Know Your Environment. Protect Your Health.

Nitrate

Brandon-irene 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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.494 ppm440.0478 ppm - 1.79 ppm
20190.393 ppm440.0445 ppm - 1.38 ppm
20200.0885 ppm330.0521 ppm - 0.154 ppm
20210.0839 ppm440.0367 ppm - 0.142 ppm
20220.0813 ppm440.0511 ppm - 0.121 ppm
20230.0836 ppm440.0517 ppm - 0.117 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
2018-06-12Q18232320061.79 ppm
2018-06-12Q18232320110.0478 ppm
2018-06-12Q18232320210.0535 ppm
2018-06-12Q18232320050.0860 ppm
2019-01-14Q19017310030.0445 ppm
2019-01-14Q19017310150.0533 ppm
2019-04-04Q19137660041.38 ppm
2019-04-04Q19137660070.0934 ppm
2020-01-14Q20012920160.0521 ppm
2020-01-14Q20012920170.0594 ppm
2020-12-10Q20492630010.154 ppm
2021-10-11Q21280670090.0776 ppm
2021-10-11Q21280670130.142 ppm
2021-10-11Q21280670110.0367 ppm
2021-10-11Q21280670100.0792 ppm
2022-10-18Q22315500110.0718 ppm
2022-10-18Q22315500120.0813 ppm
2022-10-18Q22315500130.121 ppm
2022-10-18Q22315500170.0511 ppm
2023-07-05Q23260660010.117 ppm
2023-07-05Q23260660020.0517 ppm
2023-10-04Q23427060030.0637 ppm
2023-10-04Q23427060170.102 ppm