Know Your Environment. Protect Your Health.

Nitrate

Spring Green Estates

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.73 ppm42ND - 7.48 ppm
20193.83 ppm660.0690 ppm - 7.67 ppm
20203.76 ppm84ND - 7.75 ppm
20214.30 ppm84ND - 8.94 ppm
20224.27 ppm84ND - 8.68 ppm
20235.01 ppm96ND - 9.05 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
2018-03-12371114001ND
2018-03-12371113001ND
2018-03-203721340017.48 ppm
2018-03-203721360017.45 ppm
2019-04-25SG04261917.67 ppm
2019-04-25SG04261920.342 ppm
2019-08-28SG08291920.172 ppm
2019-08-28SG08291917.56 ppm
2019-12-03SG12041910.0690 ppm
2019-12-03SG12041927.18 ppm
2020-01-09SG0110201ND
2020-01-09SG01102027.15 ppm
2020-04-06SG0407202ND
2020-04-06SG04072017.75 ppm
2020-08-13SG0814201ND
2020-08-13SG08142027.57 ppm
2020-10-29SG1030201ND
2020-10-29SG10302027.62 ppm
2021-01-13SG0114211ND
2021-01-13SG01142128.17 ppm
2021-04-09SG04092118.54 ppm
2021-04-09SG0409212ND
2021-07-21SG0722211ND
2021-07-21SG07222128.94 ppm
2021-10-07SG1008212ND
2021-10-07SG10082118.72 ppm
2022-03-10SG0311222ND
2022-03-10SG03112218.67 ppm
2022-04-07SG0407223ND
2022-04-07SG04072228.46 ppm
2022-09-07SG0908222ND
2022-09-07SG09082238.68 ppm
2022-10-17SG1018221ND
2022-10-17SG10182228.32 ppm
2023-02-07SG0208231ND
2023-02-07SG02082329.05 ppm
2023-04-14SG04142310.990 ppm
2023-05-18SG05182318.79 ppm
2023-06-12SG06132318.67 ppm
2023-09-18SG0919231ND
2023-09-19SG09192328.84 ppm
2023-10-16SG1016232ND
2023-10-16SG10162318.75 ppm