Chromium (total)
Parsippany-Troy Hills Water Department
Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.
55
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.94 ppb | 28 | 28 | 0.200 ppb - 5.70 ppb |
| 2015 | 0.747 ppb | 16 | 16 | 0.250 ppb - 1.20 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 1.09 ppb | 11 | 11 | 1.000 ppb - 2.00 ppb |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-18 | 201408200343AM | 1.20 ppb |
| 2014-08-18 | 201408200322AM | 0.570 ppb |
| 2014-08-18 | 201408210510AM | 0.870 ppb |
| 2014-08-18 | 201408200303AM | 0.720 ppb |
| 2014-08-18 | 201408210301AM | 0.980 ppb |
| 2014-08-18 | 201408200330AM | 0.670 ppb |
| 2014-08-18 | 201408210478AM | 0.600 ppb |
| 2014-08-18 | 201408210412AM | 0.630 ppb |
| 2014-08-18 | 201408200284AM | 0.700 ppb |
| 2014-08-19 | 201408210474AM | 0.950 ppb |
| 2014-08-19 | 201408210498AM | 0.200 ppb |
| 2014-08-19 | 201408210225AM | 1.40 ppb |
| 2014-08-19 | 201408210311AM | 0.590 ppb |
| 2014-08-28 | 201409030578AM | 1.10 ppb |
| 2014-09-17 | 4090565-01 | 3.81 ppb |
| 2014-09-17 | 4090565-11 | 1.63 ppb |
| 2014-09-17 | 4090565-12 | 3.89 ppb |
| 2014-09-17 | 4090565-10 | 2.79 ppb |
| 2014-09-17 | 4090565-09 | 2.01 ppb |
| 2014-09-17 | 4090565-02 | 4.19 ppb |
| 2014-09-17 | 4090565-03 | 3.78 ppb |
| 2014-09-17 | 4090565-08 | 4.04 ppb |
| 2014-09-17 | 4090565-04 | 3.28 ppb |
| 2014-09-17 | 4090565-07 | 5.20 ppb |
| 2014-09-17 | 4090565-05 | 5.70 ppb |
| 2014-09-17 | 4090565-06 | 1.67 ppb |
| 2014-11-12 | 201411150173AM | 0.920 ppb |
| 2014-11-12 | 201411150203AM | 0.300 ppb |
| 2015-02-18 | 201502200373AM | 0.670 ppb |
| 2015-02-18 | 201502200229AM | 1.000 ppb |
| 2015-02-18 | 201502200289AM | 0.820 ppb |
| 2015-02-23 | 201502270159AM | 0.570 ppb |
| 2015-02-23 | 201502270146AM | 1.10 ppb |
| 2015-02-23 | 201502270176AM | 0.560 ppb |
| 2015-02-23 | 201502270168AM | 1.20 ppb |
| 2015-02-23 | 201502270197AM | 0.480 ppb |
| 2015-02-24 | 201502270165AM | 0.620 ppb |
| 2015-02-24 | 201502270154AM | 0.700 ppb |
| 2015-02-24 | 201502270135AM | 0.910 ppb |
| 2015-02-24 | 201502270247AM | 0.900 ppb |
| 2015-02-25 | 201502270162AM | 0.460 ppb |
| 2015-02-25 | 201502270195AM | 0.720 ppb |
| 2015-05-26 | 201505290222AM | 0.990 ppb |
| 2015-05-26 | 201505290224AM | 0.250 ppb |
| 2017-09-13 | 370915025.1 | 1.000 ppb |
| 2017-09-13 | 370915024.1 | 1.000 ppb |
| 2017-09-13 | 370915023.1 | 1.000 ppb |
| 2017-09-13 | 370915027.1 | 1.000 ppb |
| 2017-09-13 | 370915028.1 | 1.000 ppb |
| 2017-09-13 | 370915022.1 | 1.000 ppb |
| 2017-09-13 | 370915030.1 | 1.000 ppb |
| 2017-09-13 | 370915029.1 | 2.00 ppb |
| 2017-09-13 | 370915021.1 | 1.000 ppb |
| 2017-09-13 | 370915020.1 | 1.000 ppb |
| 2017-09-13 | 370915026.1 | 1.000 ppb |