Spring Cleaning for Hospital Water Systems: A Compliance Checklist for Healthcare Facilities

When people think about spring cleaning, they usually picture deep cleaning floors, organizing storage areas, and catching up on maintenance tasks that were pushed aside during the winter months.

But one of the most important systems in a healthcare facility is often overlooked during seasonal maintenance: the building’s water system.

Hospital plumbing systems operate year-round, quietly delivering water to hundreds or even thousands of outlets. However, behind the scenes, those same systems can also create conditions that allow waterborne pathogens to grow if they are not actively monitored and managed.

Spring is an excellent time for healthcare facilities to pause and review the health of their water systems. A seasonal check can help identify issues early, confirm that monitoring programs are working, and ensure the facility remains aligned with current water management and infection prevention guidance.

In other words, spring cleaning shouldn’t stop at surfaces. It should extend to the water system as well.

Why Spring Is a Good Time to Review Your Water System

Throughout the winter months, many facilities experience changes in building usage patterns. Some wings may have lower occupancy, certain outlets may be used less frequently, and water temperatures and chemistry can fluctuate as seasonal conditions change.

These shifts can create ideal conditions for stagnation, temperature drift, and biofilm development, all of which increase the potential for microbial growth.

Waterborne pathogens such as Legionella, Pseudomonas aeruginosa, and non-tuberculous mycobacteria thrive in environments where water movement, disinfectant residual, or temperature control are not properly maintained.

That is why regulatory guidance such as ASHRAE 188, CMS guidance for healthcare facilities, and Joint Commission expectations all emphasize the importance of an active and continuously monitored Water Management Program (WMP).

Spring provides a natural checkpoint to ensure that program is functioning as intended.

A Spring Cleaning Checklist for Healthcare Water Systems

Below are several key areas facilities teams should review as part of a seasonal water system check.

1. Review Your Water Management Plan

Water Management Programs are not static documents. They should evolve as building conditions change.

A spring review should confirm:

• The water management team members are still current

• Control measures are clearly defined

• Monitoring locations are still accurate

• Corrective actions are documented and understood

Many facilities create a WMP once and rarely revisit it. However, an outdated plan can leave gaps in monitoring and risk management.

2. Evaluate Low-Use and Stagnant Outlets

Winter occupancy patterns can sometimes result in low-use outlets such as patient rooms, procedural areas, or sinks that are used infrequently.

Stagnation allows disinfectant levels to dissipate and temperatures to drift into ranges where microbial growth can occur.

Facilities should review:

• Low-use sinks and showers

• Ice machines and drinking fountains

• Storage or utility sinks

• Areas temporarily closed or under renovation

Ensuring proper flushing protocols are in place for these outlets can significantly reduce risk.

3. Verify Water Temperatures Throughout the System

Temperature control is one of the most important factors in preventing microbial growth in plumbing systems.

Spring system reviews should confirm that:

• Hot water temperatures are maintained within the facility’s control limits

• Recirculation loops are functioning properly

• Distal outlets maintain appropriate temperatures

• Temperatures do not drift into microbial growth ranges

Temperature checks at distal locations often provide a much clearer picture of system performance than measurements taken only in mechanical rooms.

4. Confirm Disinfectant Residual Levels

Municipal water enters buildings with a disinfectant residual, but that residual often decreases as water travels through complex plumbing systems.

Facilities should periodically verify:

• Free chlorine or total chlorine levels

• Oxidation-reduction potential (ORP) where applicable

• Stability of residuals across the distribution system

Maintaining adequate disinfectant levels helps limit the growth of biofilm and waterborne pathogens.

5. Inspect and Review Flushing Protocols

Flushing protocols are commonly used to manage low-use outlets and reduce stagnation.

However, flushing programs should be reviewed periodically to ensure they are:

• Based on the facility’s water chemistry

• Targeting the correct outlets

• Performed consistently

• Documented as part of the WMP

Flushing without understanding system conditions can sometimes provide only temporary improvement. A science-based approach produces much better long-term results.

6. Schedule Routine Water Testing

Water testing remains one of the most important tools for understanding what is happening inside a plumbing system.

Seasonal testing can help verify that control measures are working and identify potential risks before they become larger issues.

Facilities often test for:

• Legionella

• Heterotrophic plate count (HPC)

• Endotoxin levels in certain systems

Testing should ideally be performed at distal outlets, where water conditions reflect what patients and staff are actually exposed to.

Water Safety Is an Ongoing Process

Hospital plumbing systems are dynamic environments. Water chemistry changes, usage patterns shift, and microbial conditions can evolve over time.

That is why water management programs are designed to be continuous processes rather than one-time efforts.

A seasonal review helps facilities verify that the system remains under control and that monitoring and treatment strategies are functioning effectively.

Spring cleaning may traditionally focus on surfaces and equipment, but the water system deserves the same attention.

Ensuring the health of a building’s water infrastructure is one of the most important steps healthcare facilities can take to protect patients, staff, and visitors.

If your facility has not recently reviewed its water management program or conducted system testing, spring is an ideal time to do so.

Because when it comes to hospital water safety, guessing is never as effective as knowing.