Know Your Environment. Protect Your Health.

Nitrate

Marysville Utilities

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.726 ppm75ND - 2.93 ppm
20190.934 ppm75ND - 1.59 ppm
2020N/A00N/A
20210.473 ppm85ND - 3.21 ppm
20220.860 ppm73ND - 3.19 ppm
20230.526 ppm74ND - 3.11 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
2018-07-24ND
2018-07-301.49 ppm
2018-07-302.93 ppm
2018-07-300.180 ppm
2018-07-300.130 ppm
2018-09-11ND
2018-11-300.350 ppm
2019-08-280.180 ppm
2019-08-28ND
2019-09-041.59 ppm
2019-09-041.59 ppm
2019-09-04ND
2019-09-041.59 ppm
2019-09-041.59 ppm
2021-08-2441572163.21 ppm
2021-08-2441572180.130 ppm
2021-08-244157219ND
2021-08-2441572150.170 ppm
2021-08-2541572140.130 ppm
2021-08-254157212ND
2021-08-2541572110.140 ppm
2021-08-254157213ND
2022-08-0943207463.19 ppm
2022-08-0943207472.54 ppm
2022-08-094320748ND
2022-08-094328516ND
2022-08-0943313320.290 ppm
2022-08-094320745ND
2022-08-094323103ND
2023-08-154491294ND
2023-08-1544912960.160 ppm
2023-08-1544912950.150 ppm
2023-08-1544912973.11 ppm
2023-08-1544913010.260 ppm
2023-08-154491300ND
2023-12-214558163ND