Know Your Environment. Protect Your Health.

Nitrate

City of Coeur D Alene

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.

 

89

Samples

0

Samples exceeding legal limit (MCL)

81

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.01 ppm1615ND - 2.46 ppm
20190.768 ppm1411ND - 2.07 ppm
20200.954 ppm1312ND - 1.95 ppm
20210.856 ppm1615ND - 1.79 ppm
20220.941 ppm1413ND - 2.63 ppm
20230.761 ppm1615ND - 1.72 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG 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

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
2018-03-14I1803140530020.657 ppm
2018-03-14I1803140530031.52 ppm
2018-07-03N201807003720.520 ppm
2018-07-03N201807003710.950 ppm
2018-07-03N201807003731.02 ppm
2018-07-03N201807003750.950 ppm
2018-07-03N201807003762.46 ppm
2018-07-03N201807003771.49 ppm
2018-07-03N20180700370.790 ppm
2018-07-12N1952711.52 ppm
2018-07-12N195272ND
2018-07-18I1807180590020.974 ppm
2018-07-18I1807180590030.800 ppm
2018-07-27N1957550.830 ppm
2018-11-07I1811070830020.969 ppm
2018-11-07I1811070830030.722 ppm
2019-03-13I1903130550020.727 ppm
2019-05-23I2041871.55 ppm
2019-05-23I2041892.07 ppm
2019-05-23I2041861.85 ppm
2019-05-29I2042880.450 ppm
2019-05-29I2042870.820 ppm
2019-05-29I204291ND
2019-06-03I2043600.582 ppm
2019-06-03I2043610.452 ppm
2019-06-03I2043620.731 ppm
2019-07-17I1907170530030.824 ppm
2019-07-17I1907170530020.702 ppm
2019-09-05I208218ND
2019-10-07N209673ND
2020-05-04N2153790.367 ppm
2020-05-04N2153781.17 ppm
2020-05-11N2156321.18 ppm
2020-05-19N2158870.751 ppm
2020-06-11N2167411.95 ppm
2020-07-13N2178420.698 ppm
2020-07-13N2178440.852 ppm
2020-07-14N2179241.75 ppm
2020-07-14N2179211.39 ppm
2020-07-14N2179230.620 ppm
2020-07-14N2179221.16 ppm
2020-07-16N2180760.520 ppm
2020-07-21M218202ND
2021-03-16N2261800.929 ppm
2021-03-18N2262501.08 ppm
2021-05-11N2280510.762 ppm
2021-06-17N229236ND
2021-06-17N2292350.275 ppm
2021-07-19N2303050.638 ppm
2021-07-19N2303030.579 ppm
2021-07-19N2303041.05 ppm
2021-07-19N2303061.79 ppm
2021-07-19N2303020.401 ppm
2021-07-20N2303291.43 ppm
2021-09-02IMBI0112030.941 ppm
2021-09-02IMBI0112020.618 ppm
2021-12-14NMBL0482030.924 ppm
2021-12-14NMBL0482020.563 ppm
2021-12-29N2367201.71 ppm
2022-03-24IMCC0804020.426 ppm
2022-03-24IMCC0804030.994 ppm
2022-04-26I2399930.345 ppm
2022-04-27I2401380.959 ppm
2022-04-27I240141ND
2022-04-27I2401430.626 ppm
2022-04-27I2401830.374 ppm
2022-04-28I2401872.63 ppm
2022-05-02I2405931.91 ppm
2022-05-02I2406150.371 ppm
2022-05-02I2406201.36 ppm
2022-05-02I2405830.802 ppm
2022-08-10I2447601.77 ppm
2022-11-09PHDMCK0310020.609 ppm
2023-02-13N2519861.72 ppm
2023-03-23IMDC0834020.606 ppm
2023-05-16N2549471.71 ppm
2023-05-16N2549480.305 ppm
2023-05-16N2549490.875 ppm
2023-05-16N2549501.03 ppm
2023-05-16N2549510.266 ppm
2023-06-07N2557250.816 ppm
2023-06-07N255726ND
2023-06-07N2557270.925 ppm
2023-06-07N2557280.489 ppm
2023-06-07N2557290.654 ppm
2023-07-21IMDG0691020.663 ppm
2023-07-21IMDG0691030.833 ppm
2023-11-28PHDMDK0721030.779 ppm
2023-11-28PHDMDK0721020.505 ppm