Nitrate
Johnson County SUD
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 | 0.0630 ppm | 17 | 16 | ND - 0.329 ppm |
| 2015 | 0.145 ppm | 17 | 16 | ND - 0.811 ppm |
| 2016 | 0.145 ppm | 17 | 15 | ND - 0.790 ppm |
| 2017 | 0.118 ppm | 16 | 16 | 0.0422 ppm - 0.340 ppm |
| 2018 | 0.235 ppm | 16 | 16 | 0.0392 ppm - 0.679 ppm |
| 2019 | 0.448 ppm | 16 | 16 | 0.0310 ppm - 1.91 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 |
|---|---|---|
| 2014-01-28 | Q1402599011 | 0.0660 ppm |
| 2014-01-28 | Q1402599006 | 0.0455 ppm |
| 2014-01-28 | Q1402599005 | ND |
| 2014-01-28 | Q1402599004 | 0.0640 ppm |
| 2014-01-28 | Q1402599003 | 0.0635 ppm |
| 2014-01-28 | Q1402599002 | 0.329 ppm |
| 2014-01-28 | Q1402599001 | 0.0415 ppm |
| 2014-01-28 | Q1402599016 | 0.0430 ppm |
| 2014-01-29 | Q1402807003 | 0.0640 ppm |
| 2014-01-29 | Q1402807002 | 0.0395 ppm |
| 2014-01-29 | Q1402807004 | 0.0390 ppm |
| 2014-01-29 | Q1402807005 | 0.0105 ppm |
| 2014-01-29 | Q1402807006 | 0.0550 ppm |
| 2014-05-29 | Q1418453003 | 0.0560 ppm |
| 2014-05-29 | Q1418453002 | 0.0645 ppm |
| 2014-05-29 | Q1418453001 | 0.0430 ppm |
| 2014-07-22 | Q1430047001 | 0.0470 ppm |
| 2015-02-03 | Q1504045011 | 0.0630 ppm |
| 2015-02-03 | Q1504045010 | 0.0770 ppm |
| 2015-02-03 | Q1504045009 | 0.0510 ppm |
| 2015-04-16 | Q1514524014 | 0.0380 ppm |
| 2015-04-16 | Q1514524010 | 0.0515 ppm |
| 2015-04-16 | Q1514524011 | 0.334 ppm |
| 2015-04-16 | Q1514524012 | ND |
| 2015-04-16 | Q1514524015 | 0.0405 ppm |
| 2015-04-16 | Q1514524016 | 0.329 ppm |
| 2015-04-16 | Q1514524017 | 0.0395 ppm |
| 2015-04-16 | Q1514524020 | 0.258 ppm |
| 2015-08-05 | Q1530835006 | 0.811 ppm |
| 2015-08-05 | Q1530835005 | 0.123 ppm |
| 2015-08-05 | Q1530835004 | 0.0625 ppm |
| 2015-08-05 | Q1530835003 | 0.0710 ppm |
| 2015-08-05 | Q1530835002 | 0.0725 ppm |
| 2015-08-05 | Q1530835001 | 0.0515 ppm |
| 2016-03-17 | Q1611269007 | 0.104 ppm |
| 2016-03-17 | Q1611269001 | 0.0465 ppm |
| 2016-03-17 | Q1611269002 | 0.0535 ppm |
| 2016-03-17 | Q1611269003 | 0.0710 ppm |
| 2016-03-17 | Q1611269004 | 0.390 ppm |
| 2016-03-17 | Q1611269005 | 0.0415 ppm |
| 2016-03-17 | Q1611269006 | 0.0580 ppm |
| 2016-06-01 | Q1621680011 | 0.790 ppm |
| 2016-06-01 | Q1621680010 | 0.0660 ppm |
| 2016-06-01 | Q1621680009 | 0.0455 ppm |
| 2016-11-21 | Q1650944006 | ND |
| 2016-11-21 | Q1650944021 | 0.0590 ppm |
| 2016-11-21 | Q1650944007 | ND |
| 2016-11-21 | Q1650944022 | 0.253 ppm |
| 2016-11-21 | Q1650944008 | 0.304 ppm |
| 2016-11-21 | Q1650944020 | 0.0565 ppm |
| 2016-11-21 | Q1650944005 | 0.118 ppm |
| 2017-02-14 | Q1706687002 | 0.0585 ppm |
| 2017-05-04 | Q1718433010 | 0.0710 ppm |
| 2017-08-16 | Q1736301047 | 0.337 ppm |
| 2017-08-16 | Q1736301046 | 0.0680 ppm |
| 2017-08-16 | Q1736301045 | 0.185 ppm |
| 2017-08-16 | Q1736301018 | 0.0625 ppm |
| 2017-08-16 | Q1736301017 | 0.0750 ppm |
| 2017-08-16 | Q1736301016 | 0.0550 ppm |
| 2017-08-16 | Q1736301015 | 0.0655 ppm |
| 2017-08-16 | Q1736301014 | 0.0600 ppm |
| 2017-11-07 | Q1756990007 | 0.0479 ppm |
| 2017-11-07 | Q1756990001 | 0.0500 ppm |
| 2017-11-07 | Q1756990018 | 0.0690 ppm |
| 2017-11-07 | Q1756990002 | 0.0422 ppm |
| 2017-11-07 | Q1756990026 | 0.308 ppm |
| 2017-11-07 | Q1756990027 | 0.340 ppm |
| 2018-02-21 | Q1807323004 | 0.0549 ppm |
| 2018-02-21 | Q1807323009 | 0.0560 ppm |
| 2018-09-11 | Q1836164001 | 0.474 ppm |
| 2018-12-10 | Q1850236001 | 0.679 ppm |
| 2018-12-10 | Q1850236030 | 0.0500 ppm |
| 2018-12-10 | Q1850236035 | 0.509 ppm |
| 2018-12-10 | Q1850236036 | 0.0411 ppm |
| 2018-12-10 | Q1850236037 | 0.0620 ppm |
| 2018-12-10 | Q1850236038 | 0.0504 ppm |
| 2018-12-10 | Q1850236039 | 0.0533 ppm |
| 2018-12-10 | Q1850236041 | 0.0460 ppm |
| 2018-12-10 | Q1850236042 | 0.0509 ppm |
| 2018-12-10 | Q1850236043 | 0.328 ppm |
| 2018-12-10 | Q1850236002 | 0.0392 ppm |
| 2018-12-10 | Q1850236003 | 0.662 ppm |
| 2018-12-10 | Q1850236040 | 0.600 ppm |
| 2019-02-20 | Q1907529014 | 0.0329 ppm |
| 2019-02-20 | Q1907529032 | 0.553 ppm |
| 2019-02-20 | Q1907529013 | 0.0421 ppm |
| 2019-02-20 | Q1907529033 | 0.0720 ppm |
| 2019-02-20 | Q1907529034 | 0.0776 ppm |
| 2019-02-20 | Q1907529015 | 0.0756 ppm |
| 2019-02-20 | Q1907529035 | 0.0670 ppm |
| 2019-02-20 | Q1907529037 | 0.0469 ppm |
| 2019-05-21 | Q1927429017 | 1.62 ppm |
| 2019-05-21 | Q1927429016 | 0.0310 ppm |
| 2019-05-21 | Q1927429015 | 1.91 ppm |
| 2019-05-21 | Q1927429014 | 0.920 ppm |
| 2019-05-21 | Q1927429013 | 0.0548 ppm |
| 2019-05-21 | Q1927429012 | 0.0528 ppm |
| 2019-05-21 | Q1927429011 | 1.44 ppm |
| 2019-07-31 | Q1949948001 | 0.167 ppm |