Nitrate
Palm Beach County Water Utilities
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 | 0.0300 ppm | 4 | 3 | ND - 0.0500 ppm |
2015 | 0.0960 ppm | 4 | 4 | 0.0250 ppm - 0.282 ppm |
2016 | 0.0375 ppm | 4 | 3 | ND - 0.0620 ppm |
2017 | 0.0303 ppm | 4 | 3 | ND - 0.0460 ppm |
2018 | 0.151 ppm | 4 | 3 | ND - 0.530 ppm |
2019 | 0.200 ppm | 4 | 4 | 0.0300 ppm - 0.680 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 | Result |
---|---|
2014-05-15 | 0.0400 ppm |
2014-05-20 | 0.0500 ppm |
2014-05-22 | ND |
2014-05-29 | 0.0300 ppm |
2015-06-16 | 0.282 ppm |
2015-06-16 | 0.0250 ppm |
2015-06-17 | 0.0360 ppm |
2015-06-22 | 0.0410 ppm |
2016-05-04 | 0.0620 ppm |
2016-05-11 | 0.0510 ppm |
2016-05-17 | 0.0370 ppm |
2016-05-24 | ND |
2017-05-03 | 0.0340 ppm |
2017-05-10 | 0.0460 ppm |
2017-05-17 | 0.0410 ppm |
2017-05-30 | ND |
2018-08-13 | 0.0420 ppm |
2018-08-13 | ND |
2018-08-13 | 0.0310 ppm |
2018-08-13 | 0.530 ppm |
2019-05-20 | 0.0300 ppm |
2019-05-20 | 0.0420 ppm |
2019-05-20 | 0.0490 ppm |
2019-05-21 | 0.680 ppm |