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Home » Topics » Plumbing & Mechanical Contractor » Water Treatment

Water Treatment
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Microscopic magnification Legionella pneumophila, Gram-negative bacillus that causes pneumonia.
Legionella

How Hidden Threats in Closed-Loop Water Systems Can Lead to Legionella Contamination

Biofilm and pipe-material challenges for Legionella risk.
Natalie Forster
Natalie Forster
January 15, 2026

How material selection, flow dynamics, temperature control and commissioning practices influence microbial and Legionella risk.


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Legionella growth chart

Reducing Legionella risk through comprehensive water management

ASA Platinum Supplier Spotlight: Watts
Shashwat Nath
December 30, 2025

While the risk of Legionella exists across many types of buildings, healthcare and long-term care facilities are particularly vulnerable. These buildings often have large, complex plumbing systems with extensive pipe networks, variable water usage, and numerous fixtures, all of which can create conditions conducive to bacterial growth if not properly managed. As a result, even well-designed and well-maintained systems require ongoing attention to minimize risk.


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Water Conservation eBook 2025 900x550 showing hands holding a globe under running water.

eBook | Water Conservation, Quality & Safety 2025

Advancing safer, more resilient water systems for a sustainable future
December 8, 2025

Check out the ways in which these companies are getting involved, making changes and learn how you can too.


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Lake Crescent, a glacially carved lake in Washington inside of Olympic National Park
Editorial Opinion | Kristen Bayles

Clear waters, clear purpose: reflections on protecting a vital resource

A journey through the Pacific Northwest offers a vivid reminder of the care and vigilance required to protect and deliver one of our most vital resources.
Kristen Bayles 200x200 headshot
Kristen R. Bayles
October 22, 2025

In nature, water moves in carefully balanced cycles: it falls as rain, runs along streams, and percolates through the soil. Each step in that journey is absolutely critical to maintaining water's life-giving power. Similarly, human plumbing and water systems are designed to replicate that balance.


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A male engineer is examining the pipe system and checking the data on his tablet.

Boiler efficiency starts with water chemistry

Why testing before installation matters.
Steve Wieland
October 10, 2025

Water chemistry significantly affects boilers, with scale buildup as small as one-sixteenth of an inch causing a 20 percent loss in heating efficiency and leading to corrosion, leaks, and potential boiler failure. Analyzing water chemistry beforehand is crucial for identifying necessary solutions and ensuring long-term performance.


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Legionella

Legionnaires' disease outbreak in New York infects more than 80

Three people have died from a Legionella outbreak that originated in a cooling tower.
August 11, 2025

Three people have died from the disease outbreak, and more than 20 have been hospitalized, according to the latest data from CNN.


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An engineering worker bending over, repairing a pipeline outside. The pipes are orange in color.

Building the future of plumbing science: IAPMO’s expanding water research capacity

Water research will shape the future of plumbing system design.
Christoph Lohr headshot
Christoph Lohr
July 1, 2025

This article highlights how IAPMO is enhancing research through the Water Demand Calculator®, the Innovation and Research Fund, and the integration of ESPRI, signaling a shift towards evidence-based practices that align science with codes.


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Exterior of a home having a State water heater installed.
Project Profile

State Water Heater Ultra Force case study: built to last

Two decades of exceptional hot water supply leads to like-for-like replacement of State commercial water heater.
Patrick Fulford
June 13, 2025

By 2026, the U.S. Department of Energy (DOE) is expected to require all commercial water heaters to use condensing technology. The SUF commercial water heater offers superior performance with advanced features and complies with evolving local and national regulations.


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Six tankless water heaters that feed the nutraceutical manufacturer’s operations.
Case Study

How to deliver large volumes of hot water quickly and intermittently

California-based nutraceutical manufacturer meets large, spiking hot-water needs with a combination tankless-and-tank system.
John O’Reilly
May 13, 2025

Proper water heater sizing in any application hinges primarily on user consumption within a given period. That much is probably obvious, even to someone who has never sized a water heater. What complicates matters, especially in a large commercial application, is the cadence of that usage.


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Maintenance female engineer working in hydroelectric power station. Checking the condition of the power equipment, and analysing the data and results of measurements with a mobile app.

Addressing water-related challenges through advocacy and standards development

ICC joins industry-defining pledge to tackle both water scarcity and AMR.
Tom Roberts 200x200 headshot
Tom Roberts
March 24, 2025

Plumbers are vital for ensuring safe water for drinking and sanitation. Their role will become even more critical as we face new water-related challenges.



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