Nitrate
Pritchett Water Supply Corporation
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 |
|---|---|---|---|---|
| 2014 | 0.0884 ppm | 13 | 13 | 0.0180 ppm - 0.570 ppm |
| 2015 | 0.0742 ppm | 13 | 13 | 0.0215 ppm - 0.327 ppm |
| 2016 | 0.0687 ppm | 13 | 13 | 0.0245 ppm - 0.280 ppm |
| 2017 | 0.0819 ppm | 13 | 13 | 0.0286 ppm - 0.298 ppm |
| 2018 | 0.0660 ppm | 12 | 12 | 0.0335 ppm - 0.254 ppm |
| 2019 | 0.0970 ppm | 12 | 12 | 0.0216 ppm - 0.634 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 | Q1402022016 | 0.0320 ppm |
| 2014-01-22 | Q1402022015 | 0.0525 ppm |
| 2014-01-22 | Q1402022014 | 0.0235 ppm |
| 2014-01-22 | Q1402022013 | 0.0275 ppm |
| 2014-01-22 | Q1402022012 | 0.162 ppm |
| 2014-01-22 | Q1402022006 | 0.0220 ppm |
| 2014-01-22 | Q1402022005 | 0.0180 ppm |
| 2014-06-25 | Q1423783026 | 0.0670 ppm |
| 2014-06-25 | Q1423783018 | 0.0345 ppm |
| 2014-06-25 | Q1423783024 | 0.0510 ppm |
| 2014-06-25 | Q1423783025 | 0.570 ppm |
| 2014-06-25 | Q1423783027 | 0.0470 ppm |
| 2014-06-25 | Q1423783028 | 0.0420 ppm |
| 2015-03-12 | Q1509329002 | 0.0300 ppm |
| 2015-06-23 | Q1523409008 | 0.102 ppm |
| 2015-06-23 | Q1523409001 | 0.0215 ppm |
| 2015-06-23 | Q1523409002 | 0.0570 ppm |
| 2015-06-23 | Q1523409003 | 0.0615 ppm |
| 2015-06-23 | Q1523409004 | 0.0620 ppm |
| 2015-06-23 | Q1523409005 | 0.327 ppm |
| 2015-06-23 | Q1523409006 | 0.0440 ppm |
| 2015-06-23 | Q1523409007 | 0.0735 ppm |
| 2015-06-23 | Q1523409009 | 0.0555 ppm |
| 2015-06-23 | Q1523409010 | 0.0365 ppm |
| 2015-06-23 | Q1523409011 | 0.0515 ppm |
| 2015-06-23 | Q1523409012 | 0.0430 ppm |
| 2016-02-25 | Q1608022006 | 0.280 ppm |
| 2016-02-25 | Q1608022005 | 0.0520 ppm |
| 2016-02-25 | Q1608022004 | 0.0735 ppm |
| 2016-02-25 | Q1608022003 | 0.0245 ppm |
| 2016-02-25 | Q1608022002 | 0.0710 ppm |
| 2016-02-25 | Q1608022001 | 0.0460 ppm |
| 2016-05-25 | Q1620685002 | 0.0280 ppm |
| 2016-10-24 | Q1645066005 | 0.0355 ppm |
| 2016-10-24 | Q1645066027 | 0.0525 ppm |
| 2016-10-24 | Q1645066007 | 0.114 ppm |
| 2016-10-24 | Q1645066028 | 0.0445 ppm |
| 2016-10-24 | Q1645066023 | 0.0400 ppm |
| 2016-10-24 | Q1645066004 | 0.0315 ppm |
| 2017-03-02 | Q1709045003 | 0.0419 ppm |
| 2017-06-13 | Q1724796002 | 0.0286 ppm |
| 2017-06-13 | Q1724796003 | 0.0508 ppm |
| 2017-08-29 | Q1739153018 | 0.0944 ppm |
| 2017-08-29 | Q1739153005 | 0.0639 ppm |
| 2017-08-29 | Q1739153036 | 0.0697 ppm |
| 2017-08-29 | Q1739153006 | 0.298 ppm |
| 2017-08-29 | Q1739153019 | 0.0657 ppm |
| 2017-08-29 | Q1739153007 | 0.178 ppm |
| 2017-08-29 | Q1739153051 | 0.0349 ppm |
| 2017-08-29 | Q1739153035 | 0.0379 ppm |
| 2017-08-30 | Q1739907007 | 0.0439 ppm |
| 2017-08-30 | Q1739907003 | 0.0573 ppm |
| 2018-06-05 | Q1822214043 | 0.0825 ppm |
| 2018-06-05 | Q1822214036 | 0.0396 ppm |
| 2018-06-05 | Q1822214037 | 0.0496 ppm |
| 2018-06-05 | Q1822214038 | 0.0694 ppm |
| 2018-06-05 | Q1822214039 | 0.0479 ppm |
| 2018-06-05 | Q1822214040 | 0.254 ppm |
| 2018-06-05 | Q1822214041 | 0.0341 ppm |
| 2018-06-05 | Q1822214044 | 0.0499 ppm |
| 2018-06-05 | Q1822214045 | 0.0375 ppm |
| 2018-06-05 | Q1822214046 | 0.0411 ppm |
| 2018-06-05 | Q1822214047 | 0.0335 ppm |
| 2018-06-05 | Q1822214042 | 0.0527 ppm |
| 2019-10-15 | Q1972651023 | 0.0552 ppm |
| 2019-10-15 | Q1972651041 | 0.0216 ppm |
| 2019-10-15 | Q1972651011 | 0.0377 ppm |
| 2019-10-15 | Q1972651047 | 0.0425 ppm |
| 2019-10-15 | Q1972651025 | 0.0502 ppm |
| 2019-10-15 | Q1972651013 | 0.0533 ppm |
| 2019-10-15 | Q1972651022 | 0.0486 ppm |
| 2019-10-15 | Q1972651042 | 0.0666 ppm |
| 2019-10-15 | Q1972651043 | 0.634 ppm |
| 2019-10-15 | Q1972651044 | 0.0669 ppm |
| 2019-10-15 | Q1972651045 | 0.0453 ppm |
| 2019-10-15 | Q1972651010 | 0.0415 ppm |