Nitrate
Conneaut
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.
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 | 0.211 ppm | 12 | 11 | ND - 0.450 ppm |
2015 | 0.215 ppm | 12 | 10 | ND - 0.540 ppm |
2016 | 0.264 ppm | 12 | 10 | ND - 0.700 ppm |
2017 | 0.312 ppm | 12 | 10 | ND - 0.620 ppm |
2018 | 0.267 ppm | 12 | 11 | ND - 0.660 ppm |
2019 | 0.337 ppm | 10 | 9 | ND - 0.670 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 |
---|---|---|
2014-01-08 | 14-10270-03 | 0.200 ppm |
2014-02-10 | 14-11591-01 | 0.220 ppm |
2014-03-03 | 14-12411-01 | 0.170 ppm |
2014-04-01 | 14-13859-01A | 0.220 ppm |
2014-05-12 | 14-15718-04 | 0.450 ppm |
2014-06-03 | 14-16845-03 | 0.380 ppm |
2014-07-07 | 14-18773-03 | 0.310 ppm |
2014-08-11 | 14-20620-01 | 0.160 ppm |
2014-09-03 | 14-22002-03 | 0.140 ppm |
2014-10-06 | 14-23724-03 | ND |
2014-11-10 | 14-25415-03 | 0.120 ppm |
2014-12-01 | 14-26241-03 | 0.160 ppm |
2015-01-06 | 15-10128-01A | 0.240 ppm |
2015-02-09 | 15-11541-07 | 0.250 ppm |
2015-03-11 | 15-13188-01 | 0.210 ppm |
2015-04-06 | 15-14152-03A | 0.190 ppm |
2015-05-12 | 15-16059-06 | 0.430 ppm |
2015-06-01 | 15-17031-01 | 0.540 ppm |
2015-07-06 | 15-19117-03 | 0.250 ppm |
2015-08-10 | 15-21307-07 | 0.190 ppm |
2015-09-14 | 15-23377-03 | ND |
2015-10-13 | 15-25066-03 | ND |
2015-11-10 | 15-26600-03 | 0.130 ppm |
2015-12-07 | 15-27846-03 | 0.150 ppm |
2016-01-12 | 16-10596-04A | 0.330 ppm |
2016-02-09 | 16-11919-04 | 0.260 ppm |
2016-03-01 | 16-12871-03 | 0.140 ppm |
2016-04-04 | 16-14656-01A | 0.700 ppm |
2016-05-09 | 16-16625-07 | 0.200 ppm |
2016-06-06 | 16-18090-03 | 0.550 ppm |
2016-07-05 | 16-19992-03 | 0.490 ppm |
2016-08-08 | 16-22530-03 | 0.240 ppm |
2016-09-06 | 16-24473-03 | 0.1000 ppm |
2016-10-04 | 16-26513-03 | ND |
2016-11-08 | 16-28827-03 | ND |
2016-12-06 | 16-30259-03 | 0.160 ppm |
2017-01-11 | 17-10609-03A | 0.350 ppm |
2017-02-08 | 17-12155-03 | 0.400 ppm |
2017-03-07 | 17-13834-03 | 0.580 ppm |
2017-04-04 | 17-15518-03A | 0.470 ppm |
2017-05-10 | 17-18070-03 | 0.620 ppm |
2017-06-06 | 17-19693-03 | 0.400 ppm |
2017-07-05 | 17-21845-03 | 0.460 ppm |
2017-08-08 | 17-24708-03 | 0.150 ppm |
2017-09-05 | 17-26763-03 | ND |
2017-10-10 | 17-29500-03 | ND |
2017-11-08 | 17-31748-03 | 0.170 ppm |
2017-12-05 | 17-32993-03 | 0.140 ppm |
2018-01-09 | 18-10444-03A | 0.260 ppm |
2018-02-06 | 18-12030-03 | 0.140 ppm |
2018-03-06 | 18-13829-03 | 0.200 ppm |
2018-04-10 | 18-16397-03A | 0.300 ppm |
2018-05-08 | 18-18458-03 | 0.660 ppm |
2018-06-05 | 18-20572-03 | 0.320 ppm |
2018-07-05 | 18-23608-03 | 0.480 ppm |
2018-08-08 | 18-26701-03 | 0.270 ppm |
2018-09-04 | 18-28856-03 | 0.160 ppm |
2018-10-02 | 18-31539-03 | ND |
2018-11-13 | 18-34784-03 | 0.210 ppm |
2018-12-04 | 18-36185-03 | 0.200 ppm |
2019-01-08 | 19-10587-02A | 0.280 ppm |
2019-02-12 | 19-12880-04 | 0.670 ppm |
2019-03-12 | 19-14868-03 | 0.270 ppm |
2019-04-09 | 19-17028-03A | 0.450 ppm |
2019-05-13 | 19-19550-05 | 0.310 ppm |
2019-06-04 | 19-21227-03 | 0.630 ppm |
2019-07-02 | 19-23925-03 | 0.430 ppm |
2019-08-12 | 19-27487-03 | 0.200 ppm |
2019-09-17 | 19-30784-03 | 0.130 ppm |
2019-10-08 | 19-32593-03 | ND |