Know Your Environment. Protect Your Health.

Nitrate

Dixie Isle Water System

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0274 ppm220.0234 ppm - 0.0314 ppm
20190.0380 ppm220.0328 ppm - 0.0431 ppm
20200.0498 ppm21ND - 0.0996 ppm
20210.0188 ppm21ND - 0.0376 ppm
20220.0330 ppm21ND - 0.0660 ppm
20230.0118 ppm21ND - 0.0235 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
2018-12-13Q18514390040.0234 ppm
2018-12-13Q18514390050.0314 ppm
2019-08-21Q19579630060.0328 ppm
2019-08-21Q19579630070.0431 ppm
2020-05-27Q2020826006ND
2020-05-27Q20208260070.0996 ppm
2021-06-30Q21171650100.0376 ppm
2021-06-30Q2117165011ND
2022-06-29Q22183550060.0660 ppm
2022-06-29Q2218355007ND
2023-03-01Q2308238002ND
2023-03-01Q23082380030.0235 ppm