Water is the essence of all life, and Griswold Water Systems’ commitment to treating water in a responsible way is the essence of our mission.

Griswold Water Systems

A member of the Griswold family of companies, and started in 1936 by Donald Griswold, we share water business experience with our international sister companies, Cla-Val and Griswold Controls. After two decades of producing American-made high-quality welded filtration products, including a complete line of high-efficiency centrifugal separators and cooling tower basin sweepers, Griswold Water Systems pioneered non-chemical water treatment using electrodynamic field generation. Our unique synergy between advanced filtration and the most advanced water treatment has meant cleaner, greener, and more reliable HVAC systems for our customers.

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3 Critical Advantages

Our products have eliminated scale and bacteria, and controlled corrosion in thousands of our customers’ cooling systems, without the use of toxic chemicals. The three-fold result: more reliable HVAC system operation, a truly green water treatment solution, and an excellent return on investment.

It’s A Simple Pledge

We provide our customers with chemical-free water treatment that allows their cooling systems to enjoy long-term stability and operate consistently and reliably. GWS guarantees customer satisfaction by:

  • Engineering integrated water treatment and filtration products
  • Maintaining a high level of applications experience and an in-depth water treatment knowledge base
  • Manufacturing the best in shop durable products
  • Providing dedicated field service to enhance our customers’ enlightened operational practices, and
  • Supplying exemplary electronic monitoring to augment regular human oversight

Griswold Advanced Solutions


IntegraClean 2.0™
Maximize Steady State Operation

Our flagship, integrated water treatment and solids management system for cooling tower use, is your permanent solution. IntegraClean incorporates efficient solids management, chemical-free water treatment, remote monitoring, blowdown/conductivity control system, and service.



Effective Solids Management

An advanced tower basin cleaning system with energy-efficient, low-head basin sweepers, a smaller pump package, and welded solids centrifugal separator with valve actuated purge and timer control panel.



Chemical Free Water Treatment

This is the most advanced non-chemical system available with 4x the signal strength of the closest competitor, NEMA 4 weatherproof, submersible reaction chamber design, and software-based digital processor. Comes with GWS certified service.


Traditional Solids Management

Traditional Solids Management

Our broad product line includes sidestream and full flow centrifugal separators, eductor/nozzle basin sweeping systems, and high-end carbon steel sand filters.

Sand Filter Systems

Sand Filters

Sand Filters designed as a self-contained unit for your filtration needs. Models are compact, durable, and effective filtration packages.  Our sand filter comes complete with their own pump, pipe manifolds, pressure gauges, basket strainer, a pump control panel and backwash controller.


RO Systems

RO Systems

GWS’ Commercial Reverse Osmosis Small Footprint Skid RO System has a Siemens or Allen Bradley HMI PLC UL control panel with remote and network Profinet access. TheseASME grade systems are built with the highest quality components.


Custom Skids

Custom Pump Skids

GWS’ high-quality welding and assembly services provide an array of custom products including enclosures multiple sizes (including NEMA 4, 4X, and 12), control panel parts such as starters, contactors, HOA switches, disconnects, etc.


Pot Feeders

Pot Feeders

GWS high-quality, welded chemical bypass feeders are made to ASME specifications and come with premium features including our innovative safety bar design.




We have all the components your systems need for proper upkeep including cartridge and bag filters, valves, o-rings, stands, baskets, and more.