MTBE
New York American Water - Sea Cliff
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.
105
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 | 0.299 ppb | 17 | 5 | ND - 1.40 ppb |
| 2015 | 0.333 ppb | 19 | 8 | ND - 0.910 ppb |
| 2016 | 0.0825 ppb | 20 | 3 | ND - 0.570 ppb |
| 2017 | 0.294 ppb | 15 | 5 | ND - 2.00 ppb |
| 2018 | 0.412 ppb | 16 | 10 | ND - 0.880 ppb |
| 2019 | 0.252 ppb | 18 | 7 | ND - 0.790 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | 1402068-001-POCS | ND |
| 2014-03-06 | 103383-003-POCS | ND |
| 2014-03-06 | 1403383-001-POCS | ND |
| 2014-03-06 | 1403383-003-POCS | ND |
| 2014-04-02 | 04187-001-POCS | ND |
| 2014-04-02 | 1404187-001-POCS | ND |
| 2014-04-02 | 1404187-003-POCS | ND |
| 2014-05-07 | 1405474-001-POCS | ND |
| 2014-06-10 | 1406727-001-POCS | 0.670 ppb |
| 2014-07-08 | 1407443-001-POCS | 1.40 ppb |
| 2014-07-08 | 1407443-003-POCS | ND |
| 2014-08-05 | 140828-001-POCS | 1.000 ppb |
| 2014-09-08 | 1409505-001-POCS | 1.10 ppb |
| 2014-10-07 | 1410466-001-POCS | 0.920 ppb |
| 2014-10-07 | 1410466-003-POCS | ND |
| 2014-11-12 | 1411766-001-POCS | ND |
| 2014-12-02 | 1412131-001-POCS | ND |
| 2015-01-05 | 1501102-003-POCS | ND |
| 2015-01-05 | 1501102-001-POCS | ND |
| 2015-02-04 | 1502203-001-POCS | 0.750 ppb |
| 2015-03-03 | 1503130-001-POCS | 0.910 ppb |
| 2015-04-08 | 1504541-001-POCS | 0.910 ppb |
| 2015-05-07 | 1505554-001-POCS | 0.800 ppb |
| 2015-05-07 | 1505537-001-POCS | ND |
| 2015-05-20 | 1505E69-001-POCS | ND |
| 2015-06-15 | 1506B92-001-POCS | 0.880 ppb |
| 2015-07-08 | 1507488-001 | 0.680 ppb |
| 2015-07-08 | 1507488-003 | ND |
| 2015-08-05 | 1508310-001 POCS | 0.710 ppb |
| 2015-09-15 | 1509A69-001 | 0.680 ppb |
| 2015-09-15 | 1509A69-003 | ND |
| 2015-10-06 | 1510358-001 | ND |
| 2015-10-06 | 1510358-003 | ND |
| 2015-11-09 | 1511661-003 | ND |
| 2015-11-09 | 1511661-001 | ND |
| 2015-12-02 | 1512184-001 | ND |
| 2016-01-11 | 1601562-001 | ND |
| 2016-01-26 | 1601G80-001 | ND |
| 2016-03-01 | 1603105-001 | ND |
| 2016-03-01 | 1603105-003 | ND |
| 2016-04-06 | 1604546-003 | ND |
| 2016-04-06 | 1604546-001 | ND |
| 2016-05-03 | 1605198-003 | ND |
| 2016-05-03 | 1605198-001 | ND |
| 2016-06-08 | 1606789-003 | ND |
| 2016-06-08 | 1606789-001 | ND |
| 2016-07-06 | 1607433-001 | ND |
| 2016-07-06 | 1607433-003 | 0.570 ppb |
| 2016-08-02 | 1608166-002 | ND |
| 2016-08-02 | 1608166-005 | 0.550 ppb |
| 2016-09-07 | 1609450-003 | ND |
| 2016-09-07 | 1609450-001 | ND |
| 2016-10-04 | 701176002 | ND |
| 2016-10-06 | 701359002 | ND |
| 2016-11-02 | 703523001 | 0.530 ppb |
| 2016-12-06 | 706116001 | ND |
| 2017-01-04 | 708295001 | ND |
| 2017-02-07 | 7010806001 | 2.00 ppb |
| 2017-03-07 | 7012749001 | ND |
| 2017-04-04 | 7014847001 | ND |
| 2017-04-24 | 7016671002 | ND |
| 2017-05-02 | 7017429001 | ND |
| 2017-06-06 | 7020461001 | ND |
| 2017-06-13 | 7021163001 | ND |
| 2017-07-05 | 7023139003 | ND |
| 2017-07-05 | 7023139001 | 0.710 ppb |
| 2017-08-01 | 7025787002 | ND |
| 2017-09-05 | 7028919001 | 0.550 ppb |
| 2017-10-02 | 7031587001 | ND |
| 2017-11-07 | 7035028001 | 0.590 ppb |
| 2017-12-05 | 7037238001 | 0.560 ppb |
| 2018-01-09 | 7039910001 | ND |
| 2018-02-08 | 7042474001 | 0.640 ppb |
| 2018-03-06 | 7044573001 | 0.640 ppb |
| 2018-04-03 | 7047080001 | 0.590 ppb |
| 2018-05-01 | 7050134001 | 0.610 ppb |
| 2018-06-05 | 7053754001 | ND |
| 2018-07-03 | 7057077001 | ND |
| 2018-07-03 | 7057077003 | 0.770 ppb |
| 2018-08-02 | 7060231003 | 0.710 ppb |
| 2018-08-02 | 7060231001 | ND |
| 2018-08-07 | 7060647001 | ND |
| 2018-09-04 | 7063575001 | 0.880 ppb |
| 2018-10-02 | 7066538001 | 0.710 ppb |
| 2018-10-09 | 7067280001 | ND |
| 2018-11-28 | 7072200001 | 0.540 ppb |
| 2018-12-19 | 7074419001 | 0.500 ppb |
| 2019-01-15 | 7076606001 | ND |
| 2019-01-15 | 7076606003 | ND |
| 2019-02-05 | 7078364002 | ND |
| 2019-03-19 | 7082788001 | ND |
| 2019-04-02 | 7084234003 | ND |
| 2019-04-02 | 7084234001 | 0.630 ppb |
| 2019-05-14 | 7089462004 | ND |
| 2019-05-14 | 7089462001 | 0.540 ppb |
| 2019-06-03 | 7091767001 | 0.590 ppb |
| 2019-07-09 | 7096833003 | ND |
| 2019-07-09 | 7096833001 | 0.790 ppb |
| 2019-08-05 | 7099950001 | 0.660 ppb |
| 2019-08-05 | 7099950003 | ND |
| 2019-09-03 | 70103523003 | ND |
| 2019-09-03 | 70103523001 | 0.580 ppb |
| 2019-10-02 | 70106994001 | ND |
| 2019-10-23 | 70109466001 | 0.740 ppb |
| 2019-11-25 | 70113095001 | ND |