Chromium (total)
Lido-point Lookout Water District
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 39 | 0 | ND |
| 2019 | ND | 31 | 0 | ND |
| 2020 | ND | 45 | 0 | ND |
| 2021 | ND | 42 | 0 | ND |
| 2022 | ND | 27 | 0 | ND |
| 2023 | 3.91 ppb | 22 | 1 | ND - 86.0 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-01-10 | 7040032003-PRI | ND |
| 2018-01-10 | 7040032001-PRI | ND |
| 2018-01-10 | 7040032002-PRI | ND |
| 2018-02-06 | 7042133002-PRI | ND |
| 2018-02-06 | 7042133001-PRI | ND |
| 2018-02-06 | 7042133003-PRI | ND |
| 2018-03-07 | 7044701003-PRI | ND |
| 2018-03-07 | 7044701002-PRI | ND |
| 2018-03-07 | 7044701001-PRI | ND |
| 2018-04-10 | 7047837002-PRI | ND |
| 2018-04-10 | 7047837003-PRI | ND |
| 2018-04-10 | 7047837001-PRI | ND |
| 2018-05-08 | 7050980002-PRI | ND |
| 2018-05-08 | 7050980001-PRI | ND |
| 2018-05-08 | 7050980003-PRI | ND |
| 2018-06-14 | 7054970001-PRI | ND |
| 2018-06-14 | 7054970003-PRI | ND |
| 2018-06-14 | 7054970002-PRI | ND |
| 2018-07-05 | 7057124001 | ND |
| 2018-07-10 | 7057677002-PRI | ND |
| 2018-07-10 | 7057677003-PRI | ND |
| 2018-07-10 | 7057677001-PRI | ND |
| 2018-07-20 | 7058917001 | ND |
| 2018-07-24 | 7059241001-PRI | ND |
| 2018-08-05 | 7060832003-PRI | ND |
| 2018-08-08 | 7060832001-PRI | ND |
| 2018-08-08 | 7060832002-PRI | ND |
| 2018-09-13 | 7064721003 | ND |
| 2018-09-13 | 7064721002 | ND |
| 2018-09-13 | 7064721001 | ND |
| 2018-10-09 | 7067334001-PRI | ND |
| 2018-10-09 | 7067334003-PRI | ND |
| 2018-10-09 | 7067334002-PRI | ND |
| 2018-11-01 | 7069717002 | ND |
| 2018-11-01 | 7069717001 | ND |
| 2018-11-01 | 7069717003 | ND |
| 2018-12-03 | 7072628004-PRI | ND |
| 2018-12-03 | 7072628005 | ND |
| 2018-12-03 | 7072628006-PRI | ND |
| 2019-01-03 | 7075453003-PRI | ND |
| 2019-01-03 | 7075453002-PRI | ND |
| 2019-01-03 | 7075453001-PRI | ND |
| 2019-02-05 | 7078359001-PRI | ND |
| 2019-02-05 | 7078359003-PRI | ND |
| 2019-02-05 | 7078359002-PRI | ND |
| 2019-03-14 | 7082345003-PRI | ND |
| 2019-03-14 | 7082345002-PRI | ND |
| 2019-03-14 | 7082345001-PRI | ND |
| 2019-04-04 | 7084642001-PRI | ND |
| 2019-04-04 | 7084642002-PRI | ND |
| 2019-04-04 | 7084642003-PRI | ND |
| 2019-05-02 | 7087916003-PRI | ND |
| 2019-05-02 | 7087916002-PRI | ND |
| 2019-05-02 | 7087916001-PRI | ND |
| 2019-06-06 | 7092442002 | ND |
| 2019-06-06 | 7092442001 | ND |
| 2019-06-06 | 7092442003 | ND |
| 2019-07-06 | 7096826002-PRI | ND |
| 2019-07-06 | 7096826003-PRI | ND |
| 2019-07-09 | 7096826001-PRI | ND |
| 2019-08-01 | 7099784001-PRI | ND |
| 2019-08-13 | 701005003 | ND |
| 2019-08-13 | 70101005002 | ND |
| 2019-08-13 | 70101005001-PRI | ND |
| 2019-09-10 | 70104356001 | ND |
