Know Your Environment. Protect Your Health.

Nitrate and nitrite

Cheniere Drew North Water System

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.0192 ppm102ND - 0.0960 ppm
20200.120 ppm53ND - 0.200 ppm
20210.200 ppm550.200 ppm
20220.0200 ppm51ND - 0.1000 ppm
2023ND50ND

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
2019-11-2035515041002ND
2019-11-2035515041001ND
2019-11-20355150410050.0960 ppm
2019-11-2035515041004ND
2019-11-2035515041003ND
2019-11-2035515041002ND
2019-11-2035515041001ND
2019-11-20355150410050.0960 ppm
2019-11-2035515041004ND
2019-11-2035515041003ND
2020-07-30B2003906-0010.200 ppm
2020-07-30B2003906-0020.200 ppm
2020-07-30B2003906-0030.200 ppm
2020-09-22B2004890-003ND
2020-09-22B2004890-004ND
2021-05-06B2102241-0010.200 ppm
2021-05-06B2102241-0050.200 ppm
2021-05-06B2102241-0040.200 ppm
2021-05-06B2102241-0030.200 ppm
2021-05-06B2102241-0020.200 ppm
2022-02-18B2200711-001ND
2022-02-18B2200711-002ND
2022-02-18B2200711-0030.1000 ppm
2022-02-18B2200711-004ND
2022-05-11B2202288-001ND
2023-10-09B2304361-006ND
2023-10-09B2304361-007ND
2023-10-09B2304361-008ND
2023-10-09B2304361-009ND
2023-10-09B2304361-010ND