Nitrate
Put-in-bay Village
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.713 ppm | 12 | 12 | 0.120 ppm - 3.19 ppm |
2015 | 0.554 ppm | 13 | 12 | ND - 1.92 ppm |
2016 | 1.67 ppm | 12 | 12 | 0.220 ppm - 6.45 ppm |
2017 | 0.515 ppm | 15 | 14 | ND - 1.17 ppm |
2018 | 0.555 ppm | 12 | 12 | 0.190 ppm - 1.47 ppm |
2019 | 0.686 ppm | 10 | 8 | ND - 1.84 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 |
---|---|---|
2014-01-23 | 14-11046-01 | 0.500 ppm |
2014-02-24 | 14-12141-01 | 0.510 ppm |
2014-03-07 | 14-12680-06 | 0.370 ppm |
2014-04-16 | 14-14750-01 | 1.33 ppm |
2014-05-12 | 14-15712-01 | 0.500 ppm |
2014-06-02 | 14-16818-04 | 0.730 ppm |
2014-07-21 | 14-19537-01 | 3.19 ppm |
2014-08-21 | 14-21382-02 | 0.480 ppm |
2014-09-24 | 14-23111-01 | 0.120 ppm |
2014-10-15 | 14-24216-01 | 0.340 ppm |
2014-11-24 | 14-26026-01 | 0.160 ppm |
2014-12-07 | 14-26643-02 | 0.330 ppm |
2015-01-15 | 15-10633-01 | 0.600 ppm |
2015-02-18 | 15-12062-01 | 0.570 ppm |
2015-03-04 | 15-12590-02 | 0.510 ppm |
2015-04-01 | 15-13979-01 | 0.720 ppm |
2015-05-04 | 15-15456-01A | 1.05 ppm |
2015-06-01 | 15-16989-03 | 0.480 ppm |
2015-07-27 | 15-20427-01 | 1.92 ppm |
2015-08-17 | 15-21787-02 | 0.410 ppm |
2015-09-29 | 15-24262-11 | ND |
2015-10-19 | 15-25355-03A | 0.160 ppm |
2015-11-19 | 15-27081-01 | 0.240 ppm |
2015-12-04 | 15-27794-01 | 0.260 ppm |
2015-12-22 | 15-28701-02 | 0.280 ppm |
2016-01-21 | 16-11017-01 | 0.400 ppm |
2016-02-17 | 16-12342-01 | 0.720 ppm |
2016-03-21 | 16-14076-02 | 0.590 ppm |
2016-04-29 | 16-16195-01 | 0.990 ppm |
2016-05-31 | 16-17826-01 | 0.990 ppm |
2016-06-21 | 16-19306-02 | 0.760 ppm |
2016-07-27 | 16-21584-01 | 0.480 ppm |
2016-08-23 | 16-23819-02 | 4.67 ppm |
2016-09-13 | 16-25073-03 | 3.41 ppm |
2016-10-20 | 16-27770-02 | 0.220 ppm |
2016-11-28 | 16-29860-01 | 6.45 ppm |
2016-12-05 | 16-30236-04 | 0.370 ppm |
2017-01-23 | 17-11229-01 | 0.650 ppm |
2017-02-02 | 17-11960-01 | 0.560 ppm |
2017-03-01 | 17-13519-04 | 0.700 ppm |
2017-04-25 | 17-18789-01 | 0.780 ppm |
2017-05-29 | 17-19696-01 | 0.800 ppm |
2017-06-06 | 17-19696-02 | 1.17 ppm |
2017-07-05 | 17-21875-02 | 0.650 ppm |
2017-07-25 | 17-23615-02 | 0.560 ppm |
2017-08-01 | 17-24085-02 | 0.510 ppm |
2017-09-21 | 17-28239-02 | 0.390 ppm |
2017-09-28 | 17-28716-03 | 0.380 ppm |
2017-10-16 | 17-29998-02 | 0.160 ppm |
2017-11-02 | 17-31167-01 | ND |
2017-11-13 | 17-31889-01 | 0.190 ppm |
2017-12-03 | 17-32913-02 | 0.220 ppm |
2018-01-09 | 18-10539-02 | 1.18 ppm |
2018-01-24 | 18-11504-03 | 0.340 ppm |
2018-02-20 | 18-12992-01 | 0.490 ppm |
2018-03-14 | M18-14569-03 | 0.570 ppm |
2018-04-19 | 18-17167-02 | 1.47 ppm |
2018-05-24 | 18-20003-01 | 0.570 ppm |
2018-06-13 | 18-21752-02A | 0.860 ppm |
2018-08-13 | 18-27011-01 | 0.190 ppm |
2018-09-17 | 18-30073-01 | 0.200 ppm |
2018-10-11 | 18-32396-01A | 0.240 ppm |
2018-11-08 | 18-34468-01 | 0.220 ppm |
2018-12-05 | 18-36341-02 | 0.330 ppm |
2019-01-25 | 19-11801-01 | 0.640 ppm |
2019-02-26 | 19-13764-01 | 0.820 ppm |
2019-03-07 | 19-14541-03 | 0.840 ppm |
2019-04-22 | 19-18043-01 | 0.720 ppm |
2019-05-07 | M19-18900-01 | 1.84 ppm |
2019-06-10 | 19-21815-03A | 0.920 ppm |
2019-07-01 | 19-23729-01 | 0.750 ppm |
2019-08-12 | 19-27512-01 | 0.330 ppm |
2019-09-24 | 19-31471-02 | ND |
2019-10-08 | 19-32490-01B | ND |