Nitrate and nitrite
Cleveland Public 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.
52
Samples
0
Samples exceeding legal limit (MCL)
35
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.310 ppm | 48 | 39 | ND - 1.03 ppm |
| 2015 | 1.02 ppm | 4 | 4 | 0.990 ppm - 1.07 ppm |
| 2016 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-01-06 | 3114010601 | 0.250 ppm |
| 2014-01-06 | 2114010605 | 0.230 ppm |
| 2014-01-06 | 5114010607 | 0.240 ppm |
| 2014-01-06 | 4114010613 | 0.280 ppm |
| 2014-02-28 | 2114022805 | 0.480 ppm |
| 2014-02-28 | 3114022801 | 0.330 ppm |
| 2014-02-28 | 4114022813 | 0.210 ppm |
| 2014-02-28 | 5114022807 | 0.460 ppm |
| 2014-03-21 | 2114032105 | 0.150 ppm |
| 2014-03-21 | 3114032101 | 0.170 ppm |
| 2014-03-21 | 4114032113 | 0.200 ppm |
| 2014-03-21 | 5114032107 | 0.130 ppm |
| 2014-04-02 | 4114040213 | 0.560 ppm |
| 2014-04-02 | 5114040207 | 0.320 ppm |
| 2014-04-02 | 3114040201 | 0.580 ppm |
| 2014-04-02 | 2114040205 | 0.570 ppm |
| 2014-05-12 | 2114051205 | 1.03 ppm |
| 2014-05-12 | 3114051201 | 0.400 ppm |
| 2014-05-12 | 4114051213 | 0.250 ppm |
| 2014-05-12 | 5114051207 | 0.720 ppm |
| 2014-06-13 | 2114061305 | 0.280 ppm |
| 2014-06-13 | 3114061301 | 0.250 ppm |
| 2014-06-13 | 4114061313 | 0.290 ppm |
| 2014-06-13 | 5114061307 | 0.720 ppm |
| 2014-07-11 | 5114071107 | 0.310 ppm |
| 2014-07-11 | 4114071113 | 0.260 ppm |
| 2014-07-11 | 2114071105 | 0.290 ppm |
| 2014-07-11 | 3114071101 | 0.300 ppm |
| 2014-08-29 | 2114082905 | ND |
| 2014-08-29 | 3114082901 | 0.110 ppm |
| 2014-08-29 | 4114082913 | 0.110 ppm |
| 2014-08-29 | 5114082907 | 0.140 ppm |
| 2014-09-03 | 2114090305 | 0.1000 ppm |
| 2014-09-03 | 3114090301 | 0.1000 ppm |
| 2014-09-03 | 4114090313 | 0.1000 ppm |
| 2014-09-03 | 5114090307 | 0.140 ppm |
| 2014-10-17 | 5114101707 | ND |
| 2014-10-17 | 4114101713 | ND |
| 2014-10-17 | 3114101701 | ND |
| 2014-10-17 | 2114101705 | ND |
| 2014-11-07 | 2114110705 | ND |
| 2014-11-07 | 3114110701 | ND |
| 2014-11-07 | 4114110713 | ND |
| 2014-11-07 | 5114110707 | ND |
| 2014-12-05 | 2114120505 | 0.960 ppm |
| 2014-12-05 | 3114120501 | 0.990 ppm |
| 2014-12-05 | 4114120513 | 0.910 ppm |
| 2014-12-05 | 5114120507 | 0.970 ppm |
| 2015-01-21 | 2115012105 | 1.000 ppm |
| 2015-01-21 | 3115012101 | 1.07 ppm |
| 2015-01-21 | 4115012113 | 0.990 ppm |
| 2015-01-21 | 5115012107 | 1.03 ppm |