When a commercial building or industrial facility’s plumbing, storage tanks or cooling towers are mismanaged, the water system itself becomes a vector for illness and liability. For owners, property managers and building operators, understanding the hidden hazards in a building’s water system is critical to occupant safety and, consequently, the long-term value of assets.
In this article, we explain how a building’s water system can make people sick as well as what you can do to remediate (or better yet, prevent) these issues.
Opportunistic Pathogens in Plumbing Systems
Water systems can harbour microbes such as Legionella that thrive in warm, stagnant piping, storage tanks or cooling towers. When aerosolized via showers, misting systems and even HVAC coils, these pathogens pose a serious health risk.
In Canada, water-system safety is guided by federal and provincial public-health requirements, along with best-practice documents such as ASHRAE Standard 188 and Guideline 12. These resources support the development of site-specific water-management programs designed to control microbial growth in commercial and institutional facilities.
Chemical and Material-Related Contaminants
Aside from microbes, water carried through a building can be contaminated by materials and chemicals. For example, corroding pipes may leach lead or copper, disinfectant residuals may fall below targets, and biofilm can protect pathogens until released. Even if municipal supply is safe, premise plumbing introduces its own risks through temperature fluctuations, dead-legs, low disinfectant or scale issues.
Lead
Exposure to lead, a highly toxic substance, can lead to a wide range of adverse health effects in adults and most commonly in children.
Drinking water may become contaminated through leaching of lead from lead distribution lines and lead soldering in piping joints. Lead distribution lines are particularly common in buildings constructed prior to 1950.
Stagnation, Reduced Flow & Inactive Systems
One of the biggest hazards arises when buildings reduce occupancy, shut down floors or systems, or operate inefficiently. As a result, water age increases, disinfectant residual drops, temperature control fails, and pathogen risk spikes.
Facility owners must factor in these latent risks during design, commissioning and ongoing operations.
Liability, Health & Asset-Value Impacts
For stakeholders, unmanaged water-system risks create exposure far beyond day-to-day operations. A single waterborne incident can trigger tenant health complaints, workplace investigations, and reputational damage, especially in sectors with heightened duty-of-care expectations such as healthcare, long-term care, hospitality, and multi-tenant workplaces.
From a compliance perspective, facilities may face scrutiny from public-health authorities, regulators, insurers, and municipal code officials if water system failures contribute to microbial growth, chemical contamination, or unsafe operating conditions. That’s why it’s imperative to get ahead of building issues before they cause real harm.
What You Can Do About Water Management
Enlist building-condition assessment expertise to gain a clear roadmap for water-system management. At Nichols Environmental + Engineering, we inspect plumbing networks, storage tanks, fixture flow, and dormant zones, then provide actionable documentation, cost forecasts and maintenance plans.
With this proactive service in Western Canada, you’ll mitigate health risks and protect your asset’s value.
Protect Your Building’s Water System Today
If you manage commercial or industrial real estate and want to ensure your water systems aren’t silent liabilities, contact us for a comprehensive building assessment. We’re the experts you need for all types of occupational hygiene risks.
