Nitrate
Dallas Water Utility
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 | 0.885 ppm | 3 | 3 | 0.424 ppm - 1.62 ppm |
2015 | 0.771 ppm | 3 | 3 | 0.304 ppm - 1.01 ppm |
2016 | 0.426 ppm | 3 | 3 | 0.220 ppm - 0.538 ppm |
2017 | 0.559 ppm | 3 | 3 | 0.501 ppm - 0.620 ppm |
2018 | 0.501 ppm | 3 | 3 | 0.334 ppm - 0.774 ppm |
2019 | 0.704 ppm | 3 | 3 | 0.554 ppm - 0.898 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 |
---|---|---|
2014-02-19 | Q1405420003 | 0.424 ppm |
2014-05-22 | Q1417683006 | 1.62 ppm |
2014-05-22 | Q1417683005 | 0.612 ppm |
2015-01-15 | Q1501302003 | 0.304 ppm |
2015-03-11 | Q1509063002 | 1.000 ppm |
2015-04-20 | Q1514656004 | 1.01 ppm |
2016-01-12 | Q1601371003 | 0.520 ppm |
2016-02-11 | Q1606396003 | 0.538 ppm |
2016-09-14 | Q1637473007 | 0.220 ppm |
2017-01-03 | Q1700179011 | 0.501 ppm |
2017-01-24 | Q1703294002 | 0.555 ppm |
2017-08-23 | Q1737870002 | 0.620 ppm |
2018-01-04 | Q1800411018 | 0.334 ppm |
2018-08-07 | Q1831263010 | 0.774 ppm |
2018-08-07 | Q1831263009 | 0.394 ppm |
2019-01-08 | Q1900829015 | 0.554 ppm |
2019-10-08 | Q1971531001 | 0.659 ppm |
2019-11-07 | Q1976130001 | 0.898 ppm |