Chromium (total)
California American Water Company - Suburban
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.
232
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 | 2.08 ppb | 63 | 36 | ND - 6.10 ppb |
| 2015 | 2.33 ppb | 63 | 37 | ND - 5.70 ppb |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 33 | 0 | ND |
| 2018 | ND | 51 | 0 | ND |
| 2019 | ND | 21 | 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 |
|---|---|---|
| 2014-05-06 | 5810-001-1207 | ND |
| 2014-05-06 | 5810-004-1330 | ND |
| 2014-05-06 | 5810-007-1105 | ND |
| 2014-05-06 | 5810-011-1238 | ND |
| 2014-05-06 | 5810-013-1210 | ND |
| 2014-05-06 | 5810-016-1115 | ND |
| 2014-05-06 | 5810-017-0930 | ND |
| 2014-05-06 | 5810-019-1030 | ND |
| 2014-05-06 | 5810-020-0810 | ND |
| 2014-05-06 | 5810-048-0950 | ND |
| 2014-05-06 | 5810-049-1100 | ND |
| 2014-05-06 | 5810-051-1030 | ND |
| 2014-05-06 | 5810-052-1130 | ND |
| 2014-05-06 | 5810-053-1215 | ND |
| 2014-05-07 | 5810-006-1020 | ND |
| 2014-05-07 | 5810-008-0935 | ND |
| 2014-05-07 | 5810-009-1340 | ND |
| 2014-05-07 | 5810-010-0945 | ND |
| 2014-05-07 | 5810-014-1005 | ND |
| 2014-05-07 | 5810-015-0930 | ND |
| 2014-05-07 | 5810-021-1128 | ND |
| 2014-05-07 | 5810-044-1100 | ND |
| 2014-05-07 | 5810-047-1135 | ND |
| 2014-05-08 | 5810-005-0900 | ND |
| 2014-05-08 | 5810-012-1145 | ND |
| 2014-06-17 | 1225-018-1150 | ND |
| 2014-10-06 | 27313301 | 2.60 ppb |
| 2014-10-06 | 27147901 | 6.10 ppb |
| 2014-10-06 | 27148101 | 5.60 ppb |
| 2014-10-06 | 27147801 | 1.000 ppb |
| 2014-10-06 | 27147701 | 2.80 ppb |
| 2014-10-06 | 27484301 | 5.00 ppb |
| 2014-10-06 | 27148401 | 2.50 ppb |
| 2014-10-06 | 27147201 | 2.70 ppb |
| 2014-10-06 | 27312701 | 3.50 ppb |
| 2014-10-06 | 27146101 | 3.10 ppb |
| 2014-10-06 | 27146301 | 5.80 ppb |
| 2014-10-06 | 27312601 | 3.40 ppb |
| 2014-10-06 | 27312901 | 3.10 ppb |
| 2014-10-06 | 27484201 | 4.10 ppb |
| 2014-10-06 | 27146701 | 3.40 ppb |
| 2014-10-06 | 27146601 | 5.00 ppb |
| 2014-10-06 | 27146901 | 4.80 ppb |
| 2014-10-06 | 27313901 | 2.70 ppb |
| 2014-10-08 | 27147401 | 3.90 ppb |
| 2014-10-08 | 27147601 | 5.90 ppb |
| 2014-10-08 | 27147301 | 3.50 ppb |
| 2014-10-08 | 27313001 | 1.70 ppb |
| 2014-10-08 | 27146501 | 1.10 ppb |
| 2014-10-08 | 27312401 | 4.70 ppb |
| 2014-10-08 | 27145801 | 4.20 ppb |
| 2014-10-08 | 27146001 | 3.40 ppb |
| 2014-10-08 | 27313701 | 5.20 ppb |
| 2014-10-08 | 27314201 | ND |
| 2014-10-15 | 3133177 | 4.60 ppb |
| 2014-10-15 | 3133187 | 0.700 ppb |
| 2014-10-15 | 3133185 | 1.10 ppb |
| 2014-10-15 | 27314001 | 4.80 ppb |
| 2014-10-15 | 3133175 | 1.60 ppb |
| 2014-11-18 | 27760001 | 5.60 ppb |
| 2014-12-16 | 27940301 | 2.10 ppb |
| 2014-12-16 | 27940401 | 5.10 ppb |
| 2014-12-17 | 27940501 | 4.40 ppb |
| 2015-01-28 | 28283801 | 4.80 ppb |
| 2015-04-06 | 28697901 | 3.00 ppb |
| 2015-04-06 | 28697801 | 4.40 ppb |
| 2015-04-06 | 28698001 | 4.80 ppb |
| 2015-04-06 | 28698401 | 4.30 ppb |
| 2015-04-06 | 28698301 | 2.50 ppb |
