Know Your Environment. Protect Your Health.

Nitrate

Western Cass Water Supply Corporation

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0289 ppm54ND - 0.0588 ppm
20190.0490 ppm550.0295 ppm - 0.0785 ppm
20200.0379 ppm65ND - 0.0945 ppm
20210.0377 ppm65ND - 0.0618 ppm
20220.0333 ppm660.0233 ppm - 0.0480 ppm
20230.0350 ppm660.0200 ppm - 0.0600 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
2018-03-08Q1809687019ND
2018-03-08Q18096870200.0331 ppm
2018-03-08Q18096870210.0174 ppm
2018-03-08Q18096870220.0351 ppm
2018-03-08Q18096870180.0588 ppm
2019-05-02Q19182360210.0444 ppm
2019-05-02Q19182360200.0376 ppm
2019-05-02Q19182360190.0295 ppm
2019-05-02Q19182360180.0785 ppm
2019-05-02Q19182360170.0548 ppm
2020-03-19Q20119970100.0427 ppm
2020-03-19Q2011997017ND
2020-04-21Q20157670320.0945 ppm
2020-04-21Q20157670330.0391 ppm
2020-04-21Q20157670410.0276 ppm
2020-04-21Q20157670420.0236 ppm
2021-10-25Q21299110220.0407 ppm
2021-10-25Q2129911026ND
2021-10-25Q21299110250.0319 ppm
2021-10-25Q21299110240.0299 ppm
2021-10-25Q21299110230.0618 ppm
2021-10-25Q21299110210.0618 ppm
2022-04-14Q22115930130.0233 ppm
2022-04-14Q22115930140.0319 ppm
2022-04-14Q22115930150.0426 ppm
2022-04-14Q22115930160.0234 ppm
2022-04-14Q22115930190.0305 ppm
2022-11-16Q22345480050.0480 ppm
2023-08-01Q23311110120.0291 ppm
2023-08-01Q23311110190.0600 ppm
2023-10-02Q23421200290.0485 ppm
2023-10-02Q23421200300.0200 ppm
2023-10-02Q23421200310.0271 ppm
2023-10-02Q23421200320.0254 ppm