Know Your Environment. Protect Your Health.

Nitrate and nitrite

Lockesburg Waterworks

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

13

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.02 ppm330.960 ppm - 1.06 ppm
20190.640 ppm220.470 ppm - 0.810 ppm
20201.02 ppm221.000 ppm - 1.03 ppm
20210.835 ppm220.670 ppm - 1.000 ppm
20221.09 ppm220.970 ppm - 1.20 ppm
20230.675 ppm220.670 ppm - 0.680 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

ppm = parts per million

All test results

Date Lab ID Result
2018-05-21Y1814400371.06 ppm
2018-09-11Y1825600060.960 ppm
2018-10-22Y1829800211.04 ppm
2019-05-28Y1915000020.810 ppm
2019-05-28Y1915000010.470 ppm
2020-05-20Y2014200401.03 ppm
2020-05-20Y2014200371.000 ppm
2021-07-20Y2120300190.670 ppm
2021-07-20Y2120300131.000 ppm
2022-04-06Y2209700041.20 ppm
2022-04-06Y2209700030.970 ppm
2023-05-03Y2312400540.680 ppm
2023-05-03Y2312400660.670 ppm