| 2015-04-06 | 28698201 | 0.500 ppb |
| 2015-04-06 | 28695401 | 5.00 ppb |
| 2015-04-06 | 28695501 | 2.90 ppb |
| 2015-04-06 | 28696501 | 5.00 ppb |
| 2015-04-06 | 28696101 | 4.70 ppb |
| 2015-04-06 | 28695901 | 4.90 ppb |
| 2015-04-06 | 28696601 | 3.80 ppb |
| 2015-04-06 | 28696301 | 4.30 ppb |
| 2015-04-06 | 28698901 | 3.00 ppb |
| 2015-04-07 | 28697401 | 4.90 ppb |
| 2015-04-07 | 28697301 | 3.90 ppb |
| 2015-04-07 | 28697501 | 5.20 ppb |
| 2015-04-07 | 28694801 | 5.70 ppb |
| 2015-04-07 | 28695101 | 4.20 ppb |
| 2015-04-07 | 28694901 | 3.90 ppb |
| 2015-04-07 | 28696401 | 3.60 ppb |
| 2015-04-07 | 28696901 | 3.80 ppb |
| 2015-04-07 | 28699001 | 5.00 ppb |
| 2015-04-07 | 28699101 | 3.50 ppb |
| 2015-04-08 | 28698501 | 4.50 ppb |
| 2015-04-08 | 28694701 | 4.50 ppb |
| 2015-04-09 | 28697201 | 3.90 ppb |
| 2015-04-09 | 28695201 | 4.00 ppb |
| 2015-04-09 | 28696801 | 3.20 ppb |
| 2015-04-09 | 28699201 | ND |
| 2015-04-15 | 28695801 | 4.50 ppb |
| 2015-04-15 | 28698701 | 5.30 ppb |
| 2015-04-23 | 28697601 | 2.80 ppb |
| 2015-04-23 | 28696701 | 3.50 ppb |
| 2015-07-08 | 1225-004-0850 | ND |
| 2015-07-08 | 1225-006-0950 | ND |
| 2015-07-08 | 1225-008-0910 | ND |
| 2015-07-08 | 1225-010-1110 | ND |
| 2015-07-08 | 1225-013-1100 | ND |
| 2015-07-08 | 1225-016-1030 | ND |
| 2015-07-08 | 1225-019-0940 | ND |
| 2015-07-08 | 1225-020-1205 | ND |
| 2015-07-08 | 1225-021-1030 | ND |
| 2015-07-09 | 1225-001-0945 | ND |
| 2015-07-09 | 1225-017-1045 | ND |
| 2015-07-14 | 1225-011-1030 | ND |
| 2015-07-15 | 1225-007-0920 | ND |
| 2015-07-15 | 1225-052-1025 | ND |
| 2015-07-20 | 1225-014-0920 | ND |
| 2015-07-20 | 1225-049-1210 | ND |
| 2015-07-22 | 1225-044-0845 | ND |
| 2015-07-22 | 1225-051-1110 | ND |
| 2015-07-27 | 1225-018-1005 | ND |
| 2015-07-27 | 1225-053-1220 | ND |
| 2015-07-28 | 1225-048-0900 | ND |
| 2015-07-30 | 1225-015-1035 | ND |
| 2015-08-26 | 1225-005-0930 | ND |
| 2015-08-27 | 1225-047-0750 | ND |
| 2015-09-16 | 28695701 | 2.20 ppb |
| 2015-09-16 | 28698601 | 4.90 ppb |
| 2015-09-16 | 30516301 | 2.10 ppb |
| 2015-12-08 | 1225-062-1130 | ND |
| 2016-10-24 | 1225-012-0930 | ND |
| 2017-09-19 | 5810-010-1420 | ND |
| 2017-09-19 | 5810-064-1520 | ND |
| 2017-09-19 | 5810-066-1520 | ND |
| 2017-09-26 | 5810-010-1328 | ND |
| 2017-09-26 | 5810-064-1343 | ND |
| 2017-09-26 | 5810-066-1348 | ND |
| 2017-10-03 | 5810-010-0730 | ND |
| 2017-10-03 | 5810-064-0745 | ND |
| 2017-10-03 | 5810-066-0750 | ND |
| 2017-10-10 | 5810-010-1442 | ND |
| 2017-10-10 | 5810-064-1500 | ND |
| 2017-10-10 | 5810-066-1505 | ND |
| 2017-10-12 | 1225-050-1240 | ND |
| 2017-10-17 | 5810-010-1342 | ND |
| 2017-10-24 | 5810-010-1350 | ND |
| 2017-10-24 | 5810-064-1405 | ND |
| 2017-10-24 | 5810-066-1410 | ND |
| 2017-10-31 | 5810-010-1228 | ND |
| 2017-10-31 | 5810-064-1243 | ND |
| 2017-10-31 | 5810-066-1248 | ND |
| 2017-11-07 | 5810-010-0915 | ND |
| 2017-11-07 | 5810-064-0930 | ND |
| 2017-11-07 | 5810-066-0935 | ND |
