Nitrate and nitrite
Fort Leonard Wood
Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.
55
Samples
0
Samples exceeding legal limit (MCL)
30
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 | 0.555 ppm | 9 | 8 | ND - 2.79 ppm |
| 2015 | 0.727 ppm | 9 | 8 | ND - 3.56 ppm |
| 2016 | 0.484 ppm | 9 | 8 | ND - 2.68 ppm |
| 2017 | 0.540 ppm | 9 | 8 | ND - 2.53 ppm |
| 2018 | 0.521 ppm | 9 | 9 | 0.0180 ppm - 2.49 ppm |
| 2019 | 0.786 ppm | 10 | 10 | 0.0130 ppm - 3.48 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.
EPA Maximum Contaminant
Level (MCL) 10 ppm
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-15 | AC20173 | 1.23 ppm |
| 2014-04-15 | AC20174 | 0.290 ppm |
| 2014-04-15 | AC20175 | 0.0940 ppm |
| 2014-04-15 | AC20176 | 0.330 ppm |
| 2014-04-15 | AC20177 | 0.0310 ppm |
| 2014-04-15 | AC20178 | 2.79 ppm |
| 2014-04-15 | AC20179 | 0.0360 ppm |
| 2014-04-15 | AC20180 | 0.190 ppm |
| 2014-04-15 | AC20172 | ND |
| 2015-01-27 | AC40664 | 0.250 ppm |
| 2015-12-21 | AC64579 | 0.0160 ppm |
| 2015-12-21 | AC64575 | 3.56 ppm |
| 2015-12-21 | AC64576 | 2.08 ppm |
| 2015-12-21 | AC64578 | ND |
| 2015-12-21 | AC64574 | 0.160 ppm |
| 2015-12-21 | AC64577 | 0.0400 ppm |
| 2015-12-21 | AC64580 | 0.290 ppm |
| 2015-12-21 | AC64573 | 0.150 ppm |
| 2016-01-11 | AC65184 | 0.610 ppm |
| 2016-01-19 | AC65383 | 0.140 ppm |
| 2016-01-19 | AC65387 | 0.120 ppm |
| 2016-01-19 | AC65390 | 0.0270 ppm |
| 2016-01-19 | AC65385 | 0.0360 ppm |
| 2016-01-19 | AC65384 | 2.68 ppm |
| 2016-01-19 | AC65386 | 0.280 ppm |
| 2016-01-19 | AC65388 | 0.460 ppm |
| 2016-01-19 | AC65389 | ND |
| 2017-01-10 | AC89270 | 1.50 ppm |
| 2017-01-10 | AC89271 | 0.300 ppm |
| 2017-01-10 | AC89266 | 0.160 ppm |
| 2017-01-10 | AC89265 | 2.53 ppm |
| 2017-01-10 | AC89272 | 0.110 ppm |
| 2017-01-10 | AC89269 | ND |
| 2017-01-10 | AC89268 | 0.0130 ppm |
| 2017-01-10 | AC89267 | 0.0250 ppm |
| 2017-01-10 | AC89273 | 0.220 ppm |
| 2018-01-09 | AD11539 | 0.0990 ppm |
| 2018-01-09 | AD11538 | 0.0180 ppm |
| 2018-01-09 | AD11537 | 2.49 ppm |
| 2018-01-09 | AD11536 | 1.40 ppm |
| 2018-01-09 | AD11535 | 0.260 ppm |
| 2018-01-09 | AD11534 | 0.0370 ppm |
| 2018-01-09 | AD11533 | 0.140 ppm |
| 2018-01-09 | AD11532 | 0.0220 ppm |
| 2018-01-28 | AD11498 | 0.220 ppm |
| 2019-01-14 | AD37859 | 0.930 ppm |
| 2019-01-14 | AD38061 | 0.310 ppm |
| 2019-01-14 | AD38062 | 0.1000 ppm |
| 2019-01-14 | AD38063 | 3.48 ppm |
| 2019-01-14 | AD38064 | 0.0200 ppm |
| 2019-01-14 | AD38065 | 0.0190 ppm |
| 2019-01-14 | AD38066 | 0.160 ppm |
| 2019-01-14 | AD38067 | 2.54 ppm |
| 2019-01-14 | AD38068 | 0.290 ppm |
| 2019-01-14 | AD38069 | 0.0130 ppm |