Nitrate and nitrite

Alliance City PWS

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	0.373 ppm	12	12	0.110 ppm - 0.690 ppm
2015	0.369 ppm	12	12	0.210 ppm - 0.650 ppm
2016	0.341 ppm	12	11	ND - 0.510 ppm
2017	0.304 ppm	12	11	ND - 0.660 ppm
2018	0.341 ppm	12	12	0.120 ppm - 0.760 ppm
2019	0.371 ppm	10	10	0.190 ppm - 0.620 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
2014-01-08	14-10259-01	0.360 ppm
2014-02-03	14-11401-01	0.580 ppm
2014-03-05	14-12575-01	0.690 ppm
2014-04-02	14-13907-01	0.690 ppm
2014-05-07	14-15492-01	0.340 ppm
2014-06-04	14-17017-01	0.110 ppm
2014-07-08	14-18964-01	0.510 ppm
2014-08-06	14-20297-01	0.260 ppm
2014-09-09	14-22424-01	0.230 ppm
2014-10-01	14-23505-01	0.300 ppm
2014-11-05	14-25191-01	0.250 ppm
2014-12-03	14-26436-01	0.160 ppm
2015-01-06	15-10215-01	0.240 ppm
2015-02-04	15-11347-01	0.360 ppm
2015-03-04	15-12545-01	0.520 ppm
2015-04-01	15-14383-01	0.650 ppm
2015-05-05	15-15746-01	0.230 ppm
2015-06-01	15-17306-01	0.260 ppm
2015-07-08	15-19376-01	0.390 ppm
2015-08-04	15-20959-01	0.210 ppm
2015-09-01	15-22768-01	0.270 ppm
2015-10-13	15-25143-01	0.440 ppm
2015-11-03	15-26264-01	0.420 ppm
2015-12-01	15-27540-01	0.440 ppm
2016-01-06	16-10253-01	0.510 ppm
2016-02-10	16-12012-01	0.430 ppm
2016-03-01	16-12980-01	0.480 ppm
2016-04-06	16-14833-01	0.510 ppm
2016-05-03	16-16382-01	0.170 ppm
2016-06-01	16-17814-01	ND
2016-07-06	16-20233-01	0.320 ppm
2016-08-03	16-22242-01	0.200 ppm
2016-09-07	16-24716-01	0.220 ppm
2016-10-05	16-26806-01	0.380 ppm
2016-11-02	16-28549-01	0.470 ppm
2016-12-13	16-31002-01	0.400 ppm
2017-01-04	17-10147-01	0.470 ppm
2017-02-01	17-11741-01	0.610 ppm
2017-03-01	17-13527-01	0.660 ppm
2017-04-04	17-15814-01	0.240 ppm
2017-05-03	17-17664-01	ND
2017-06-07	17-20000-01	0.170 ppm
2017-07-11	17-22666-01	0.160 ppm
2017-08-02	17-24318-01	0.210 ppm
2017-09-01	17-27031-01	0.230 ppm
2017-10-04	17-29247-01	0.230 ppm
2017-11-01	17-31099-01	0.340 ppm
2017-12-06	17-33315-01	0.330 ppm
2018-01-03	18-10191-01	0.320 ppm
2018-02-07	18-12221-01	0.590 ppm
2018-03-07	18-14055-01	0.760 ppm
2018-04-03	18-15976-01	0.630 ppm
2018-05-02	18-18084-01	0.170 ppm
2018-06-05	18-20935-01	0.160 ppm
2018-07-09	M18-24134-01	0.120 ppm
2018-08-01	18-25971-01	0.190 ppm
2018-09-04	18-29034-01	0.180 ppm
2018-10-03	18-31665-01	0.330 ppm
2018-11-06	18-34357-01	0.250 ppm
2018-12-05	18-36342-01	0.390 ppm
2019-01-02	19-10098-01	0.500 ppm
2019-02-06	19-12499-01	0.620 ppm
2019-03-06	19-14391-01	0.550 ppm
2019-04-03	19-16591-01	0.530 ppm
2019-05-01	19-18580-01	0.220 ppm
2019-06-05	19-21398-01	0.250 ppm
2019-07-02	19-24102-01	0.240 ppm
2019-08-06	19-27067-01	0.190 ppm
2019-09-04	19-29594-01	0.290 ppm
2019-10-01	19-32139-01	0.320 ppm