Nitrate
City of Anna
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 | 0.0393 ppm | 4 | 4 | 0.0225 ppm - 0.0570 ppm |
| 2015 | 0.309 ppm | 4 | 4 | 0.0335 ppm - 1.02 ppm |
| 2016 | 0.101 ppm | 4 | 4 | 0.0195 ppm - 0.274 ppm |
| 2017 | 0.210 ppm | 4 | 4 | 0.0442 ppm - 0.574 ppm |
| 2018 | 0.315 ppm | 4 | 4 | 0.0386 ppm - 0.615 ppm |
| 2019 | 0.509 ppm | 4 | 4 | 0.0342 ppm - 0.879 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 |
|---|---|---|
| 2014-05-22 | Q1417366004 | 0.0330 ppm |
| 2014-05-22 | Q1417366003 | 0.0445 ppm |
| 2014-05-22 | Q1417366002 | 0.0225 ppm |
| 2014-05-22 | Q1417366001 | 0.0570 ppm |
| 2015-06-29 | Q1524455020 | 0.0335 ppm |
| 2015-06-29 | Q1524455019 | 1.02 ppm |
| 2015-06-29 | Q1524455018 | 0.0745 ppm |
| 2015-06-29 | Q1524455017 | 0.106 ppm |
| 2016-03-16 | Q1611301001 | 0.0195 ppm |
| 2016-05-25 | Q1620634001 | 0.0785 ppm |
| 2016-05-25 | Q1620634003 | 0.0320 ppm |
| 2016-05-25 | Q1620634002 | 0.274 ppm |
| 2017-03-29 | Q1713141029 | 0.0442 ppm |
| 2017-03-29 | Q1713141028 | 0.574 ppm |
| 2017-03-29 | Q1713141027 | 0.166 ppm |
| 2017-03-29 | Q1713141026 | 0.0563 ppm |
| 2018-03-21 | Q1811343005 | 0.0386 ppm |
| 2018-03-21 | Q1811343020 | 0.615 ppm |
| 2018-03-21 | Q1811343010 | 0.515 ppm |
| 2018-03-21 | Q1811343015 | 0.0900 ppm |
| 2019-02-14 | Q1907030006 | 0.547 ppm |
| 2019-02-14 | Q1907030008 | 0.879 ppm |
| 2019-02-14 | Q1907030007 | 0.576 ppm |
| 2019-08-15 | Q1955953001 | 0.0342 ppm |