Tom Walski, Ph.D., P.E.

Thomas Walski is a senior product manager at Bentley Systems, Inc. He has 40 years of experience in applied hydraulics. He is author of hundreds of journal papers and conference presentations and is the author or co-author of several books. He has won numerous awards for his work such as the best distribution and plant operation paper in the Journal AWWA on three occasions. In addition to developing software, he has served as a distribution system operations manager, engineering manager for a large water company, executive director at a regional sewer system and a university professor.

What’s the Value of Nonrevenue Water?

December 1, 2022

Everyone wants to reduce water loss. No one likes to see water running over the ground. But people who understand the water industry know that..

We Heard You— Check Out the OpenFlows WaterGEMS Updated Control Editor

October 10, 2022

OK, even I’ll admit it. The old control statement editor in OpenFlows WaterGEMS was not one of our most user-friendly features. From a software..

One Hydrant vs. Two Hydrant Flow Test

September 22, 2022

Pretty much everyone who has worked in water distribution has been involved with hydrant flow testing at one time or another. It’s not very..

Do You Need Help? We Have It.

August 12, 2022

We regularly seek feedback from our users on how we’re doing. In a recent survey, we received excellent scores across the board on our OpenFlows..

Is Real-Time Control Real?

August 9, 2022

If you follow the research literature on water, you will see all sorts of papers being published about Real-Time Control (RTC) of water systems. I..

What Happens When the Power Drops Out?

July 19, 2022

Power outages don’t happen often in developed countries, but they do happen. Pump stations are fed by the power grid, so when the power goes out, it..

Real-Time Model Maintenance

June 29, 2022

We can agree that hydraulic models of water and wastewater systems are valuable tools. They are important in addressing master planning studies,..

Where Did Real-Time Modeling and Digital Twins Come From?

June 23, 2022

I recently returned from the 2022 AWWA Annual Conference. Two popular trends discussed at the conference were real-time modeling and digital twins...

Water Quality and Living at the Bottom of a Bag

May 19, 2022

In general, water quality tends to deteriorate with water age as disinfectant residual decreases, microbial activity increases, and disinfectant..

Are Your Pressure Gauges Calibrated?

May 10, 2022

Pumps & Systems magazine had a good article recently on the need to calibrate pressure gauges. They pointed out that pressure gauges (and sensors)..