm
2015-08-18IN*A1508263-07F0.632 ppm
2015-08-19IN*A1508284-01H0.115 ppm
2015-08-20IN*A1508298-04H0.504 ppm
2015-08-20IN*A1508298-05H1.54 ppm
2015-08-20IN*A1508298-09H0.766 ppm
2015-08-20IN*A1508298-10HND
2015-09-23IN*A1509278-09H0.718 ppm
2015-10-30IN*A1511004-08H0.539 ppm
2016-07-13WQ*A1607204-04J0.728 ppm
2016-07-13IN*A1607204-02J0.480 ppm
2016-07-13IN*A1607204-01J0.199 ppm
2016-07-18IN*A1607296-01J0.434 ppm
2016-07-18IN*A1607296-04J1.57 ppm
2016-07-18IN*A1607296-02J0.844 ppm
2016-07-19IN*A1607319-01H0.122 ppm
2016-08-02IN*A1608037-01D0.644 ppm
2016-08-02IN*A1608035-01DND
2016-08-29IN*A1608403-01D0.639 ppm
2016-08-29IN*A1608403-03DND
2016-11-08IN*A1611136-01B0.111 ppm
2017-08-21IN*A1708266-01D0.187 ppm
2017-08-21IN*A1708271-01E0.591 ppm
2017-08-21IN*A1708272-01E0.516 ppm
2017-08-21IN*A1708273-01E0.688 ppm
2017-08-28IN*A1708384-01C0.710 ppm
2017-08-28IN*A1708385-01C0.710 ppm
2017-08-28IN*A1708386-01C1.08 ppm
2017-08-28IN*A1708388-01CND
2017-08-29IN*A1708397-01CND
2017-10-02IN*A1710013-01K0.714 ppm
2017-10-31IN*A1711009-01E0.474 ppm