Nitrate and nitrite
Cadiz Village 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.
45
Samples
0
Samples exceeding legal limit (MCL)
26
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.198 ppm | 12 | 8 | ND - 0.800 ppm |
| 2015 | 0.415 ppm | 12 | 11 | ND - 1.50 ppm |
| 2016 | 0.236 ppm | 12 | 10 | ND - 0.810 ppm |
| 2017 | 0.351 ppm | 9 | 9 | 0.1000 ppm - 0.940 ppm |
| 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 |
|---|---|---|
| 2014-01-08 | A140158424 | 0.800 ppm |
| 2014-02-05 | A140165298 | 0.460 ppm |
| 2014-03-12 | A140176795 | 0.420 ppm |
| 2014-04-09 | A140161264 | ND |
| 2014-05-07 | A140161285 | 0.170 ppm |
| 2014-06-04 | A140180500 | ND |
| 2014-07-09 | A140206898 | 0.110 ppm |
| 2014-08-06 | A140202429 | 0.180 ppm |
| 2014-09-03 | A140165189 | 0.110 ppm |
| 2014-10-22 | A140250747 | ND |
| 2014-11-05 | A140240489 | 0.130 ppm |
| 2014-12-03 | A140242063 | ND |
| 2015-01-14 | A150259147 | 0.760 ppm |
| 2015-02-04 | A150250751 | 0.510 ppm |
| 2015-03-04 | A150179662 | 0.540 ppm |
| 2015-04-01 | A150270216 | 0.680 ppm |
| 2015-05-06 | A150250756 | 1.50 ppm |
| 2015-06-03 | A150288711 | ND |
| 2015-07-08 | A150288713 | 0.170 ppm |
| 2015-08-05 | A150270200 | 0.130 ppm |
| 2015-09-02 | A150294283 | 0.1000 ppm |
| 2015-10-14 | A150313762 | 0.200 ppm |
| 2015-11-04 | A150300242 | 0.270 ppm |
| 2015-12-02 | A150179663 | 0.120 ppm |
| 2016-01-06 | A160345342 | 0.420 ppm |
| 2016-02-03 | A160328191 | 0.120 ppm |
| 2016-03-02 | A160348775 | 0.810 ppm |
| 2016-04-06 | A160328192 | 0.120 ppm |
| 2016-05-11 | A160383248 | ND |
| 2016-06-01 | A160380925 | ND |
| 2016-07-06 | A160368465 | 0.150 ppm |
| 2016-08-03 | A160424784 | 0.1000 ppm |
| 2016-09-07 | A160407498 | 0.140 ppm |
| 2016-10-04 | A160438785 | 0.290 ppm |
| 2016-11-02 | A160435176 | 0.240 ppm |
| 2016-12-06 | A160452804 | 0.440 ppm |
| 2017-01-03 | A170460602 | 0.940 ppm |
| 2017-02-07 | A170430629 | 0.680 ppm |
| 2017-03-07 | A170460580 | 0.420 ppm |
| 2017-04-11 | A170490771 | 0.220 ppm |
| 2017-05-02 | A170462818 | 0.140 ppm |
| 2017-06-06 | A170476381 | 0.200 ppm |
| 2017-07-05 | A170476391 | 0.230 ppm |
| 2017-08-01 | A170521314 | 0.1000 ppm |
| 2017-09-12 | A170497961 | 0.230 ppm |