Know Your Environment. Protect Your Health.

Nitrate

Ocean Lakes Ltd

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.270 ppm32ND - 0.520 ppm
20190.197 ppm32ND - 0.370 ppm
20200.113 ppm32ND - 0.240 ppm
20210.0700 ppm31ND - 0.210 ppm
20220.0413 ppm330.0280 ppm - 0.0580 ppm
20230.0693 ppm32ND - 0.170 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
2018-09-18AE180100.520 ppm
2018-09-18AE18011ND
2018-09-18AE180090.290 ppm
2019-08-19AE35559ND
2019-08-19AE355600.370 ppm
2019-08-19AE355560.220 ppm
2020-07-16AE51509ND
2020-07-16AE515120.240 ppm
2020-07-16AE515000.1000 ppm
2021-08-04AE69893ND
2021-08-04AE69895ND
2021-08-04AE698940.210 ppm
2022-07-13AE864910.0280 ppm
2022-07-13AE864930.0380 ppm
2022-07-13AE864920.0580 ppm
2023-02-23AE976050.0380 ppm
2023-02-23AE976080.170 ppm
2023-02-23AE97611ND