Nitrate

Dayton Public Water System

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

MORE ABOUT THIS CONTAMINANT

188

Samples

Samples exceeding legal limit (MCL)

180

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.720 ppm	35	35	0.124 ppm - 1.53 ppm
2015	0.733 ppm	34	34	0.104 ppm - 1.79 ppm
2016	0.794 ppm	33	32	ND - 1.61 ppm
2017	0.991 ppm	35	35	0.109 ppm - 1.65 ppm
2018	0.925 ppm	31	31	0.167 ppm - 1.83 ppm
2019	1.02 ppm	20	20	0.331 ppm - 1.90 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date	Lab ID	Result
2014-01-06	140108-84-01	0.811 ppm
2014-01-07	140108-83-01	0.879 ppm
2014-01-07	140108-83-03	0.295 ppm
2014-02-11	140213-95-02	0.456 ppm
2014-02-11	140213-95-04	1.16 ppm
2014-02-11	140213-96-01	0.701 ppm
2014-03-05	140307-80-01	1.36 ppm
2014-03-05	140307-81-01	1.33 ppm
2014-03-05	140307-81-03	0.577 ppm
2014-04-01	140402-71-01	1.34 ppm
2014-04-01	140402-73-01	0.559 ppm
2014-04-01	140402-73-03	0.620 ppm
2014-05-12	140513-92-01	0.498 ppm
2014-05-12	140516-68-01	1.53 ppm
2014-05-12	140516-70-01	0.479 ppm
2014-06-11	140612-114-01	0.933 ppm
2014-06-11	140612-114-03	0.241 ppm
2014-06-11	140612-115-01	1.17 ppm
2014-07-07	140709-64-01	1.30 ppm
2014-07-07	140709-64-03	0.552 ppm
2014-07-07	140709-66-01	0.544 ppm
2014-08-11	140812-49-01	0.295 ppm
2014-08-11	140812-49-04	1.11 ppm
2014-08-11	140812-50-01	0.280 ppm
2014-09-09	140910-71-01	0.737 ppm
2014-09-09	140910-71-03	0.262 ppm
2014-09-09	140910-73-01	0.833 ppm
2014-10-07	141007-63-01	0.902 ppm
2014-10-08	141009-60-02	0.199 ppm
2014-10-08	141009-60-04	0.897 ppm
2014-11-03	141104-54-01	1.06 ppm
2014-11-03	141104-54-03	0.131 ppm
2014-12-03	141208-33-01	0.129 ppm
2014-12-03	141210-57-01	0.124 ppm
2014-12-03	141210-57-03	0.926 ppm
2015-01-05	150106-27-01	1.02 ppm
2015-01-05	150108-46-02	0.210 ppm
2015-01-05	150108-46-04	1.21 ppm
2015-02-02	150203-39-01	0.859 ppm
2015-02-02	150203-39-03	0.711 ppm
2015-02-02	150203-41-01	0.922 ppm
2015-03-09	150311-02-1	1.19 ppm
2015-03-09	150310-34-01	0.453 ppm
2015-03-09	150311-18-01	0.435 ppm
2015-04-08	150409-25-02	1.79 ppm
2015-04-08	150409-25-04	0.504 ppm
2015-04-08	150409-27-01	0.489 ppm
2015-05-11	150512-36-01	1.19 ppm
2015-05-11	150512-40-02	0.401 ppm
2015-05-11	150512-40-04	1.14 ppm
2015-06-09	150609-44-02	1.02 ppm
2015-06-09	150609-44-04	0.620 ppm
2015-07-06	150706-27-02	0.399 ppm
2015-07-06	150706-27-03	0.861 ppm
2015-07-06	150706-30-01	0.817 ppm
