Nitrate
Glenwood 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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.0135 ppm | 3 | 1 | ND - 0.0405 ppm |
| 2015 | 0.0502 ppm | 3 | 3 | 0.0115 ppm - 0.1000 ppm |
| 2016 | 0.145 ppm | 3 | 3 | 0.0185 ppm - 0.370 ppm |
| 2017 | 0.0537 ppm | 3 | 3 | 0.0244 ppm - 0.0843 ppm |
| 2018 | 0.0312 ppm | 3 | 3 | 0.0224 ppm - 0.0438 ppm |
| 2019 | 0.0199 ppm | 3 | 3 | 0.0139 ppm - 0.0274 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 |
|---|---|---|
| 2014-10-09 | Q1451842005 | 0.0405 ppm |
| 2014-10-09 | Q1451842003 | ND |
| 2014-10-09 | Q1451842002 | ND |
| 2015-06-30 | Q1524626003 | 0.1000 ppm |
| 2015-06-30 | Q1524626002 | 0.0390 ppm |
| 2015-06-30 | Q1524626001 | 0.0115 ppm |
| 2016-10-25 | Q1645490009 | 0.0185 ppm |
| 2016-10-25 | Q1645490004 | 0.370 ppm |
| 2016-10-25 | Q1645490010 | 0.0460 ppm |
| 2017-09-18 | Q1744560022 | 0.0843 ppm |
| 2017-09-18 | Q1744560001 | 0.0244 ppm |
| 2017-09-18 | Q1744560013 | 0.0524 ppm |
| 2018-10-18 | Q1841537004 | 0.0438 ppm |
| 2018-10-18 | Q1841537011 | 0.0224 ppm |
| 2018-10-18 | Q1841537003 | 0.0275 ppm |
| 2019-10-14 | Q1972407008 | 0.0185 ppm |
| 2019-10-14 | Q1972407010 | 0.0274 ppm |
| 2019-10-14 | Q1972407009 | 0.0139 ppm |