Chromium (total)
City of Cleburne
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.
49
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 | 0.545 ppb | 13 | 6 | ND - 4.86 ppb |
| 2015 | 0.430 ppb | 19 | 14 | ND - 2.20 ppb |
| 2016 | 0.697 ppb | 6 | 4 | ND - 1.40 ppb |
| 2017 | 1.10 ppb | 4 | 2 | ND - 3.30 ppb |
| 2018 | 0.275 ppb | 4 | 1 | ND - 1.10 ppb |
| 2019 | ND | 3 | 0 | ND |
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 |
|---|---|---|
| 2014-02-20 | Q1405678002 | 4.86 ppb |
| 2014-06-10 | Q1420248008 | 0.540 ppb |
| 2014-06-10 | Q1420248007 | 0.580 ppb |
| 2014-07-08 | Q1426109007 | 0.346 ppb |
| 2014-07-08 | Q1426109001 | ND |
| 2014-07-08 | Q1426109003 | ND |
| 2014-07-08 | Q1426109005 | ND |
| 2014-07-08 | Q1426109009 | ND |
| 2014-07-08 | Q1426109013 | ND |
| 2014-07-08 | Q1426109011 | ND |
| 2014-07-08 | Q1426109015 | ND |
| 2014-10-22 | Q1453404001 | 0.389 ppb |
| 2014-10-22 | Q1453404003 | 0.374 ppb |
| 2015-01-21 | Q1501655015 | 0.354 ppb |
| 2015-01-21 | Q1501655017 | ND |
| 2015-01-21 | Q1501655019 | 0.393 ppb |
| 2015-01-21 | Q1501655013 | 0.334 ppb |
| 2015-01-21 | Q1501655023 | 0.293 ppb |
| 2015-01-21 | Q1501655011 | 0.346 ppb |
| 2015-01-21 | Q1501655001 | 0.244 ppb |
| 2015-01-21 | Q1501655005 | ND |
| 2015-01-21 | Q1501655025 | 0.368 ppb |
| 2015-01-21 | Q1501655021 | 0.370 ppb |
| 2015-01-21 | Q1501655009 | ND |
| 2015-01-21 | Q1501655007 | ND |
| 2015-01-21 | Q1501655003 | ND |
| 2015-01-28 | Q1503313013 | 0.880 ppb |
| 2015-01-28 | Q1503313012 | 0.820 ppb |
| 2015-01-28 | Q1503313011 | 0.670 ppb |
| 2015-01-28 | Q1503313040 | 2.20 ppb |
| 2015-04-01 | Q1511922003 | 0.446 ppb |
| 2015-04-01 | Q1511922001 | 0.446 ppb |
| 2016-01-19 | Q1602147007 | 0.680 ppb |
| 2016-04-11 | Q1614379018 | 1.000 ppb |
| 2016-04-11 | Q1614379017 | 1.10 ppb |
| 2016-11-14 | Q1649063013 | 1.40 ppb |
| 2016-11-14 | Q1649063012 | ND |
| 2016-11-14 | Q1649063014 | ND |
| 2017-01-26 | Q1703681002 | 1.10 ppb |
| 2017-04-18 | Q1715803006 | ND |
| 2017-04-18 | Q1715803005 | ND |
| 2017-05-24 | Q1721423002 | 3.30 ppb |
| 2018-01-11 | Q1801664010 | ND |
| 2018-01-11 | Q1801664009 | ND |
| 2018-01-11 | Q1801664008 | ND |
| 2018-04-10 | Q1814945003 | 1.10 ppb |
| 2019-01-29 | Q1904159022 | ND |
| 2019-01-29 | Q1904159023 | ND |
| 2019-01-29 | Q1904159004 | ND |