2015-08-05	150108-46-02A	0.421 ppm
2015-08-05	150108-46-04A	1.13 ppm
2015-08-06	150106-27-01A	0.349 ppm
2015-09-01	150903-35-01	0.458 ppm
2015-09-01	150903-31-01	0.270 ppm
2015-09-01	150903-31-02	0.789 ppm
2015-10-12	151013-38-02	1.44 ppm
2015-10-12	151013-38-04	0.256 ppm
2015-10-13	151013-41-01	0.243 ppm
2015-11-03	151105-31-02	0.104 ppm
2015-11-03	151105-31-04	1.03 ppm
2015-11-03	151105-32-01	1.07 ppm
2015-12-07	151208-37-01-1	0.225 ppm
2015-12-07	151208-37-02-1	0.871 ppm
2016-01-11	160111-28-01	0.987 ppm
2016-01-11	160111-28-02	0.567 ppm
2016-02-01	160202-37-01	0.112 ppm
2016-02-01	160202-38-02	0.917 ppm
2016-02-01	160202-40-01	0.914 ppm
2016-03-02	160303-27-01	1.06 ppm
2016-03-02	160303-29-01	0.421 ppm
2016-03-02	160303-29-03	1.30 ppm
2016-04-04	160407-31-02	0.389 ppm
2016-04-04	160407-31-04	1.57 ppm
2016-04-04	160407-36-01	0.678 ppm
2016-05-04	160506-19-02	1.43 ppm
2016-05-04	160506-19-04	0.370 ppm
2016-05-05	160506-20-01	0.723 ppm
2016-06-06	160613-31-02	1.03 ppm
2016-06-06	160613-31-04	0.589 ppm
2016-07-06	160708-23-01	0.545 ppm
2016-07-06	160708-26-01	1.17 ppm
2016-07-06	160708-26-02	0.612 ppm
2016-08-08	160810-23-02	0.913 ppm
2016-08-08	160810-23-04	0.380 ppm
2016-08-08	160810-25-01	1.21 ppm
2016-09-06	160907-23-01	1.02 ppm
2016-09-06	160908-38-02	0.123 ppm
2016-09-06	160908-38-04	1.04 ppm
2016-10-03	161005-27-01	0.756 ppm
2016-10-03	161005-26-01	1.07 ppm
2016-10-03	161005-26-02	ND
2016-11-08	161110-34-02	0.428 ppm
2016-11-08	161110-34-04	1.11 ppm
2016-11-08	161110-35-01	0.872 ppm
2016-12-06	161207-28-02-NO3	1.61 ppm
2016-12-06	161207-28-04-NO3	0.297 ppm
2017-01-09	170111-28-02-NO3	0.382 ppm
2017-01-09	170111-28-01-NO3	1.11 ppm
2017-01-09	170110-27-01-NO3	0.890 ppm
2017-02-06	170207-43-02-NO3	1.05 ppm
2017-02-06	170207-43-04-NO3	1.19 ppm
2017-02-06	170207-44-01-NO3	1.15 ppm
2017-03-06	170308-24-04-NO3	0.895 ppm
2017-03-06	170308-24-02-NO3	0.861 ppm
2017-04-05	170406-40-04-IC	0.519 ppm
2017-04-05	170406-40-02-IC	0.944 ppm
2017-04-05	170411-46-01-IC	0.949 ppm
2017-05-08	170509-41-02-IC	0.910 ppm
2017-05-08	170509-41-04-IC	1.63 ppm
2017-05-08	170509-42-01-IC	1.47 ppm
2017-06-06	170609-31-01-IC	0.901 ppm
2017-06-06	170609-31-02-IC	1.42 ppm
2017-06-06	170607-26-01-IC	1.41 ppm
2017-07-10	170711-44-04IC	0.709 ppm
2017-07-10	170711-44-02IC	1.24 ppm
2017-07-10	170711-45-01IC	0.980 ppm
2017-08-07	170808-52-04-NO3	0.572 ppm
