Nitrate
Avon Lake City PWS
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.
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 | 0.324 ppm | 12 | 11 | ND - 0.980 ppm |
| 2015 | 0.405 ppm | 12 | 12 | 0.111 ppm - 0.998 ppm |
| 2016 | 0.401 ppm | 12 | 11 | ND - 0.986 ppm |
| 2017 | 0.396 ppm | 12 | 11 | ND - 1.02 ppm |
| 2018 | 0.549 ppm | 12 | 12 | 0.141 ppm - 1.41 ppm |
| 2019 | 0.649 ppm | 9 | 8 | ND - 1.06 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.
EPA Maximum Contaminant
Level (MCL) 10 ppm
The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-28 | 201402802 | 0.259 ppm |
| 2014-02-21 | 201405202 | 0.230 ppm |
| 2014-03-19 | 201407802 | 0.470 ppm |
| 2014-04-29 | 201411902 | 0.980 ppm |
| 2014-05-23 | 201414302 | 0.364 ppm |
| 2014-06-18 | 201416902 | 0.462 ppm |
| 2014-07-24 | 201420502 | 0.301 ppm |
| 2014-08-19 | 201423102 | 0.203 ppm |
| 2014-09-18 | 201426102 | 0.145 ppm |
| 2014-10-17 | 201429002 | ND |
| 2014-11-25 | 201432902 | 0.139 ppm |
| 2014-12-19 | 201435302 | 0.334 ppm |
| 2015-01-22 | 201502202 | 0.385 ppm |
| 2015-02-17 | 201504802 | 0.320 ppm |
| 2015-03-20 | 201507902 | 0.577 ppm |
| 2015-04-27 | 201511702 | 0.998 ppm |
| 2015-05-20 | 201514002 | 0.626 ppm |
| 2015-06-19 | 201517002 | 0.667 ppm |
| 2015-07-24 | 201520502 | 0.324 ppm |
| 2015-08-14 | 201522602 | 0.203 ppm |
| 2015-09-22 | 201526502 | 0.111 ppm |
| 2015-10-20 | 201529302 | 0.251 ppm |
| 2015-11-12 | 201531602 | 0.217 ppm |
| 2015-12-17 | 201535102 | 0.177 ppm |
| 2016-01-15 | 201601502 | 0.462 ppm |
| 2016-02-17 | 201604802 | 0.417 ppm |
| 2016-03-16 | 201607602 | 0.553 ppm |
| 2016-04-20 | 201611102 | 0.588 ppm |
| 2016-05-27 | 201614802 | 0.986 ppm |
| 2016-06-22 | 201617402 | 0.627 ppm |
| 2016-07-15 | 201619702 | 0.514 ppm |
| 2016-08-19 | 201623202 | 0.160 ppm |
| 2016-09-16 | 201626002 | 0.108 ppm |
| 2016-10-20 | 201629402 | ND |
| 2016-11-18 | 201632302 | 0.177 ppm |
| 2016-12-15 | 201635002 | 0.219 ppm |
| 2017-01-27 | 201702702 | 0.653 ppm |
| 2017-02-16 | 201704702 | 0.150 ppm |
| 2017-03-24 | 201708302 | 1.02 ppm |
| 2017-04-26 | 201711602 | 0.694 ppm |
| 2017-05-19 | 201713902 | 0.740 ppm |
| 2017-06-22 | 201717302 | 0.573 ppm |
| 2017-07-26 | 201720702 | 0.246 ppm |
| 2017-08-18 | 201723002 | 0.110 ppm |
| 2017-09-28 | 201727102 | ND |
| 2017-10-18 | 201729102 | 0.113 ppm |
| 2017-11-29 | 201733302 | 0.209 ppm |
| 2017-12-15 | 201734902 | 0.238 ppm |
| 2018-01-26 | 201802602 | 0.459 ppm |
| 2018-02-13 | 201804402 | 0.384 ppm |
| 2018-03-21 | 201808002 | 0.788 ppm |
| 2018-04-20 | 201811002 | 1.04 ppm |
| 2018-05-08 | 201812802 | 1.41 ppm |
| 2018-06-15 | 201816602 | 0.595 ppm |
| 2018-07-27 | 201820802 | 0.364 ppm |
| 2018-08-14 | 201822602 | 0.341 ppm |
| 2018-09-25 | 201826802 | 0.205 ppm |
| 2018-10-24 | 201829702 | 0.141 ppm |
| 2018-11-29 | 201833302 | 0.422 ppm |
| 2018-12-20 | 201835402 | 0.437 ppm |
| 2019-01-29 | 201902902 | 0.974 ppm |
| 2019-02-26 | 201905702 | 1.000 ppm |
| 2019-03-15 | 201907402 | 0.716 ppm |
| 2019-04-12 | 201910202 | 1.06 ppm |
| 2019-05-23 | 201914302 | 0.816 ppm |
| 2019-06-14 | 201916502 | 0.562 ppm |
| 2019-07-16 | 201919702 | 0.537 ppm |
| 2019-08-16 | 201922802 | 0.177 ppm |
| 2019-09-20 | 201926302 | ND |