Nitrate and nitrite
City of Lorain
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.
69
Samples
0
Samples exceeding legal limit (MCL)
55
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.358 ppm | 12 | 10 | ND - 0.780 ppm |
| 2015 | 0.426 ppm | 12 | 11 | ND - 0.940 ppm |
| 2016 | 0.444 ppm | 12 | 9 | ND - 1.36 ppm |
| 2017 | 0.484 ppm | 12 | 10 | ND - 1.50 ppm |
| 2018 | 0.511 ppm | 12 | 11 | ND - 1.14 ppm |
| 2019 | 0.678 ppm | 9 | 8 | ND - 1.08 ppm |
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 |
|---|---|---|
| 2014-01-07 | 14-10167-08 | 0.490 ppm |
| 2014-02-04 | 14-11281-01 | 0.230 ppm |
| 2014-03-04 | 14-12481-04 | 0.440 ppm |
| 2014-04-02 | 14-13975-04 | 0.770 ppm |
| 2014-05-06 | 14-15356-04A | 0.780 ppm |
| 2014-06-03 | 14-16794-01 | 0.280 ppm |
| 2014-07-03 | 14-18658-06 | 0.660 ppm |
| 2014-08-05 | 14-20129-04 | 0.260 ppm |
| 2014-09-04 | 14-22144-01 | 0.160 ppm |
| 2014-10-07 | 14-23785-04 | ND |
| 2014-11-04 | 14-25062-01 | 0.220 ppm |
| 2014-12-02 | 14-26292-04 | ND |
| 2015-01-05 | 15-10098-04 | 0.400 ppm |
| 2015-02-03 | 15-11265-01 | 0.360 ppm |
| 2015-03-03 | 15-12432-01 | 0.400 ppm |
| 2015-04-02 | 15-14002-03 | 0.570 ppm |
| 2015-05-05 | 15-15594-03 | 0.780 ppm |
| 2015-06-02 | 15-17150-03 | 0.940 ppm |
| 2015-07-02 | 15-18999-03 | 0.840 ppm |
| 2015-08-04 | 15-20780-03 | 0.310 ppm |
| 2015-09-03 | 15-22854-03 | ND |
| 2015-10-06 | 15-24506-03 | 0.130 ppm |
| 2015-11-03 | 15-26139-03 | 0.200 ppm |
| 2015-12-03 | 15-27638-03 | 0.180 ppm |
| 2016-01-05 | 16-10154-03 | 0.450 ppm |
| 2016-02-02 | 16-11439-03 | 0.380 ppm |
| 2016-03-03 | 16-13072-03 | 0.890 ppm |
| 2016-04-05 | 16-14717-03 | 0.560 ppm |
| 2016-05-03 | 16-16262-03A | 1.36 ppm |
| 2016-06-02 | 16-17910-03 | 0.730 ppm |
| 2016-07-07 | 16-20319-03 | 0.550 ppm |
| 2016-08-02 | 16-21938-03 | 0.300 ppm |
| 2016-09-01 | 16-24352-01 | 0.110 ppm |
| 2016-10-04 | 16-26590-03 | ND |
| 2016-11-03 | 16-28656-03 | ND |
| 2016-12-01 | 16-30066-03 | ND |
| 2017-01-05 | 17-10287-03 | 0.270 ppm |
| 2017-02-02 | 17-11829-03 | 0.830 ppm |
| 2017-03-02 | 17-13627-03 | 1.50 ppm |
| 2017-04-04 | 17-15571-03 | 0.880 ppm |
| 2017-05-04 | 17-17747-03A | 0.860 ppm |
| 2017-06-01 | 17-19439-03 | 0.780 ppm |
| 2017-07-06 | 17-22102-04 | 0.210 ppm |
| 2017-08-03 | 17-24472-03 | 0.110 ppm |
| 2017-09-07 | 17-27125-03 | ND |
| 2017-10-05 | 17-29293-03 | ND |
| 2017-11-02 | 17-31229-03 | 0.150 ppm |
| 2017-12-07 | 17-33444-03 | 0.220 ppm |
| 2018-01-04 | 18-10317-03 | 0.330 ppm |
| 2018-02-01 | 18-11871-01 | 0.570 ppm |
| 2018-03-01 | M18-13603-01 | 0.960 ppm |
| 2018-04-04 | 18-16202-03 | 0.960 ppm |
| 2018-05-03 | 18-18242-03A | 1.14 ppm |
| 2018-06-07 | 18-21117-02 | 0.590 ppm |
| 2018-07-05 | 18-23519-01 | 0.580 ppm |
| 2018-08-02 | 18-26102-01 | 0.290 ppm |
| 2018-09-06 | 18-29136-01 | ND |
| 2018-10-04 | 18-31819-01 | 0.130 ppm |
| 2018-11-01 | 18-33917-01 | 0.160 ppm |
| 2018-12-06 | 18-36434-01 | 0.420 ppm |
| 2019-01-03 | 19-10208-01 | 0.640 ppm |
| 2019-02-07 | 19-12602-03 | 0.660 ppm |
| 2019-03-07 | 19-14567-01 | 0.990 ppm |
| 2019-04-04 | 19-16701-01 | 1.08 ppm |
| 2019-05-02 | 19-18666-03A | 0.930 ppm |
| 2019-06-06 | 19-21504-01 | 0.600 ppm |
| 2019-07-02 | 19-23824-01 | 0.850 ppm |
| 2019-08-01 | M19-26405-01 | 0.350 ppm |
| 2019-09-05 | 19-29716-01 | ND |