Nitrate and nitrite

Ravenna City PWS

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	0.301 ppm	12	10	ND - 0.560 ppm
2015	0.137 ppm	12	7	ND - 0.380 ppm
2016	ND	1	0	ND
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

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
2014-01-15	14-10677-06	0.140 ppm
2014-02-12	14-11807-06	0.330 ppm
2014-03-12	14-13064-04	0.560 ppm
2014-04-09	14-14378-06	0.360 ppm
2014-05-07	14-15557-06	0.370 ppm
2014-06-11	14-17539-06	0.320 ppm
2014-07-09	14-19031-06	0.530 ppm
2014-08-14	14-20988-04A	0.520 ppm
2014-09-11	14-22468-06	0.370 ppm
2014-10-09	14-23958-06	ND
2014-11-12	14-25609-06	0.110 ppm
2014-12-10	14-26918-06	ND
2015-01-14	15-10590-06	ND
2015-02-11	15-11778-06	0.140 ppm
2015-03-19	15-13426-06	0.210 ppm
2015-04-15	15-14829-06	0.150 ppm
2015-05-14	15-16231-06	0.130 ppm
2015-06-10	15-17936-06	0.300 ppm
2015-07-15	15-19910-06	0.380 ppm
2015-08-13	15-21597-06	0.330 ppm
2015-09-17	15-23656-06	ND
2015-10-14	15-25222-06	ND
2015-11-10	15-26700-06	ND
2015-12-10	15-28097-06	ND
2016-01-13	16-10686-06	ND