Terry Foster
Maryland Master Plumber #98433

The Plumber Who Dives Deeper

Terry Foster is the Maryland Licensed Master Plumber & Gas Fitter behind Deep Dive Plumbing Maryland. Terry holds Maryland Master Plumber License #98433 — one of the highest plumbing credentials issued by the Maryland Department of Labor. Every technical job performed by Deep Dive Plumbing Maryland is done by or directly supervised by Terry.

Terry's approach is diagnostic-first. Before recommending any repair or replacement, he evaluates the full system — not just the component that failed. For well pump calls, that means checking the electrical system, testing the pressure tank, measuring the well's yield, and testing the water quality before pulling the pump. For water treatment calls, that means testing the water before recommending any equipment.

This approach takes more time upfront. It also means the repair lasts — because the root cause is addressed, not just the symptom. It is why Deep Dive Plumbing Maryland has a 5.0 star rating on Google and why customers call us back when they have a new problem.

Terry specializes in well water systems, water treatment, and underground sewer work — the three areas where diagnostic skill matters most and where the consequences of guessing are highest. He has diagnosed and repaired well systems throughout Calvert County and Anne Arundel County, including low-yield wells, iron-fouled systems, and complex multi-component water treatment installations.

Terry is also a licensed Gas Fitter — qualified to work on gas lines, gas water heaters, and gas appliances throughout Maryland. This credential is separate from the plumbing license and requires its own examination and continuing education.