MTBE
Cathedral Gardens Water District
NOTE: Cathedral Gardens Water District purchases water from West Hempstead WD which is required to test for mtbe. Sample information shown below was taken by West Hempstead WD.
MTBE was used as gasoline oxygenation additive to boost the octane number. In 2005, MTBE was replaced by ethanol as a gasoline additive. MTBE causes cancers in rats.
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 | 63 | 0 | ND |
| 2019 | ND | 73 | 0 | ND |
| 2020 | ND | 46 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 62 | 0 | ND |
| 2023 | ND | 63 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 13 ppb
The EWG Health Guideline of 13 ppb for MTBE was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
All test results
NOTE: Cathedral Gardens Water District purchases water from West Hempstead WD which is required to test for mtbe. Sample information shown below was taken by West Hempstead WD.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-29 | 7041548003 | ND |
| 2018-01-29 | 7041548007 | ND |
| 2018-01-29 | 7041548001 | ND |
| 2018-01-29 | 7041548005 | ND |
| 2018-01-29 | 7041548004 | ND |
| 2018-02-02 | 7041915001 | ND |
| 2018-02-06 | 7042140001 | ND |
| 2018-02-06 | 7042140002 | ND |
| 2018-02-27 | 7043988003 | ND |
| 2018-02-27 | 7043988002 | ND |
| 2018-03-14 | 7045340001 | ND |
| 2018-04-11 | 7048032007 | ND |
| 2018-04-11 | 7048032003 | ND |
| 2018-05-09 | 7051070007 | ND |
| 2018-05-09 | 7051070009 | ND |
| 2018-05-09 | 7051070008 | ND |
| 2018-05-09 | 7051070001 | ND |
| 2018-05-09 | 7051070002 | ND |
| 2018-05-09 | 7051070004 | ND |
| 2018-05-29 | 7052990001 | ND |
| 2018-06-07 | 7054158001 | ND |
| 2018-07-12 | 7058043004 | ND |
| 2018-07-12 | 7058043005 | ND |
| 2018-07-12 | 7058043001 | ND |
| 2018-07-12 | 7058043003 | ND |
| 2018-07-12 | 7058043002 | ND |
| 2018-07-25 | 7059403002 | ND |
| 2018-07-25 | 7059403001 | ND |
| 2018-07-25 | 7059403004 | ND |
| 2018-07-30 | 7059795001 | ND |
| 2018-07-30 | 7059795002 | ND |
| 2018-07-30 | 7060374001 | ND |
| 2018-08-03 | 7060374002 | ND |
| 2018-08-08 | 7060867002 | ND |
| 2018-08-08 | 7060867003 | ND |
| 2018-08-08 | 7060867008 | ND |
| 2018-08-08 | 7060867007 | ND |
| 2018-08-08 | 7060867004 | ND |
| 2018-08-14 | 7061678001 | ND |
| 2018-08-14 | 7061458001 | ND |
| 2018-08-15 | 7061678003 | ND |
| 2018-08-15 | 7061678002 | ND |
| 2018-08-28 | 7062981001 | ND |
| 2018-09-06 | 7063920007 | ND |
| 2018-10-10 | 7067472005 | ND |
| 2018-10-10 | 7067472002 | ND |
| 2018-10-10 | 7067472007 | ND |
| 2018-10-10 | 7067472004 | ND |
| 2018-10-10 | 7067472001 | ND |
| 2018-10-10 | 7067472008 | ND |
| 2018-10-10 | 7067472006 | ND |
| 2018-10-22 | 7068648001 | ND |
| 2018-10-22 | 7068648002 | ND |
| 2018-10-29 | 7069357002 | ND |
| 2018-10-29 | 7069357001 | ND |
| 2018-11-08 | 7070471001 | ND |
| 2018-11-08 | 7070471003 | ND |
| 2018-11-08 | 7070471002 | ND |
| 2018-11-14 | 7071116001 | ND |
| 2018-11-14 | 7071116002 | ND |
| 2018-11-30 | 7072502001 | ND |
| 2018-11-30 | 7072502002 | ND |
| 2018-12-05 | 7072906007 | ND |
| 2019-01-16 | 7076814007 | ND |
| 2019-01-16 | 7076814001 | ND |
| 2019-01-16 | 7076814008 | ND |
