Nitrate
Caldwell Village Public Water System
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 | 0.126 ppm | 12 | 8 | ND - 0.278 ppm |
| 2015 | 0.268 ppm | 13 | 8 | ND - 1.99 ppm |
| 2016 | 0.0608 ppm | 12 | 5 | ND - 0.170 ppm |
| 2017 | 0.123 ppm | 12 | 6 | ND - 0.300 ppm |
| 2018 | 0.198 ppm | 12 | 6 | ND - 0.925 ppm |
| 2019 | 0.294 ppm | 10 | 4 | ND - 0.875 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 |
|---|---|---|
| 2014-01-02 | 1400024 | 0.230 ppm |
| 2014-02-03 | 1400580 | 0.238 ppm |
| 2014-03-05 | 1401190 | ND |
| 2014-04-03 | 1401820 | 0.278 ppm |
| 2014-05-07 | 1402470 | 0.217 ppm |
| 2014-06-04 | 1403134 | 0.145 ppm |
| 2014-07-02 | 1403919 | 0.143 ppm |
| 2014-08-06 | 1404853 | 0.117 ppm |
| 2014-09-03 | 1405575 | ND |
| 2014-10-01 | 1406292 | ND |
| 2014-11-05 | 1407060 | ND |
| 2014-12-03 | 1407570 | 0.142 ppm |
| 2015-01-07 | 1500124 | 0.324 ppm |
| 2015-02-04 | 1500641 | 0.190 ppm |
| 2015-03-04 | 1501230 | 1.99 ppm |
| 2015-03-18 | 1501600 | 0.200 ppm |
| 2015-04-01 | 1501870 | 0.200 ppm |
| 2015-05-06 | 1502623 | 0.187 ppm |
| 2015-06-03 | 1503318 | 0.157 ppm |
| 2015-07-01 | 1504114 | 0.230 ppm |
| 2015-08-05 | 1505031 | ND |
| 2015-09-02 | 1505914 | ND |
| 2015-10-07 | 1506860 | ND |
| 2015-11-04 | 1507517 | ND |
| 2015-12-02 | 1508006 | ND |
| 2016-01-05 | 1600041 | 0.130 ppm |
| 2016-02-03 | 1600636 | ND |
| 2016-03-02 | 1601135 | 0.170 ppm |
| 2016-04-06 | 1601858 | 0.150 ppm |
| 2016-05-04 | 1602478 | 0.170 ppm |
| 2016-06-01 | 1603223 | ND |
| 2016-07-06 | 1604077 | ND |
| 2016-08-03 | 1604797 | ND |
| 2016-09-06 | 1605764 | ND |
| 2016-10-06 | 1606455 | ND |
| 2016-11-02 | 1606964 | ND |
| 2016-12-07 | 1607653 | 0.110 ppm |
| 2017-01-04 | 1700081 | 0.300 ppm |
| 2017-02-01 | 1700528 | 0.300 ppm |
| 2017-03-01 | 1703018-01 | 0.260 ppm |
| 2017-04-05 | 1704099-01 | 0.220 ppm |
| 2017-05-03 | 1705062-05 | 0.150 ppm |
| 2017-06-07 | 1706126-04 | ND |
| 2017-07-18 | 1707288-01 | ND |
| 2017-08-02 | 1708053-06 | ND |
| 2017-09-06 | 1709056-08 | ND |
| 2017-10-03 | 1710049-08 | ND |
| 2017-11-01 | 1711021-07 | ND |
| 2017-12-06 | 1712070-01 | 0.251 ppm |
| 2018-01-03 | 1801039-01 | 0.210 ppm |
| 2018-02-07 | 1802132-07 | 0.261 ppm |
| 2018-03-07 | 1803122-07 | 0.299 ppm |
| 2018-04-16 | 1804280-02 | 0.240 ppm |
| 2018-05-02 | 1805075-04 | ND |
| 2018-06-11 | 1806165-01 | ND |
| 2018-07-02 | 1807023-07 | ND |
| 2018-08-01 | 1808021-02 | ND |
| 2018-09-05 | M18-29054-02 | ND |
| 2018-10-02 | 410089 | 0.925 ppm |
| 2018-11-07 | 411155 | 0.440 ppm |
| 2018-12-05 | 412116 | ND |
| 2019-01-02 | 501011 | 0.725 ppm |
| 2019-02-05 | 502066 | 0.640 ppm |
| 2019-03-06 | 503120 | 0.875 ppm |
| 2019-04-03 | 504106 | 0.700 ppm |
| 2019-05-01 | 505032 | ND |
| 2019-06-05 | 506135 | ND |
| 2019-07-03 | 507174 | ND |
| 2019-08-07 | 508138 | ND |
| 2019-09-04 | 509108 | ND |
| 2019-10-02 | 510055 | ND |