Nitrate and nitrite
City of Moses Lake
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.618 ppm | 19 | 11 | ND - 4.76 ppm |
2015 | 0.804 ppm | 18 | 10 | ND - 7.28 ppm |
2016 | 1.41 ppm | 21 | 10 | ND - 8.27 ppm |
2017 | 0.741 ppm | 18 | 9 | ND - 5.24 ppm |
2018 | 0.410 ppm | 18 | 10 | ND - 2.79 ppm |
2019 | 1.45 ppm | 19 | 13 | ND - 6.34 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 |
---|---|---|
2014-01-15 | 00978 | 4.76 ppm |
2014-05-19 | 10162 | ND |
2014-05-19 | 10163 | ND |
2014-06-26 | 15072 | ND |
2014-06-26 | 15074 | 0.120 ppm |
2014-08-21 | 21068 | 0.0800 ppm |
2014-09-04 | 22691 | ND |
2014-10-07 | 26427 | ND |
2014-10-07 | 26428 | 0.0900 ppm |
2014-10-07 | 26429 | 1.89 ppm |
2014-10-07 | 26430 | ND |
2014-10-07 | 26431 | 0.590 ppm |
2014-10-07 | 26432 | 0.0700 ppm |
2014-10-07 | 26432 | 0.0700 ppm |
2014-10-07 | 26433 | 1.29 ppm |
2014-10-07 | 26434 | ND |
2014-10-07 | 26682 | 2.48 ppm |
2014-10-07 | 26683 | 0.310 ppm |
2014-10-07 | 26691 | ND |
2015-01-13 | 00740 | 7.28 ppm |
2015-03-10 | 05318 | 1.32 ppm |
2015-03-10 | 05319 | 0.350 ppm |
2015-03-11 | 05442 | 0.650 ppm |
2015-05-04 | 10872 | ND |
2015-05-04 | 10873 | ND |
2015-06-03 | 15148 | 0.120 ppm |
2015-09-09 | 27417 | ND |
2015-09-09 | 27415 | ND |
2015-10-03 | 34287 | ND |
2015-11-03 | 34284 | 2.29 ppm |
2015-11-03 | 34283 | 0.550 ppm |
2015-11-03 | 34111 | ND |
2015-11-03 | 34110 | 0.950 ppm |
2015-11-03 | 34109 | 0.790 ppm |
2015-11-03 | 34108 | ND |
2015-11-03 | 34107 | ND |
2015-12-08 | 36782 | 0.180 ppm |
2016-01-06 | 8.27 ppm | |
2016-03-08 | 0.700 ppm | |
2016-03-08 | 2.62 ppm | |
2016-03-28 | 0.220 ppm | |
2016-03-28 | 0.900 ppm | |
2016-04-18 | ND | |
2016-04-18 | ND | |
2016-05-16 | ND | |
2016-05-16 | ND | |
2016-05-16 | ND | |
2016-05-16 | ND | |
2016-06-20 | 4.57 ppm | |
2016-06-20 | ND | |
2016-06-20 | ND | |
2016-06-20 | ND | |
2016-06-20 | 0.0800 ppm | |
2016-08-16 | 1.40 ppm | |
2016-09-20 | ND | |
2016-09-22 | ND | |
2016-09-28 | 4.91 ppm | |
2016-10-31 | 5.98 ppm | |
2017-02-07 | 5.24 ppm | |
2017-03-29 | 1.58 ppm | |
2017-03-29 | 0.640 ppm | |
2017-03-30 | 2.53 ppm | |
2017-04-06 | ND | |
2017-04-06 | 0.0700 ppm | |
2017-05-17 | ND | |
2017-05-17 | 1.17 ppm | |
2017-05-18 | ND | |
2017-06-20 | ND | |
2017-06-26 | ND | |
2017-06-26 | ND | |
2017-08-09 | ND | |
2017-11-06 | ND | |
2017-11-20 | ND | |
2017-11-30 | 0.660 ppm | |
2017-12-14 | 1.000 ppm | |
2017-12-21 | 0.440 ppm | |
2018-03-28 | ND | |
2018-03-28 | ND | |
2018-03-28 | 1.63 ppm | |
2018-03-29 | ND | |
2018-03-29 | 0.280 ppm | |
2018-05-15 | 2.79 ppm | |
2018-06-28 | 0.0900 ppm | |
2018-07-02 | ND | |
2018-07-05 | 0.120 ppm | |
2018-07-05 | 1.11 ppm | |
2018-07-09 | 0.0800 ppm | |
2018-07-09 | ND | |
2018-08-13 | 0.840 ppm | |
2018-09-10 | 0.180 ppm | |
2018-09-10 | ND | |
2018-09-10 | ND | |
2018-09-11 | 0.260 ppm | |
2018-12-10 | ND | |
2019-02-07 | 6.34 ppm | |
2019-03-26 | ND | |
2019-03-26 | ND | |
2019-03-26 | 0.460 ppm | |
2019-03-27 | 1.77 ppm | |
2019-04-02 | 0.660 ppm | |
2019-07-02 | 4.35 ppm | |
2019-07-02 | 2.53 ppm | |
2019-07-02 | 2.07 ppm | |
2019-07-02 | ND | |
2019-07-02 | ND | |
2019-07-02 | ND | |
2019-09-10 | 1.14 ppm | |
2019-10-08 | ND | |
2019-10-08 | 0.110 ppm | |
2019-10-09 | 0.0700 ppm | |
2019-11-12 | 2.12 ppm | |
2019-11-20 | 5.65 ppm | |
2019-12-03 | 0.240 ppm |