| 2019-01-16 | 7076814002 | ND |
| 2019-01-16 | 7076814004 | ND |
| 2019-01-16 | 7076814005 | ND |
| 2019-01-23 | 7077404001 | ND |
| 2019-04-10 | 7085363002 | ND |
| 2019-04-10 | 7085363005 | ND |
| 2019-04-10 | 7085363001 | ND |
| 2019-04-10 | 7085363006 | ND |
| 2019-04-10 | 7085363003 | ND |
| 2019-04-10 | 7085363004 | ND |
| 2019-04-10 | 7085363011 | ND |
| 2019-05-01 | 7087793002 | ND |
| 2019-05-01 | 7087793004 | ND |
| 2019-05-01 | 7087793001 | ND |
| 2019-05-08 | 7088904001 | ND |
| 2019-05-13 | 7089255001 | ND |
| 2019-05-15 | 7089512001 | ND |
| 2019-05-20 | 7090136001 | ND |
| 2019-05-20 | 7090136002 | ND |
| 2019-05-29 | 7091299001 | ND |
| 2019-05-29 | 7091299002 | ND |
| 2019-06-06 | 7092440003 | ND |
| 2019-06-06 | 7092440001 | ND |
| 2019-06-09 | 7092440004 | ND |
| 2019-06-18 | 7094131002 | ND |
| 2019-06-18 | 7094131001 | ND |
| 2019-06-26 | 7095714001 | ND |
| 2019-06-28 | 7095864001 | ND |
| 2019-07-02 | 7096099001 | ND |
| 2019-07-02 | 7096099002 | ND |
| 2019-07-25 | 7098863001 | ND |
| 2019-07-25 | 7098863003 | ND |
| 2019-07-25 | 7098863002 | ND |
| 2019-07-25 | 7098863005 | ND |
| 2019-07-25 | 7098863004 | ND |
| 2019-07-29 | 7099198001 | ND |
| 2019-08-08 | 70100445002 | ND |
| 2019-08-13 | 70101278001 | ND |
| 2019-08-13 | 70101278002 | ND |
| 2019-08-13 | 70101278003 | ND |
| 2019-08-14 | 70101278007 | ND |
| 2019-08-14 | 70101278006 | ND |
| 2019-08-20 | 70102025001 | ND |
| 2019-08-20 | 70102025003 | ND |
| 2019-08-20 | 70102025002 | ND |
| 2019-08-20 | 70102025004 | ND |
| 2019-09-04 | 7010364004 | ND |
| 2019-09-04 | 70103640005 | ND |
| 2019-09-04 | 70103640003 | ND |
| 2019-09-04 | 70103640001 | ND |
| 2019-09-04 | 70103640002 | ND |
| 2019-09-10 | 70104348004 | ND |
| 2019-09-10 | 70104348002 | ND |
| 2019-09-10 | 70104348007 | ND |
| 2019-09-10 | 70104348008 | ND |
| 2019-09-10 | 70104348003 | ND |
| 2019-09-18 | 70105411003 | ND |
| 2019-09-18 | 70105411004 | ND |
| 2019-10-09 | 70107921005 | ND |
| 2019-10-09 | 70107921004 | ND |
| 2019-10-09 | 70107921002 | ND |
| 2019-10-09 | 70107921006 | ND |
| 2019-10-10 | 70107921001 | ND |
| 2019-10-10 | 70108059002-POCS | ND |
| 2019-10-10 | 70108059007 | ND |
| 2019-10-24 | 70109627001 | ND |
| 2019-10-29 | 70110058001 | ND |
| 2019-11-07 | 70111128003 | ND |
| 2019-11-14 | 70111841001 | ND |
| 2019-12-11 | 70114945003 | ND |
| 2020-01-14 | 70118212004 | ND |
| 2020-01-14 | 70118212002 | ND |
| 2020-01-14 | 70118212001 | ND |
| 2020-01-22 | 70119236002 | ND |
| 2020-01-28 | 70119236001 | ND |
| 2020-01-28 | 70119803002 | ND |
| 2020-01-28 | 70119803001 | ND |
| 2020-02-06 | 70120955001 | ND |
| 2020-02-19 | 70122357006 | ND |
| 2020-03-05 | 70124118006 | ND |
| 2020-04-09 | 70127648004 | ND |
| 2020-04-09 | 70127648001 | ND |
| 2020-04-09 | 70127648002 | ND |
| 2020-04-14 | 70128016003 | ND |
| 2020-04-14 | 70128016001 | ND |
| 2020-04-14 | 70128016005 | ND |
| 2020-04-14 | 70128016002 | ND |
| 2020-05-27 | 70132261006 | ND |
| 2020-06-11 | 70134269007 | ND |
| 2020-06-23 | 70135692001 | ND |
| 2020-07-08 | 70137425001 | ND |
| 2020-07-13 | 70138005002 | ND |
| 2020-07-13 | 70138005001 | ND |