| 2019-09-10 | 70104356003-PRI | ND |
| 2019-09-10 | 70104356002-PRI | ND |
| 2019-10-09 | 70107898001-PRI | ND |
| 2019-10-09 | 70107898003-PRI | ND |
| 2019-10-09 | 70107898002-PRI | ND |
| 2020-01-14 | 70118229003-PRI | ND |
| 2020-01-14 | 70118229001-PRI | ND |
| 2020-01-14 | 70118229002-PRI | ND |
| 2020-02-05 | 70120620001-PRI | ND |
| 2020-02-05 | 70120620002-PRI | ND |
| 2020-02-05 | 70120620003-PRI | ND |
| 2020-03-04 | 70123875003-PRI | ND |
| 2020-03-04 | 70123875001-PRI | ND |
| 2020-03-04 | 70123875002-PRI | ND |
| 2020-04-02 | 70126829001-PRI | ND |
| 2020-04-02 | 70126829002-PRI | ND |
| 2020-04-02 | 70126829003-PRI | ND |
| 2020-05-05 | 70130002002-PRI | ND |
| 2020-05-05 | 70130002001-PRI | ND |
| 2020-05-05 | 70130002003-PRI | ND |
| 2020-06-04 | 70133344001-PRI | ND |
| 2020-06-04 | 70133344002 | ND |
| 2020-06-04 | 70133344003 | ND |
| 2020-06-29 | 70136292001-PRI | ND |
| 2020-06-29 | 70136292002-PRI | ND |
| 2020-06-29 | 70136292003-PRI | ND |
| 2020-07-02 | 70139123002-PRI | ND |
| 2020-07-15 | 70138292001-PRI | ND |
| 2020-07-15 | 70138292002-PRI | ND |
| 2020-07-15 | 70138292003-PRI | ND |
| 2020-07-22 | 70139123001 | ND |
| 2020-08-14 | 70141995002-PRI | ND |
| 2020-08-14 | 70141995001 | ND |
| 2020-09-30 | 70147753002 PRI | ND |
| 2020-09-30 | 70147753003 PRI | ND |
| 2020-10-08 | 70148839002-PRI | ND |
| 2020-10-08 | 70148839001-PRI | ND |
| 2020-10-08 | 70148839004-PRI | ND |
| 2020-10-08 | 70148839003-PRI | ND |
| 2020-10-08 | 70148839005-PRI | ND |
| 2020-11-12 | 70153204003-PRI | ND |
| 2020-11-12 | 70153204001-PRI | ND |
| 2020-11-12 | 70153204002-PRI | ND |
| 2020-11-19 | 70154127002-PRI | ND |
| 2020-11-19 | 70154127001 | ND |
| 2020-12-03 | 70155408003-PRI | ND |
| 2020-12-03 | 70155408002-PRI | ND |
| 2020-12-03 | 70155408001-PRI | ND |
| 2020-12-15 | 70156696001-PRI | ND |
| 2020-12-15 | 70156696002-PRI | ND |
| 2021-01-06 | 70158510001-PRI | ND |
| 2021-01-06 | 70158510003-PRI | ND |
| 2021-01-06 | 70158510002-PRI | ND |
| 2021-03-04 | 70164711003-PRI | ND |
| 2021-03-04 | 70164711002-PRI | ND |
| 2021-03-04 | 70164711001-PRI | ND |
| 2021-04-08 | 70168399003-PRI | ND |
| 2021-04-08 | 70168399001-PRI | ND |
| 2021-04-08 | 70168399002-PRI | ND |
| 2021-05-05 | 70171749001-PRI | ND |
| 2021-05-05 | 70171749002-PRI | ND |
| 2021-05-05 | 70171749003-PRI | ND |
| 2021-05-25 | 70174340007-PRI | ND |
| 2021-06-03 | 70175492001-PRI | ND |
| 2021-06-03 | 70175492003-PRI | ND |
| 2021-06-03 | 70175544005-PRI | ND |
| 2021-06-03 | 70175492002-PRI | ND |
| 2021-07-15 | 70181428002-PRI | ND |
| 2021-07-15 | 70181428001-PRI | ND |
| 2021-07-15 | 70180616002-PRI | ND |
