MTBE

Willingboro MUA

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	ND	3	0	ND
2015	0.248 ppb	5	4	ND - 0.440 ppb
2016	0.167 ppb	3	2	ND - 0.300 ppb
2017	0.371 ppb	7	4	ND - 1.40 ppb
2018	0.733 ppb	6	4	ND - 1.40 ppb
2019	0.683 ppb	6	5	ND - 1.000 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	L4860687-10	ND
2014-03-04	L4860709-2	ND
2014-03-04	L4860709-1	ND
2015-03-04	L5367913-2	0.150 ppb
2015-03-04	L5367913-1	0.300 ppb
2015-04-06	L5490273-1	0.350 ppb
2015-07-06	L5697933-1	0.440 ppb
2015-10-05	L5367928-1	ND
2016-01-20	L4354069-1	ND
2016-03-22	L5969178-2	0.200 ppb
2016-04-11	L6179330-1	0.300 ppb
2017-01-24	L6599766-1	ND
2017-01-25	L6599786-2	0.200 ppb
2017-03-29	L5969197-1	0.600 ppb
2017-05-31	L6509818-2	0.400 ppb
2017-08-08	370809052	ND
2017-11-02	371102132	1.40 ppb
2017-11-14	371115125	ND
2018-01-22	380124097	ND
2018-01-22	380124098	1.40 ppb
2018-01-23	380124096	ND
2018-04-09	380411136	0.900 ppb
2018-07-09	380711708	1.10 ppb
2018-10-10	381010715	1.000 ppb
2019-02-13	390214739	ND
2019-02-13	390214738	0.700 ppb
2019-02-26	390227720	0.900 ppb
2019-05-15	390515731	0.700 ppb
2019-08-14	390814730	0.800 ppb
2019-11-06	391106827	1.000 ppb