Nitrate
West Farmington Village 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.
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 | 0.0931 ppm | 12 | 3 | ND - 0.452 ppm |
| 2015 | 0.0866 ppm | 12 | 4 | ND - 0.368 ppm |
| 2016 | 0.334 ppm | 12 | 9 | ND - 0.740 ppm |
| 2017 | 0.419 ppm | 12 | 12 | 0.238 ppm - 1.04 ppm |
| 2018 | 0.546 ppm | 12 | 12 | 0.226 ppm - 1.24 ppm |
| 2019 | 0.475 ppm | 10 | 10 | 0.334 ppm - 0.735 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 |
|---|---|---|
| 2014-01-13 | 14A0508-02 | 0.307 ppm |
| 2014-02-04 | 14B0194-02 | 0.358 ppm |
| 2014-03-05 | 14C0271-03 | 0.452 ppm |
| 2014-04-22 | 14D1188-03 | ND |
| 2014-05-07 | 14E0437-05 | ND |
| 2014-06-16 | 14F0950-01 | ND |
| 2014-07-28 | 14G1594-03 | ND |
| 2014-08-26 | 14H1427-02 | ND |
| 2014-09-24 | 14I1459-02 | ND |
| 2014-10-29 | 14J1659-01 | ND |
| 2014-11-24 | 14K1150-02 | ND |
| 2014-12-15 | 14L0961-02 | ND |
| 2015-01-29 | 15A1365-03 | 0.236 ppm |
| 2015-02-05 | 15B0331-03 | 0.218 ppm |
| 2015-03-05 | 15C0368-03 | 0.368 ppm |
| 2015-04-09 | 15D0622-01 | 0.217 ppm |
| 2015-05-06 | 15E0352-02 | ND |
| 2015-06-17 | 15-18313-02 | ND |
| 2015-07-01 | 15-19049-03 | ND |
| 2015-08-05 | 15-21093-01 | ND |
| 2015-09-03 | 15-22823-03 | ND |
| 2015-09-30 | 15-24305-01 | ND |
| 2015-11-04 | 15-26332-03 | ND |
| 2015-12-02 | 15-27667-01 | ND |
| 2016-01-07 | 16-10356-01 | 0.190 ppm |
| 2016-02-03 | 16-11698-01 | 0.460 ppm |
| 2016-03-07 | 20160992 | 0.499 ppm |
| 2016-04-05 | 20161418 | 0.229 ppm |
| 2016-05-04 | 20161849 | ND |
| 2016-06-07 | 20161951 | ND |
| 2016-07-06 | 20162062 | ND |
| 2016-08-02 | 20162156 | 0.503 ppm |
| 2016-09-07 | 20162356 | 0.427 ppm |
| 2016-10-05 | 20162491 | 0.498 ppm |
| 2016-11-02 | 20162590 | 0.465 ppm |
| 2016-12-20 | 20162651 | 0.740 ppm |
| 2017-01-04 | 20170007 | 1.04 ppm |
| 2017-02-07 | 20170139 | 0.845 ppm |
| 2017-03-08 | 20170210 | 0.395 ppm |
| 2017-04-05 | 20170238 | 0.350 ppm |
| 2017-05-02 | 20170284 | 0.238 ppm |
| 2017-06-07 | 20170354 | 0.248 ppm |
| 2017-07-05 | 20170453 | 0.298 ppm |
| 2017-08-09 | 20170671 | 0.302 ppm |
| 2017-09-06 | 20170852 | 0.239 ppm |
| 2017-10-04 | 20170921 | 0.345 ppm |
| 2017-11-01 | 20170963 | 0.331 ppm |
| 2017-12-06 | 20171053 | 0.399 ppm |
| 2018-01-03 | 20180007 | 0.604 ppm |
| 2018-02-07 | 20180129 | 1.24 ppm |
| 2018-03-07 | 20170173 | 0.982 ppm |
| 2018-04-04 | 20180219 | 0.445 ppm |
| 2018-05-02 | 20180289 | 0.226 ppm |
| 2018-06-06 | 20180396 | 0.271 ppm |
| 2018-07-11 | 20180611 | 0.368 ppm |
| 2018-08-08 | 20180819N | 0.523 ppm |
| 2018-09-05 | 20180935A | 0.528 ppm |
| 2018-10-10 | 20181075A | 0.476 ppm |
| 2018-11-06 | 20181168 | 0.363 ppm |
| 2018-12-05 | 20181219 | 0.530 ppm |
| 2019-01-09 | 20190022 | 0.513 ppm |
| 2019-02-06 | 20190099 | 0.615 ppm |
| 2019-03-06 | 20190154 | 0.735 ppm |
| 2019-04-03 | 20190219 | 0.564 ppm |
| 2019-05-08 | 20190309 | 0.413 ppm |
| 2019-06-05 | 20190382 | 0.509 ppm |
| 2019-07-10 | 20190497 | 0.353 ppm |
| 2019-08-06 | 20190686 | 0.365 ppm |
| 2019-09-03 | 20190812 | 0.350 ppm |
| 2019-10-01 | 20191029 | 0.334 ppm |