Chromium (total)
Aqua NJ - Hamilton Square
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | 0.354 ppb | 7 | 6 | ND - 0.820 ppb |
2014 | 0.373 ppb | 16 | 11 | ND - 1.30 ppb |
2015 | 0.760 ppb | 5 | 3 | ND - 1.40 ppb |
2016 | 3.28 ppb | 4 | 4 | 2.80 ppb - 3.80 ppb |
2017 | 1.62 ppb | 5 | 3 | ND - 2.90 ppb |
2018 | 1.62 ppb | 5 | 4 | ND - 2.60 ppb |
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 |
---|---|---|
2013-10-24 | AE12938 | 0.200 ppb |
2013-10-24 | AE12947 | 0.370 ppb |
2013-10-24 | AE12941 | 0.420 ppb |
2013-10-24 | AE12944 | 0.820 ppb |
2013-10-24 | AE12935 | 0.260 ppb |
2013-10-24 | AE12932 | ND |
2013-10-24 | AE12929 | 0.410 ppb |
2014-01-21 | AE21757 | 0.490 ppb |
2014-01-21 | AE21760 | 0.370 ppb |
2014-04-15 | AE30069 | 0.240 ppb |
2014-04-15 | AE30078 | 0.350 ppb |
2014-04-15 | AE30075 | 0.370 ppb |
2014-04-15 | AE30072 | ND |
2014-04-16 | AE30231 | 1.000 ppb |
2014-04-16 | AE30234 | 0.310 ppb |
2014-05-20 | AE33869 | 0.370 ppb |
2014-05-27 | AE34676 | ND |
2014-05-27 | AE34672 | ND |
2014-05-27 | AE34680 | ND |
2014-05-27 | AE34668 | 1.30 ppb |
2014-05-27 | AE34684 | ND |
2014-07-31 | AE42799 | 0.450 ppb |
2014-07-31 | AE42797 | 0.710 ppb |
2015-08-11 | AE87904 | ND |
2015-08-11 | AE87901 | 1.30 ppb |
2015-08-19 | AE88699 | ND |
2015-08-19 | AE88705 | 1.40 ppb |
2015-08-19 | AE88702 | 1.10 ppb |
2016-11-30 | AF37131 | 2.80 ppb |
2016-11-30 | AF37135 | 3.40 ppb |
2016-11-30 | AF37133 | 3.80 ppb |
2016-12-06 | AF37646 | 3.10 ppb |
2017-02-07 | AF42937 | 2.90 ppb |
2017-06-27 | AF55624 | ND |
2017-06-27 | AF55622 | 2.80 ppb |
2017-06-27 | AF55620 | 2.40 ppb |
2017-11-08 | AF68719 | ND |
2018-03-13 | AF78763 | 2.00 ppb |
2018-06-19 | AF87340 | 2.60 ppb |
2018-06-19 | AF87347 | ND |
2018-06-19 | AF87344 | 2.10 ppb |
2018-08-20 | AF93346 | 1.40 ppb |