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D & S Water Well Service Ltd.

Well Service for Durham and York Regions
Well, well, well … WELCOME to D & S Water Well Service

Your water well is a critical component in the efficient, safe and healthy running of your household. Trust its upkeep and maintenance to an experienced, reliable firm.

D & S Water Well Service Ltd is owned and operated by Derek Kokkinen and Scott Armstrong and is licensed by the Ontario Ministry of the Environment.

We specialize in:

  • No water / low water pressure trouble shooting and repair
  • Installation of new submersible pump pressure systems and constant pressure systems
  • Rural water filtration and service
  • Real estate water well inspections
  • Water well upgrades and unused well decommissions


With over 10 years in business on our own, more than 80% of our service calls / installations come from your referrals and our fellow trades. Word of mouth means everything to us, and we work hard to earn this ongoing public trust.
Constant Pressure Systems

Constant Pressure Systems

This variable-speed system keeps your well pumping with pressure equivalent to municipally-supplied water. The pressure is steady unlike traditional well systems, which fluctuate depending on demand.
Custom Water Filtration

Custom Water Filtration

This is a custom water filtration installation. Customizing can meet your individual needs by taking into consideration the characteristics of your water source. Each situation is different.
Pump Hoist

Pump Hoist

In this picture, an old-fashioned hand pump had to be removed to get access to pull the submersible pump that supplied the house.