Nitrate and nitrite
City of North Platte
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.
86
Samples
0
Samples exceeding legal limit (MCL)
86
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 | 3.34 ppm | 16 | 16 | 0.335 ppm - 9.45 ppm |
| 2015 | 2.05 ppm | 12 | 12 | 0.333 ppm - 4.00 ppm |
| 2016 | 2.43 ppm | 13 | 13 | 0.343 ppm - 6.22 ppm |
| 2017 | 2.90 ppm | 14 | 14 | 0.341 ppm - 6.59 ppm |
| 2018 | 1.99 ppm | 16 | 16 | 0.252 ppm - 4.96 ppm |
| 2019 | 1.81 ppm | 15 | 15 | 0.242 ppm - 3.55 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 |
|---|---|---|
| 2014-02-12 | 281040 | 4.49 ppm |
| 2014-05-19 | 293793 | 4.35 ppm |
| 2014-05-21 | 294750 | 3.27 ppm |
| 2014-05-21 | 294751 | 0.335 ppm |
| 2014-05-21 | 294752 | 1.49 ppm |
| 2014-05-21 | 294753 | 3.02 ppm |
| 2014-05-21 | 294754 | 2.07 ppm |
| 2014-05-21 | 294755 | 6.25 ppm |
| 2014-05-21 | 294756 | 3.56 ppm |
| 2014-05-21 | 294757 | 2.19 ppm |
| 2014-05-21 | 294758 | 0.525 ppm |
| 2014-07-23 | 308560 | 4.45 ppm |
| 2014-09-30 | 309032 | 2.81 ppm |
| 2014-09-30 | 309030 | 4.36 ppm |
| 2014-09-30 | 309031 | 0.831 ppm |
| 2014-10-14 | 328072 | 9.45 ppm |
| 2015-06-24 | 356625 | 0.554 ppm |
| 2015-06-24 | 356626 | 3.12 ppm |
| 2015-06-24 | 356627 | 2.49 ppm |
| 2015-06-24 | 356628 | 1.81 ppm |
| 2015-06-24 | 356629 | 2.53 ppm |
| 2015-06-24 | 356630 | 0.333 ppm |
| 2015-06-24 | 356631 | 0.847 ppm |
| 2015-06-24 | 356632 | 2.96 ppm |
| 2015-06-24 | 356624 | 2.38 ppm |
| 2015-09-14 | 373916 | 0.807 ppm |
| 2015-09-14 | 373917 | 4.00 ppm |
| 2015-09-14 | 373918 | 2.73 ppm |
| 2016-06-09 | 1.53 ppm | |
| 2016-06-09 | 0.573 ppm | |
| 2016-06-09 | 2.81 ppm | |
| 2016-06-09 | 0.343 ppm | |
| 2016-06-20 | 6.11 ppm | |
| 2016-06-20 | 2.41 ppm | |
| 2016-06-20 | 2.17 ppm | |
| 2016-07-18 | 4.24 ppm | |
| 2016-07-18 | 0.841 ppm | |
| 2016-07-18 | 0.419 ppm | |
| 2016-07-18 | 3.02 ppm | |
| 2016-10-18 | 6.22 ppm | |
| 2016-10-18 | 0.855 ppm | |
| 2017-01-30 | 6.46 ppm | |
| 2017-04-17 | 6.59 ppm | |
| 2017-06-05 | 3.09 ppm | |
| 2017-06-05 | 2.26 ppm | |
| 2017-06-05 | 0.341 ppm | |
| 2017-06-05 | 1.90 ppm | |
| 2017-06-05 | 2.34 ppm | |
| 2017-06-05 | 2.02 ppm | |
| 2017-07-25 | 3.07 ppm | |
| 2017-08-30 | 4.69 ppm | |
| 2017-08-30 | 2.74 ppm | |
| 2017-08-30 | 0.966 ppm | |
| 2017-10-25 | 3.06 ppm | |
| 2017-11-27 | 1.01 ppm | |
| 2018-01-17 | 534549 | 0.411 ppm |
| 2018-04-23 | 544542 | 0.434 ppm |
| 2018-06-25 | 544540 | 2.30 ppm |
| 2018-06-25 | 544539 | 0.252 ppm |
| 2018-06-25 | 544536 | 2.99 ppm |
| 2018-06-25 | 544541 | 4.09 ppm |
| 2018-06-26 | 544537 | 3.29 ppm |
| 2018-06-26 | 544538 | 2.18 ppm |
| 2018-07-30 | 562381 | 0.430 ppm |
| 2018-08-27 | 562380 | 1.03 ppm |
| 2018-08-27 | 562379 | 4.96 ppm |
| 2018-08-27 | 562377 | 3.56 ppm |
| 2018-08-27 | 562378 | 2.78 ppm |
| 2018-11-26 | 578512 | 1.18 ppm |
| 2018-11-26 | 578513 | 0.421 ppm |
| 2018-11-26 | 580685 | 1.51 ppm |
| 2019-01-23 | 591026 | 0.433 ppm |
| 2019-01-23 | 591027 | 1.53 ppm |
| 2019-04-23 | 603918 | 0.424 ppm |
| 2019-06-18 | 603091 | 3.39 ppm |
| 2019-06-18 | 603095 | 3.55 ppm |
| 2019-06-18 | 603094 | 0.242 ppm |
| 2019-06-18 | 603092 | 2.26 ppm |
| 2019-06-19 | 603093 | 3.14 ppm |
| 2019-06-19 | 603096 | 1.92 ppm |
| 2019-07-01 | 623542 | 1.49 ppm |
| 2019-08-19 | 618057 | 0.437 ppm |
| 2019-09-25 | 618055 | 2.78 ppm |
| 2019-09-25 | 618056 | 1.17 ppm |
| 2019-09-25 | 618053 | 3.27 ppm |
| 2019-12-02 | 638939 | 1.14 ppm |