| 2020-07-13 | 70139841001 | ND |
| 2020-07-14 | 70138140004 | ND |
| 2020-07-14 | 70138140001 | ND |
| 2020-07-14 | 70138140002 | ND |
| 2020-07-14 | 70138140003 | ND |
| 2020-07-14 | 70138140005 | ND |
| 2020-07-29 | 70140045001 | ND |
| 2020-07-31 | 70140305001 | ND |
| 2020-08-07 | 70140637002 | ND |
| 2020-08-07 | 70140637001 | ND |
| 2020-08-07 | 70140637003 | ND |
| 2020-08-12 | 70141583004 | ND |
| 2020-08-12 | 70141583006 | ND |
| 2020-09-15 | 70145975001 | ND |
| 2020-10-14 | 70149553002 | ND |
| 2020-10-14 | 70149553001 | ND |
| 2020-10-21 | 70150461003 | ND |
| 2020-10-26 | 70150979003 | ND |
| 2020-10-26 | 70150979004 | ND |
| 2020-10-26 | 70150979001 | ND |
| 2020-10-26 | 70150979002 | ND |
| 2020-11-18 | 0120104-01 | ND |
| 2020-12-09 | 70156107003 | ND |
| 2021-01-13 | 70159307004 | ND |
| 2021-01-27 | 70160707001 | ND |
| 2021-01-27 | 70160707002 | ND |
| 2021-01-27 | 70160707004 | ND |
| 2021-01-27 | 70160707003 | ND |
| 2021-02-22 | 70163280004 | ND |
| 2021-03-09 | 70165109001 | ND |
| 2021-04-21 | 70170105004 | ND |
| 2021-04-21 | 70170105003 | ND |
| 2021-04-21 | 70170105001 | ND |
| 2021-04-27 | 70170826001 | ND |
| 2021-04-27 | 70170826002 | ND |
| 2021-05-06 | 70171927007 | ND |
| 2021-06-01 | 70175050001 | ND |
| 2021-06-02 | 70175227001 | ND |
| 2021-06-09 | 70176276002 | ND |
| 2021-06-10 | 70176451001 | ND |
| 2021-07-08 | 70179813008 | ND |
| 2021-07-14 | 70180450001 | ND |
| 2021-07-14 | 70180450002 | ND |
| 2021-07-28 | 70182126004 | ND |
| 2021-07-28 | 70182126002 | ND |
| 2021-07-28 | 70182126001 | ND |
| 2021-08-10 | 70183574005 | ND |
| 2021-08-18 | 70184473001 | ND |
| 2021-09-15 | 70187617005 | ND |
| 2021-09-16 | 70187790001 | ND |
| 2021-10-07 | 70190348007 | ND |
| 2021-10-27 | 70192501001 | ND |
| 2021-11-17 | 70195054005 | ND |
| 2021-11-17 | 70195054001 | ND |
| 2021-11-23 | 70195701001 | ND |
| 2021-11-23 | 70195701002 | ND |
| 2021-11-23 | 70195701004 | ND |
| 2021-11-23 | 70195701005 | ND |
| 2021-12-08 | 70197139003 | ND |
| 2021-12-13 | 70197653001 | ND |
| 2022-01-20 | 70201493005 | ND |
| 2022-01-20 | 70201493004 | ND |
| 2022-02-10 | 70203791001 | ND |
| 2022-02-10 | 70203791008 | ND |
| 2022-03-08 | 70206697002 | ND |
| 2022-03-08 | 70206697004 | ND |
| 2022-03-08 | 70206697005 | ND |
| 2022-03-08 | 70206697003 | ND |
| 2022-03-14 | 70207332002 | ND |
| 2022-03-14 | 70207332003 | ND |
| 2022-03-16 | 70207637001 | ND |
| 2022-04-12 | 70210662001 | ND |
| 2022-04-20 | 70211665001 | ND |
| 2022-04-21 | 70211900001 | ND |
| 2022-04-27 | 70212523002 | ND |
| 2022-04-27 | 70212523001 | ND |
| 2022-04-27 | 70212523003 | ND |
| 2022-04-28 | 70212781002 | ND |
| 2022-04-28 | 40212781001 | ND |
| 2022-05-05 | 70213611001 | ND |
| 2022-05-09 | 70214000003 | ND |
| 2022-05-10 | 70214260002 | ND |
| 2022-05-19 | 70215330001 | ND |
| 2022-05-23 | 70215669001 | ND |
| 2022-06-02 | 70216709001 | ND |
| 2022-06-08 | 70217496001 | ND |
| 2022-06-09 | 70217797002 | ND |
| 2022-06-10 | 70217889003 | ND |
| 2022-06-14 | 7028353004 | ND |
| 2022-06-15 | 70218490002 | ND |
| 2022-06-20 | 70218851001 | ND |
| 2022-06-28 | 70219993001 | ND |
| 2022-07-12 | 70221822003 | ND |
