Nitrate and nitrite
New Britain Water Department
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.
29
Samples
0
Samples exceeding legal limit (MCL)
13
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.143 ppm | 5 | 3 | ND - 0.550 ppm |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | 0.282 ppm | 5 | 4 | ND - 1.000 ppm |
| 2017 | 0.260 ppm | 5 | 4 | ND - 0.600 ppm |
| 2018 | 0.362 ppm | 5 | 5 | 0.0880 ppm - 0.713 ppm |
| 2019 | 0.102 ppm | 9 | 9 | 0.0380 ppm - 0.222 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 |
|---|---|---|
| 2014-05-23 | E405L07-2IOC1 | 0.0530 ppm |
| 2014-05-23 | E405L07-3IOC1 | 0.110 ppm |
| 2014-05-23 | E405L07-4IOC1 | 0.550 ppm |
| 2014-05-23 | E405L07-1IOC1 | ND |
| 2014-07-10 | 10079-02941NOX | ND |
| 2016-05-19 | 7544-03714NOX | 0.200 ppm |
| 2016-05-19 | 7546-03716NOX | ND |
| 2016-05-19 | 7545-03715NOX | 0.01000 ppm |
| 2016-05-19 | 7547-03717NOX | 1.000 ppm |
| 2016-07-13 | 10611-03602NOX | 0.200 ppm |
| 2017-05-16 | 5851-03846NOX | 0.400 ppm |
| 2017-05-16 | 5853-03848NOX | ND |
| 2017-05-16 | 5852-03847NOX | 0.200 ppm |
| 2017-05-16 | 5854-03849NOX | 0.600 ppm |
| 2017-07-11 | 8044-03895NOX | 0.1000 ppm |
| 2018-04-16 | IOCR 200492147 | 0.206 ppm |
| 2018-04-16 | IOCR 200492150 | 0.161 ppm |
| 2018-04-16 | IOCR 200492148 | 0.640 ppm |
| 2018-04-16 | IOCR 200492149 | 0.713 ppm |
| 2018-06-20 | NOX 200497534 | 0.0880 ppm |
| 2019-04-25 | NOX 200529606 | 0.0460 ppm |
| 2019-04-25 | IOCR 200529606B | 0.0460 ppm |
| 2019-04-25 | IOCR 200529609E | 0.119 ppm |
| 2019-04-25 | NOX 200529609 | 0.119 ppm |
| 2019-04-25 | NOX 200529607 | 0.0530 ppm |
| 2019-04-25 | IOCR 200529607C | 0.0530 ppm |
| 2019-04-25 | IOCR 200529608D | 0.222 ppm |
| 2019-04-25 | NOX 200529608 | 0.222 ppm |
| 2019-06-12 | NOX 200535995 | 0.0380 ppm |