Know Your Environment. Protect Your Health.

Nitrate

Center Point Water Supply

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.487 ppm220.426 ppm - 0.548 ppm
20190.461 ppm330.339 ppm - 0.578 ppm
20200.620 ppm220.547 ppm - 0.693 ppm
20210.289 ppm220.151 ppm - 0.427 ppm
20220.708 ppm220.533 ppm - 0.883 ppm
2023ND20ND

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
2018-01-082A80105-030.426 ppm
2018-07-102G80275-030.548 ppm
2019-01-072A90087-030.578 ppm
2019-03-122C90178-010.339 ppm
2019-07-082G90144-030.466 ppm
2020-01-082A00197-030.693 ppm
2020-01-212A00485-010.547 ppm
2021-01-192EA0344-030.427 ppm
2021-01-192EA0344-040.151 ppm
2022-01-132FA0300-010.883 ppm
2022-01-132FA0300-020.533 ppm
2023-01-232GA0432-01ND
2023-01-232GA0432-02ND