Nitrate and nitrite
Fort Wayne - 3 Rivers Filtration Plant
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 1.15 ppm | 12 | 12 | 0.200 ppm - 3.40 ppm |
2015 | 1.18 ppm | 15 | 15 | 0.126 ppm - 3.08 ppm |
2016 | 1.32 ppm | 6 | 6 | 0.287 ppm - 3.10 ppm |
2017 | 1.84 ppm | 12 | 12 | 0.205 ppm - 4.11 ppm |
2018 | 1.42 ppm | 9 | 9 | 0.454 ppm - 2.36 ppm |
2019 | 1.69 ppm | 12 | 12 | 0.471 ppm - 3.11 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 |
---|---|---|
2014-01-28 | 01/2814NO2NO3 | 2.88 ppm |
2014-02-27 | 22714NO2NO3 | 3.40 ppm |
2014-03-25 | 32514NO2NO3 | 2.25 ppm |
2014-04-24 | 042414NO2NO3 | 0.930 ppm |
2014-05-15 | 051514NO2NO3 | 0.590 ppm |
2014-06-19 | 061914NO2NO3 | 0.340 ppm |
2014-07-29 | 072914NO2NO3 | 0.200 ppm |
2014-08-26 | 082614NO2NO3 | 0.200 ppm |
2014-09-24 | 092414NO2NO3 | 0.710 ppm |
2014-10-28 | 102814NO2NO3 | 0.442 ppm |
2014-11-18 | 111814NO2NO3 | 0.423 ppm |
2014-12-19 | 121914NO2NO3 | 1.49 ppm |
2015-01-28 | 012815NO2NO3 | 1.77 ppm |
2015-02-25 | 022515NO2NO3 | 1.38 ppm |
2015-03-25 | 032515NO2NO3 | 2.68 ppm |
2015-04-23 | 042315NO2NO3 | 3.08 ppm |
2015-05-28 | 052815NO2NO3 | 1.06 ppm |
2015-06-25 | 06/2515NO2NO3 | 2.88 ppm |
2015-07-28 | 072815NO2NO3 | 1.02 ppm |
2015-08-25 | 08/25/15NO2NO3 | 0.454 ppm |
2015-09-23 | 092315NO2NO3 | 0.126 ppm |
2015-10-15 | FTWNITOCT15 | 0.230 ppm |
2015-10-22 | 102215NO2NO3 | 0.230 ppm |
2015-11-04 | 110415N02N03N | 0.317 ppm |
2015-11-15 | FTWNITNOV15 | 0.320 ppm |
2015-12-15 | FTWNITDEC15 | 1.04 ppm |
2015-12-16 | 121615N02N03N | 1.04 ppm |
2016-07-26 | 072616NO2NO3 | 1.01 ppm |
2016-08-24 | 082416NO2NO3 | 0.287 ppm |
2016-09-20 | 092016NO2NO3 | 1.08 ppm |
2016-10-20 | 102016N | 0.845 ppm |
2016-11-16 | 111616N | 1.63 ppm |
2016-12-14 | 121416N | 3.10 ppm |
2017-01-26 | 012617N | 3.61 ppm |
2017-02-15 | 021517N | 3.00 ppm |
2017-03-15 | 031517N | 2.20 ppm |
2017-04-20 | 042017N | 1.34 ppm |
2017-05-09 | 050917N | 2.23 ppm |
2017-06-06 | 060617N | 1.18 ppm |
2017-07-18 | 071817N | 4.11 ppm |
2017-08-25 | 081517N | 0.350 ppm |
2017-09-20 | 092017N | 0.205 ppm |
2017-10-26 | 102617NO2NO3N | 0.643 ppm |
2017-11-28 | 112817NO2NO3N | 1.91 ppm |
2017-12-14 | 121417NO2NO3N | 1.30 ppm |
2018-04-17 | 041718NO2NO3N | 2.25 ppm |
2018-05-10 | 051018NO2NO3N | 1.40 ppm |
2018-06-21 | 062118NO2NO3N | 2.36 ppm |
2018-07-19 | 071918NO2NO3N | 0.483 ppm |
2018-08-21 | 082118NO2NO3N | 1.18 ppm |
2018-09-09 | 090818NO2NO3N | 0.454 ppm |
2018-10-24 | 102418NO2NO3N | 0.888 ppm |
2018-11-15 | 111518NO2NO3N | 1.86 ppm |
2018-12-18 | 121818NO2NO3N | 1.89 ppm |
2019-01-18 | 011819NO2NO3N | 1.93 ppm |
2019-02-20 | 022019N02NO3N | 2.20 ppm |
2019-03-25 | 032519NO2NO3N | 2.16 ppm |
2019-04-25 | 042519NO2NO3N | 2.49 ppm |
2019-05-10 | 051019NO2NO3N | 1.13 ppm |
2019-06-19 | 061919NO2NO3N | 3.11 ppm |
2019-07-17 | 071719NO2NO3N | 0.892 ppm |
2019-08-20 | 082019NO2NO3N | 2.27 ppm |
2019-09-17 | 091719NO2NO3N | 0.471 ppm |
2019-10-22 | 102219NO2NO3N | 0.757 ppm |
2019-11-07 | 110719NO2NO3N | 1.48 ppm |
2019-12-11 | 121119NO2NO3N | 1.39 ppm |