| 2021-07-15 | 70180616003-PRI | ND |
| 2021-07-15 | 70180616001-PRI | ND |
| 2021-08-05 | 70183115002-PRI | ND |
| 2021-08-05 | 70183117003-PRI | ND |
| 2021-08-05 | 70183115001-PRI | ND |
| 2021-08-05 | 70183117002-PRI | ND |
| 2021-08-05 | 70183117001-PRI | ND |
| 2021-09-03 | 70186404002 | ND |
| 2021-09-03 | 70186404005 | ND |
| 2021-09-03 | 70186404004 | ND |
| 2021-09-03 | 70186404001 | ND |
| 2021-09-03 | 70186404003 | ND |
| 2021-10-07 | 70190196002 | ND |
| 2021-10-07 | 70190196001 | ND |
| 2021-10-07 | 70190196005 | ND |
| 2021-10-07 | 70190196003-PRI | ND |
| 2021-10-07 | 70190196004 | ND |
| 2021-11-04 | 70193563004-PRI | ND |
| 2021-11-04 | 70193563005-PRI | ND |
| 2021-11-04 | 70193563002-PRI | ND |
| 2021-11-04 | 70193563003-PRI | ND |
| 2021-11-04 | 70193563001-PRI | ND |
| 2022-01-06 | 70200066002-PRI | ND |
| 2022-01-06 | 70200066005-PRI | ND |
| 2022-01-06 | 70200066001-PRI | ND |
| 2022-01-06 | 70200066003-PRI | ND |
| 2022-01-06 | 70200066004-PRI | ND |
| 2022-02-01 | 70202576002-PRI | ND |
| 2022-02-01 | 70202576004-PRI | ND |
| 2022-02-01 | 70202576003-PRI | ND |
| 2022-02-01 | 70202576001-PRI | ND |
| 2022-02-01 | 70202576005-PRI | ND |
| 2022-05-11 | 70214332002-PRI | ND |
| 2022-05-11 | 70214332001-PRI | ND |
| 2022-07-07 | 70221282003 | ND |
| 2022-07-21 | 70223042001 | ND |
| 2022-07-21 | 70223042002 | ND |
| 2022-08-04 | 70224569004 | ND |
| 2022-08-04 | 70224569002-PRI | ND |
| 2022-08-04 | 70224569001-PRI | ND |
| 2022-08-04 | 70224569003 | ND |
| 2022-08-04 | 70224569005 | ND |
| 2022-10-06 | 70232553002-PRI | ND |
| 2022-10-06 | 70232553001-PRI | ND |
| 2022-10-06 | 70232553003-PRI | ND |
| 2022-10-06 | 70232553004-PRI | ND |
| 2022-10-06 | 70232553005-PRI | ND |
| 2022-11-03 | 70235574002-PRI | ND |
| 2022-11-03 | 70235574001-PRI | ND |
| 2023-01-05 | 70242216001-PRI | ND |
| 2023-01-05 | 70242216003-PRI | ND |
| 2023-01-05 | 70242216002-PRI | ND |
| 2023-01-05 | 70242216004-PRI | ND |
| 2023-01-05 | 70242216005-PRI | ND |
| 2023-04-05 | 70251709005-PRI | ND |
| 2023-04-05 | 70251709002-PRI | ND |
| 2023-04-05 | 70251709004-PRI | ND |
| 2023-04-05 | 70251709003-PRI | ND |
| 2023-04-05 | 70251709001-PRI | ND |
| 2023-05-03 | 70255053001-PRI | ND |
| 2023-05-03 | 70255053002-PRI | ND |
| 2023-05-03 | 70255053003-PRI | ND |
| 2023-05-03 | 70255053004-PRI | ND |
| 2023-05-03 | 70255053005-PRI | ND |
| 2023-07-05 | 70261986003-PRI | ND |
| 2023-07-05 | 70261986002-PRI | ND |
| 2023-07-05 | 70261986001-PRI | ND |
| 2023-08-02 | 70265505002-PRI | ND |
| 2023-08-02 | 70265505001-PRI | ND |
| 2023-08-02 | 70265505003-PRI | ND |
| 2023-10-26 | 70275553001-PRI | 86.0 ppb |