2017-08-07	170808-52-02-NO3	1.11 ppm
2017-08-07	170808-53-01-NO3	1.23 ppm
2017-09-05	170907-30-04IC	0.657 ppm
2017-09-05	170907-30-02IC	1.61 ppm
2017-09-05	170907-31-01IC	1.65 ppm
2017-10-03	171004-38-04-IC	0.109 ppm
2017-10-03	171004-38-03-IC	1.33 ppm
2017-10-03	171004-39-01-IC	1.12 ppm
2017-11-01	171102-35-04IC	0.204 ppm
2017-11-01	171102-35-02IC	1.29 ppm
2017-11-01	171102-37-01IC	0.914 ppm
2017-12-04	171206-22-04IC	0.564 ppm
2017-12-04	171206-22-03IC	1.31 ppm
2017-12-04	171206-23-01IC	0.418 ppm
2018-01-08	180109-47-04IC	0.555 ppm
2018-01-08	180109-47-03IC	0.596 ppm
2018-01-08	180109-48-01IC	0.689 ppm
2018-02-01	180206-41-01IC	0.794 ppm
2018-02-07	180208-36-04IC	0.408 ppm
2018-02-07	180208-36-02IC	1.40 ppm
2018-02-07	180208-37-01IC	1.35 ppm
2018-03-05	180306-42-04IC	0.514 ppm
2018-03-05	180306-42-02IC	1.57 ppm
2018-03-05	180306-43-01IC	1.37 ppm
2018-04-03	180409-33-02IC	0.638 ppm
2018-04-03	180409-33-01IC	1.83 ppm
2018-05-07	180508-41-04-IC	0.518 ppm
2018-05-07	180508-41-02-IC	1.21 ppm
2018-05-07	180508-42-01-IC	0.514 ppm
2018-06-05	180605-42-04-IC	0.285 ppm
2018-06-05	180605-42-02-IC	1.48 ppm
2018-07-09	180711-27-04NO3	0.444 ppm
2018-07-09	180711-27-02NO3	1.17 ppm
2018-08-07	180808-27-02-IC	0.587 ppm
2018-08-07	180808-27-04-IC	1.68 ppm
2018-09-10	180912-25-02-NO3	0.373 ppm
2018-09-10	180912-25-04-NO3	1.53 ppm
2018-09-10	180912-26-01-NO3	0.420 ppm
2018-10-08	181010-28-02-NO3	0.167 ppm
2018-10-08	181010-28-04-NO3	1.53 ppm
2018-10-08	181010-29-01-NO3	1.50 ppm
2018-11-07	181108-34-04	0.412 ppm
2018-11-07	181108-34-03	1.49 ppm
2018-12-05	181206-38-04-NO3	0.334 ppm
2018-12-05	181206-38-03-NO3	1.31 ppm
2019-01-07	190108-54-02-NO3	0.598 ppm
2019-01-07	190108-54-04-NO3	1.90 ppm
2019-02-05	190206-32-02-NO3	0.531 ppm
2019-02-05	190206-32-04-NO3	1.14 ppm
2019-03-05	190306-33-04-NO3	0.397 ppm
2019-03-05	190306-33-03-NO3	0.986 ppm
2019-04-02	190404-33-04NO3	0.876 ppm
2019-04-02	190404-33-03NO3	1.45 ppm
2019-05-06	190507-43-04-NO3	0.482 ppm
2019-05-06	190507-43-02-NO3	1.69 ppm
2019-06-10	190611-43-04-NO3	0.866 ppm
2019-06-10	190611-43-03-NO3	1.60 ppm
2019-07-08	190709-45-04-NO3	0.618 ppm
2019-07-08	190709-45-02-NO3	1.16 ppm
2019-08-05	190806-45-04-NO3	0.445 ppm
2019-08-05	190806-45-03-NO3	1.72 ppm
2019-09-09	190910-42-04-NO3	0.499 ppm
2019-09-09	190910-42-02-NO3	1.72 ppm
2019-10-08	191009-22-04-NO3	0.331 ppm
2019-10-08	191009-22-02-NO3	1.44 ppm