Water Quality Assessments

HW ensures the protection of groundwater resources through an interdisciplinary approach that integrates science, engineering, land use planning, and public education and outreach.  Our staff are adept at working with municipalities to promote aquifer and wellhead protection through regulatory reform and the development of best management practices (BMPs) and guidance documents.

We then work with communities to implement these regulatory changes and standards, beginning with public education and outreach assistance, and then assist with groundwater quality analysis, the design of infrastructure improvements, and water quality sampling and monitoring, as needed. 

Pleasant Bay Watershed Fertilizer Management Plan, Pleasant Bay Alliance
Illicit Discharge Detection Investigation Kimball Brook Watershed
Hydrologic and Water Quality Investigation of Savin Hill Cove
Boston, MA
Total Maximum Daily Load (TMDL) Development in Puerto Rico and the Virgin Islands
Groundwater Monitoring, The Pinehills,
Plymouth, MA

Contact Mark Nelson, PG, Principal Hydrogeologist, at mnelson@horsleywitten.com for more information about our groundwater quality protection and planning services.