Nitrate and nitrite

Great Waters At Reynolds Plantation

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.164 ppm	7	5	ND - 0.310 ppm
2015	ND	6	0	ND
2016	ND	5	0	ND
2017	0.1000 ppm	5	2	ND - 0.250 ppm
2018	0.0550 ppm	4	1	ND - 0.220 ppm
2019	ND	4	0	ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The 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
2014-10-30	AI58715	0.210 ppm
2014-10-30	AI58714	0.210 ppm
2014-10-30	AI58711	0.210 ppm
2014-10-30	AI58709	ND
2014-10-30	AI58708	0.210 ppm
2014-10-30	AI58705	ND
2014-10-30	AI58702	0.310 ppm
2015-10-08	AI92632	ND
2015-10-08	AI92630	ND
2015-10-08	AI92622	ND
2015-10-08	AI92621	ND
2015-10-08	AI92616	ND
2015-11-19	AJ01397	ND
2016-12-12	AJ36656	ND
2016-12-12	AJ36660	ND
2016-12-12	AJ36659	ND
2016-12-12	AJ36653	ND
2016-12-12	AJ36651	ND
2017-12-07	AJ75154	0.250 ppm
2017-12-07	AJ75147	0.250 ppm
2017-12-07	AJ75143	ND
2017-12-07	AJ75141	ND
2017-12-26	AJ75944	ND
2018-12-04	AK07319	ND
2018-12-04	AK07309	ND
2018-12-04	AK07308	0.220 ppm
2018-12-05	AK07453	ND
2019-12-03	AK37517	ND
2019-12-03	AK37525	ND
2019-12-03	AK37524	ND
2019-12-03	AK37521	ND