The Forgotten Water Sources in Healthcare

The Water Sources Everyone Forgets About

When healthcare facilities think about water management, the focus is usually directed toward the obvious sources: patient room sinks, showers, water heaters, and cooling towers.

Those systems certainly deserve attention. They are among the most common areas evaluated during water management programs and Legionella risk assessments.

However, some of the greatest risks in a facility often come from the water sources that receive the least attention.

The reality is that water exists throughout healthcare environments in far more places than most people realize. Every one of those locations has the potential to develop biofilm, experience stagnation, or create conditions that allow waterborne pathogens to grow.

A comprehensive water management program must look beyond the obvious.

Waterborne Pathogens Do Not Care About Department Boundaries

One of the biggest challenges in healthcare is that water systems are often managed by multiple departments.

Facilities teams may oversee plumbing systems.

Environmental services may maintain certain equipment.

Clinical departments may operate specialized devices.

Infection prevention teams monitor patient safety outcomes.

Because responsibility is spread across several groups, some water sources can unintentionally fall through the cracks.

That is where risk begins.

Commonly Overlooked Water Sources

Ice Machines

Ice is frequently viewed as food rather than water.

However, ice machines are directly connected to the potable water system and can develop biofilm if not properly maintained.

Patients, visitors, and staff may consume ice daily, making routine maintenance and monitoring critical.

Emergency Eyewash Stations and Safety Showers

These systems often sit unused for long periods of time.

Extended stagnation creates ideal conditions for biofilm formation and declining disinfectant residuals.

Regular activation and flushing are essential to maintaining water quality.

Decorative Water Features

Many healthcare facilities have removed decorative fountains due to infection prevention concerns.

For facilities that still operate them, these features can generate aerosols and require close monitoring.

The CDC has linked decorative water features to multiple Legionnaires' disease outbreaks over the years.

Hydrotherapy and Rehabilitation Equipment

Physical therapy pools, whirlpools, and hydrotherapy equipment involve warm water and frequent patient exposure.

Without proper maintenance, these systems can become reservoirs for microbial growth.

Humidifiers and Respiratory Equipment

Water used in respiratory care environments requires careful management.

Patients receiving respiratory treatments are often among the most vulnerable populations within a healthcare facility.

Dental Water Systems

In facilities with dental clinics, waterlines can support significant biofilm growth if not properly maintained.

The narrow tubing commonly found in dental systems creates an environment where biofilm can develop rapidly.

Dialysis Support Systems

Dialysis patients are among the most susceptible populations to waterborne pathogens.

While dialysis water receives significant oversight, support equipment and ancillary water connections should not be overlooked during risk assessments.

Laboratory and Research Equipment

Laboratory sinks, water baths, purification systems, and specialty equipment can experience periods of low use and stagnation.

These systems are often outside the normal focus of facility water management efforts.

Utility and Janitorial Closets

Mop sinks, hose bibs, and infrequently used service sinks may not receive regular attention.

Yet these fixtures can become stagnant and contribute to water quality issues within portions of the plumbing system.

The Challenge of Infrequent Use

One common theme connects many forgotten water sources:

They are not used regularly.

Water that sits stagnant loses disinfectant residuals over time.

As disinfectant levels decline, biofilm can develop.

Biofilm provides protection and nutrients for microorganisms, including Legionella and other opportunistic waterborne pathogens.

This is why water management programs should focus not only on where water exists, but also on how frequently it moves.

A Risk Assessment Is Only as Good as Its Inventory

One of the most important steps in any water management program is creating a complete inventory of water-containing devices and systems.

Facilities cannot manage risks they do not know exist.

The most effective programs routinely review:

• Water system modifications

• New construction projects

• Equipment additions

• Departmental changes

• Areas with reduced occupancy

• Previously unidentified water sources

Every change to a facility can introduce new water management considerations.

The Goal Is Prevention

Most healthcare-associated waterborne disease events are not caused by a single catastrophic failure.

Instead, they often develop through a series of small oversights that accumulate over time.

An overlooked ice machine.

An unused eyewash station.

A forgotten therapy tub.

A low-use sink.

Each may seem insignificant on its own. Together, they can create conditions that support microbial growth and increase patient risk.

The strongest water management programs are the ones that look beyond the obvious and continually ask a simple question:

"What water sources are we forgetting?"

Closing Thought

"Risk rarely develops where everyone is looking. It develops where nobody thinks to look."

That is why effective water management is not just about monitoring the systems you know about. It is about identifying the systems everyone else forgot.