| 2022-07-26 | 70223520003 | ND |
| 2022-07-26 | 70223526003 | ND |
| 2022-07-27 | 70223642001 | ND |
| 2022-07-27 | 70223642002 | ND |
| 2022-08-04 | 70224638001 | ND |
| 2022-08-04 | 70224638003 | ND |
| 2022-08-04 | 70224638002 | ND |
| 2022-08-10 | 70225228001 | ND |
| 2022-08-15 | 70225867003 | ND |
| 2022-08-18 | 70226524003 | ND |
| 2022-08-18 | 70226522003 | ND |
| 2022-09-14 | 70229756006 | ND |
| 2022-09-15 | 70229610006 | ND |
| 2022-09-15 | 70229610003 | ND |
| 2022-09-20 | 70230009001 | ND |
| 2022-10-04 | 70231902001 | ND |
| 2022-10-12 | 70233044005 | ND |
| 2022-10-12 | 70233044003 | ND |
| 2022-10-12 | 70233044006 | ND |
| 2022-10-12 | 70233044008 | ND |
| 2022-10-12 | 70233044007 | ND |
| 2022-10-12 | 70233044004 | ND |
| 2022-10-31 | 70235054003 | ND |
| 2022-11-01 | 70235159003 | ND |
| 2022-11-09 | 70236152001 | ND |
| 2022-11-21 | 70237527003 | ND |
| 2022-12-09 | 70239401002 | ND |
| 2022-12-20 | 70240623003 | ND |
| 2022-12-27 | 70241375001 | ND |
| 2023-01-04 | 70242001001 | ND |
| 2023-01-05 | 70242222003 | ND |
| 2023-01-24 | 70244166003 | ND |
| 2023-02-01 | 70244887005 | ND |
| 2023-02-01 | 70244887002 | ND |
| 2023-02-01 | 70244887003 | ND |
| 2023-02-01 | 70244887004 | ND |
| 2023-02-16 | 70246633002 | ND |
| 2023-02-16 | 70246633003 | ND |
| 2023-02-17 | 70246751001 | ND |
| 2023-02-21 | 70247062003 | ND |
| 2023-03-07 | 70248528003 | ND |
| 2023-03-07 | 70248528001 | ND |
| 2023-03-08 | 70248725002 | ND |
| 2023-03-27 | 70250675001 | ND |
| 2023-03-27 | 70250675003 | ND |
| 2023-04-13 | 70252724001 | ND |
| 2023-04-25 | 70254035001 | ND |
| 2023-04-25 | 70254035003 | ND |
| 2023-05-03 | 70255041005 | ND |
| 2023-05-03 | 70255041008 | ND |
| 2023-05-03 | 70255041006 | ND |
| 2023-05-03 | 70255041003 | ND |
| 2023-05-03 | 70255041007 | ND |
| 2023-05-03 | 70255041004 | ND |
| 2023-05-17 | 70256677003 | ND |
| 2023-05-17 | 70256677001 | ND |
| 2023-06-08 | 70259001003 | ND |
| 2023-07-12 | 70262967001 | ND |
| 2023-07-24 | 70264332005 | ND |
| 2023-07-24 | 70264330003 | ND |
| 2023-07-24 | 70264330001 | ND |
| 2023-07-24 | 70264332004 | ND |
| 2023-08-01 | 70265219002 | ND |
| 2023-08-01 | 70265219004 | ND |
| 2023-08-01 | 70265219006 | ND |
| 2023-08-01 | 70265219003 | ND |
| 2023-08-09 | 70266344001 | ND |
| 2023-08-15 | 70267162001 | ND |
| 2023-08-31 | 70268975002 | ND |
| 2023-08-31 | 70268975001 | ND |
| 2023-09-12 | 70270104005 | ND |
| 2023-09-12 | 70270104001 | ND |
| 2023-09-12 | 70270104004 | ND |
| 2023-09-20 | 70271103003 | ND |
| 2023-09-20 | 70271103001 | ND |
| 2023-10-12 | 70274008005 | ND |
| 2023-10-30 | 70275897003 | ND |
| 2023-10-30 | 70275897001 | ND |
| 2023-11-14 | 70277696001 | ND |
| 2023-11-15 | 70277859001 | ND |
| 2023-11-15 | 70277859003 | ND |
| 2023-11-29 | 70279064003 | ND |
| 2023-11-29 | 70279064001 | ND |
| 2023-12-14 | 70281109001 | ND |
| 2023-12-14 | 70281109002 | ND |
| 2023-12-14 | 70281109007 | ND |
| 2023-12-14 | 70281109003 | ND |
| 2023-12-14 | 70281109004 | ND |
| 2023-12-14 | 70281109005 | ND |
| 2023-12-20 | 70281935003 | ND |
| 2023-12-20 | 70281935001 | ND |
| 2023-12-28 | 70282542001 | ND |