Know Your Environment. Protect Your Health.

Nitrate

Burr Oak

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.

 

113

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND200ND
2020ND150ND
2021ND250ND
2022ND260ND
2023ND260ND

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
2018-09-10LLI04090ND
2019-07-12LLI49421ND
2019-07-25LLI52062ND
2019-07-25LLI52064ND
2019-07-25LLI52061ND
2019-08-12LLI55545ND
2019-08-23LLI58965ND
2019-09-03LLI61252ND
2019-09-19LLI65214ND
2019-09-30LLI68224ND
2019-09-30LLI68225ND
2019-10-18LLI71397ND
2019-10-30LLI73702ND
2019-11-15LLI77293ND
2019-11-25LLI79767ND
2019-12-04LLI81244ND
2019-12-30LLI86076ND
2019-12-30LLI86073ND
2019-12-30LLI86074ND
2019-12-31LLI86101ND
2019-12-31LLI86102ND
2020-06-09ND
2020-06-23ND
2020-07-08ND
2020-07-20ND
2020-07-27ND
2020-08-11ND
2020-09-01ND
2020-09-14ND
2020-09-22ND
2020-10-29ND
2020-11-04ND
2020-11-18ND
2020-12-01ND
2020-12-14ND
2020-12-28ND
2021-01-13ND
2021-01-27ND
2021-02-10ND
2021-02-23ND
2021-03-08ND
2021-03-23ND
2021-04-13ND
2021-04-27ND
2021-05-12ND
2021-05-24ND
2021-06-08ND
2021-06-24ND
2021-07-08ND
2021-07-21ND
2021-08-04ND
2021-08-19ND
2021-08-24ND
2021-09-13ND
2021-09-28ND
2021-10-13ND
2021-10-27ND
2021-11-03ND
2021-11-23ND
2021-12-01ND
2021-12-15ND
2022-01-04ND
2022-01-19ND
2022-02-03ND
2022-02-14ND
2022-03-01ND
2022-03-16ND
2022-03-29ND
2022-04-04ND
2022-04-27ND
2022-05-04ND
2022-05-23ND
2022-06-08ND
2022-06-22ND
2022-07-06ND
2022-07-21ND
2022-08-04ND
2022-08-18ND
2022-09-01ND
2022-09-13ND
2022-09-29ND
2022-10-13ND
2022-10-19ND
2022-11-09ND
2022-11-21ND
2022-11-29ND
2022-12-20ND
2023-01-05ND
2023-01-20ND
2023-02-01ND
2023-02-16ND
2023-03-02ND
2023-03-16ND
2023-03-20ND
2023-04-13ND
2023-04-27ND
2023-05-10ND
2023-05-23ND
2023-06-08ND
2023-06-20ND
2023-07-06ND
2023-07-20ND
2023-08-03ND
2023-08-17ND
2023-08-23ND
2023-09-14ND
2023-09-21ND
2023-10-12ND
2023-10-19ND
2023-11-08ND
2023-11-21ND
2023-12-05ND
2023-12-12ND