Nitrate
Cassatt Water Kershaw-lee Company RWA
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 | 0.608 ppm | 14 | 12 | ND - 1.80 ppm |
2015 | 0.698 ppm | 14 | 13 | ND - 2.60 ppm |
2016 | 0.743 ppm | 12 | 11 | ND - 2.70 ppm |
2017 | 0.769 ppm | 12 | 11 | ND - 2.50 ppm |
2018 | 0.800 ppm | 12 | 11 | ND - 2.60 ppm |
2019 | 0.773 ppm | 12 | 11 | ND - 2.60 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 |
---|---|---|
2014-01-22 | AD34864 | 0.380 ppm |
2014-04-23 | AD38832 | 0.550 ppm |
2014-04-23 | AD38844 | 0.710 ppm |
2014-04-23 | AD38843 | 0.820 ppm |
2014-04-23 | AD38842 | 1.40 ppm |
2014-04-23 | AD38841 | 0.520 ppm |
2014-04-23 | AD38840 | 1.20 ppm |
2014-04-23 | AD38839 | 0.520 ppm |
2014-04-23 | AD38837 | ND |
2014-04-23 | AD38836 | ND |
2014-04-23 | AD38835 | 0.0330 ppm |
2014-04-23 | AD38834 | 1.80 ppm |
2014-04-23 | AD38833 | 0.0320 ppm |
2014-04-23 | AD38838 | 0.540 ppm |
2015-04-22 | AD54483 | 0.330 ppm |
2015-04-22 | AD54487 | 0.790 ppm |
2015-04-22 | AD54486 | 1.40 ppm |
2015-04-22 | AD54485 | 0.610 ppm |
2015-04-22 | AD54484 | 0.600 ppm |
2015-04-22 | AD54482 | 0.490 ppm |
2015-04-22 | AD54481 | 2.60 ppm |
2015-04-22 | AD54479 | 0.0370 ppm |
2015-04-22 | AD54478 | 0.260 ppm |
2015-04-22 | AD54477 | 1.20 ppm |
2015-04-22 | AD54476 | 0.700 ppm |
2015-04-22 | AD54475 | 0.540 ppm |
2015-04-22 | AD54474 | 0.210 ppm |
2015-04-22 | AD54480 | ND |
2016-04-19 | AD74643 | ND |
2016-04-19 | AD74641 | 0.470 ppm |
2016-04-19 | AD74642 | 0.450 ppm |
2016-04-19 | AD74644 | 0.340 ppm |
2016-04-25 | AD74832 | 1.20 ppm |
2016-04-25 | AD74831 | 0.790 ppm |
2016-04-25 | AD74828 | 1.40 ppm |
2016-04-25 | AD74829 | 0.740 ppm |
2016-04-25 | AD74830 | 0.560 ppm |
2016-05-18 | AD76189 | 0.240 ppm |
2016-09-15 | AD82548 | 0.0310 ppm |
2016-09-19 | AD82888 | 2.70 ppm |
2017-05-11 | AD94309 | 0.530 ppm |
2017-05-11 | AD94305 | 0.220 ppm |
2017-05-11 | AD94312 | 0.760 ppm |
2017-05-11 | AD94311 | 1.40 ppm |
2017-05-11 | AD94301 | 0.490 ppm |
2017-05-11 | AD94306 | 0.620 ppm |
2017-05-11 | AD94308 | 0.570 ppm |
2017-05-11 | AD94304 | 2.50 ppm |
2017-05-11 | AD94302 | ND |
2017-05-11 | AD94303 | 0.0260 ppm |
2017-05-11 | AD94307 | 1.20 ppm |
2017-05-11 | AD94310 | 0.910 ppm |
2018-05-22 | AE12753 | 0.0310 ppm |
2018-05-22 | AE12752 | 2.60 ppm |
2018-05-22 | AE12751 | 0.650 ppm |
2018-05-22 | AE12750 | 0.650 ppm |
2018-05-22 | AE12749 | 0.250 ppm |
2018-05-22 | AE12754 | ND |
2018-05-23 | AE12743 | 1.30 ppm |
2018-05-23 | AE12744 | 1.50 ppm |
2018-05-23 | AE12745 | 0.830 ppm |
2018-05-23 | AE12746 | 0.460 ppm |
2018-05-23 | AE12747 | 0.550 ppm |
2018-05-23 | AE12748 | 0.780 ppm |
2019-04-24 | AE29258 | 0.460 ppm |
2019-04-24 | AE29260 | 0.850 ppm |
2019-04-24 | AE29257 | 0.570 ppm |
2019-04-24 | AE29261 | 1.40 ppm |
2019-05-01 | AE29682 | 0.480 ppm |
2019-05-01 | AE29692 | 0.0290 ppm |
2019-05-01 | AE29684 | 0.550 ppm |
2019-05-01 | AE29685 | ND |
2019-05-01 | AE29686 | 0.220 ppm |
2019-05-01 | AE29691 | 2.60 ppm |
2019-05-01 | AE29688 | 1.40 ppm |
2019-05-01 | AE29689 | 0.720 ppm |