Nitrate
Westwood Beach
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 | 0.0407 ppm | 3 | 3 | 0.0345 ppm - 0.0520 ppm |
| 2015 | 0.0388 ppm | 3 | 3 | 0.0310 ppm - 0.0435 ppm |
| 2016 | ND | 3 | 0 | ND |
| 2017 | 0.0320 ppm | 3 | 3 | 0.0291 ppm - 0.0374 ppm |
| 2018 | 0.0414 ppm | 3 | 3 | 0.0378 ppm - 0.0484 ppm |
| 2019 | 0.0530 ppm | 3 | 3 | 0.0365 ppm - 0.0615 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 |
|---|---|---|
| 2014-07-15 | Q1427928003 | 0.0355 ppm |
| 2014-07-15 | Q1427928002 | 0.0345 ppm |
| 2014-07-15 | Q1427928001 | 0.0520 ppm |
| 2015-07-22 | Q1528496012 | 0.0420 ppm |
| 2015-07-22 | Q1528496011 | 0.0310 ppm |
| 2015-07-22 | Q1528496010 | 0.0435 ppm |
| 2016-12-06 | Q1653109002 | ND |
| 2016-12-06 | Q1653109003 | ND |
| 2016-12-06 | Q1653109008 | ND |
| 2017-10-02 | Q1748077003 | 0.0291 ppm |
| 2017-10-02 | Q1748077002 | 0.0295 ppm |
| 2017-10-02 | Q1748077001 | 0.0374 ppm |
| 2018-10-10 | Q1840455010 | 0.0484 ppm |
| 2018-10-10 | Q1840455003 | 0.0378 ppm |
| 2018-10-10 | Q1840455009 | 0.0379 ppm |
| 2019-06-13 | Q1935800002 | 0.0610 ppm |
| 2019-06-13 | Q1935800004 | 0.0615 ppm |
| 2019-06-13 | Q1935800003 | 0.0365 ppm |