Howard is a hydrogeologist, certified by the American Institute
of Hydrology, chartered by the British Geological Society
and registered as a Professional Geoscientist with the Association
of Professional Geoscientists of Ontario. He has wide experience
in all aspects of groundwater resource evaluation, management
He was elected President of the International
Association of Hydrogeologists (IAH) in September 2012 (in 2016 became Past-President), and is a Co-Director of the IAH Urban Groundwater Network (IAH-UGN).
He is also Director of the Groundwater Research Group at the University
of Toronto. Since the mid-1970's he has worked on numerous
applied projects in eastern Canada, UK, the West Indies,
Australia and equatorial Africa, publishing articles on
topics that range from numerical flow modeling and contaminant
migration to environmental isotopes and borehole geophysics.
In much of this work, he has focussed special attention
on point and non-point sources of groundwater contamination
and on the sub-surface transport and modeling of both reactive
and non-reactive groundwater constituents.
regional projects have included the long-term sustainability
of well yields in bedrock aquifers of Uganda, the use of
fossil groundwaters in the Sahel of Mali and Niger as a
means of reducing desertification, and the origin of saline
lakes in southeastern Australia. He has also carried out
considerable research on the intrusion of saline groundwater
into karstic carbonates of the Clarendon Plains, Jamaica
and beneath Pacific atolls. Much of his current work is in south-east Asia and involves the the managment of aquifers in the Loess Plateau.