| 2017-11-14 | 5810-010-1226 | ND |
| 2017-11-14 | 5810-064-1241 | ND |
| 2017-11-14 | 5810-066-1246 | ND |
| 2017-11-21 | 5810-010-1118 | ND |
| 2017-11-21 | 5810-064-1133 | ND |
| 2017-11-21 | 5810-066-1138 | ND |
| 2017-11-28 | 5810-010-1337 | ND |
| 2017-11-28 | 5810-064-1352 | ND |
| 2017-11-28 | 5810-066-1357 | ND |
| 2017-12-06 | 1225-014-1140 | ND |
| 2018-02-20 | 5810-010-1030 | ND |
| 2018-02-20 | 5810-063-1045 | ND |
| 2018-02-20 | 5810-064-1050 | ND |
| 2018-02-20 | 5810-065-1055 | ND |
| 2018-02-20 | 5810-066-1100 | ND |
| 2018-03-12 | 5810-010-0936 | ND |
| 2018-03-12 | 5810-063-0950 | ND |
| 2018-03-12 | 5810-064-0955 | ND |
| 2018-03-12 | 5810-065-1000 | ND |
| 2018-03-12 | 5810-066-1005 | ND |
| 2018-05-01 | 5810-010-1145 | ND |
| 2018-05-01 | 5810-063-1200 | ND |
| 2018-05-01 | 5810-064-1205 | ND |
| 2018-05-01 | 5810-065-1210 | ND |
| 2018-05-01 | 5810-066-1215 | ND |
| 2018-08-06 | 1233-005-0810 | ND |
| 2018-08-06 | 1233-014-1055 | ND |
| 2018-08-06 | 1233-018-0915 | ND |
| 2018-08-06 | 1233-020-1240 | ND |
| 2018-08-06 | 1233-051-1230 | ND |
| 2018-08-08 | 1233-007-0945 | ND |
| 2018-08-08 | 1233-011-1305 | ND |
| 2018-08-08 | 1233-044-1110 | ND |
| 2018-08-08 | 1233-047-1230 | ND |
| 2018-08-09 | 1233-004-0905 | ND |
| 2018-08-09 | 1233-006-1300 | ND |
| 2018-08-09 | 1233-016-0815 | ND |
| 2018-08-09 | 1233-049-1100 | ND |
| 2018-08-09 | 1233-052-1250 | ND |
| 2018-08-13 | 1233-001-0850 | ND |
| 2018-08-13 | 1233-010-1140 | ND |
| 2018-08-13 | 1233-013-1015 | ND |
| 2018-08-13 | 1233-017-0900 | ND |
| 2018-08-13 | 1233-019-1015 | ND |
| 2018-08-13 | 1233-021-1020 | ND |
| 2018-08-14 | 5810-010-1415 | ND |
| 2018-08-14 | 1233-012-1130 | ND |
| 2018-08-14 | 1233-053-0905 | ND |
| 2018-08-14 | 1233-062-0840 | ND |
| 2018-08-14 | 5810-063-1425 | ND |
| 2018-08-14 | 5810-064-1430 | ND |
| 2018-08-14 | 5810-065-1435 | ND |
| 2018-08-14 | 5810-066-1440 | ND |
| 2018-09-11 | 1233-009-0845 | ND |
| 2018-10-17 | 1233-008-1030 | ND |
| 2018-10-17 | 1233-023-1115 | ND |
| 2018-11-06 | 5810-010-1030 | ND |
| 2018-11-06 | 5810-063-1035 | ND |
| 2018-11-06 | 5810-064-1040 | ND |
| 2018-11-06 | 5810-065-1045 | ND |
| 2018-11-06 | 5810-066-1050 | ND |
| 2019-02-12 | 5810-010-1100 | ND |
| 2019-02-12 | 5810-063-1105 | ND |
| 2019-02-12 | 5810-064-1110 | ND |
| 2019-02-12 | 5810-065-1115 | ND |
| 2019-02-12 | 5810-066-1120 | ND |
| 2019-05-14 | 5810-010-0940 | ND |
| 2019-05-14 | 5810-063-0945 | ND |
| 2019-05-14 | 5810-064-0950 | ND |
| 2019-05-14 | 5810-065-0955 | ND |
| 2019-05-14 | 5810-066-1000 | ND |
| 2019-08-12 | 1225-015-1215 | ND |
| 2019-08-14 | 1225-010-1230 | ND |
| 2019-08-14 | 1225-063-1235 | ND |
| 2019-08-14 | 1225-064-1240 | ND |
| 2019-08-14 | 1225-065-1245 | ND |
| 2019-08-14 | 1225-066-1250 | ND |
| 2019-11-04 | 1225-010-1222 | ND |
| 2019-11-04 | 1225-063-1237 | ND |
| 2019-11-04 | 1225-064-1247 | ND |
| 2019-11-04 | 1225-065-1304 | ND |
| 2019-11-04 | 1225-066-1320 | ND |