Hotels spend considerable resources on the guest experience. They’ll put money into thread counts, lobby aesthetics, spa amenities, and dedicate meticulous attention to even the smallest detail to ensure guests feel comfortable, safe and catered to. And yet, despite all this care, water rarely makes the list, even though guests drink it, bathe in it, cook with it, and breathe it in through steam. For most properties, water quality is treated as a utility concern rather than a hospitality one, and that can create serious problems.
The Problem with What’s Coming Out of the Tap
Municipal water supplies in the United States are regulated, but regulation does not mean perfection. To come out of the tap, water must go from a treatment facility through aging infrastructure and into a hotel’s plumbing system carrying a wide range of contaminants along the way that most guests would not knowingly accept.
PFAS, or per- and polyfluoroalkyl substances, are the most common. Often called “forever chemicals,” PFAS do not break down in the environment or in the human body, and have been linked to a range of health concerns like weakening the immune system and even certain types of cancer. It has gotten so bad that the EPA identified PFAS as a national public health priority, and detectable levels show up in water systems across the country, including in cities with otherwise high-performing municipal treatment programs.
To combat these contaminants, many treatment programs will add chlorine and chloramines to municipal water as disinfectants, but they affect taste and odor in ways guests notice immediately. Heavy metals, including lead and copper, also leach from older pipe systems that many urban hotel properties still rely on. Microplastics have been detected in tap water across every continent. Sediment, bacteria, and scale-causing minerals round out a list that most hoteliers have never seen written out in full.
The point here is not to alarm you, only to acknowledge that water quality is variable, geography-dependent, and infrastructure-dependent, and a hotel that assumes its tap water is automatically guest-ready may be assuming incorrectly.
Filtration & Purification Are Not the Same Thing
Water filtration and water purification address different problems, and the best outcomes usually require both.
Filtration is a physical or chemical process that removes particulate matter, sediment, chlorine, heavy metals, and certain organic compounds from water. Its quality depends largely on the micron rating of the filter; a 0.2-micron filter captures bacteria and most microplastics, while a 20-micron filter, which is what many standard inline filters use, misses most of what threatens water quality at a health level.
Purification goes a step further. Ultraviolet purification, specifically UVC technology, uses short-wavelength light to disrupt the DNA of bacteria, viruses, and other microorganisms, rendering them unable to reproduce. UV purification does not remove particulate matter or chemical contaminants on its own, which is why pairing it with multi-stage filtration is the standard approach for properties that take water quality seriously. Reverse osmosis is another purification method, effective at removing dissolved solids, PFAS, and heavy metals, though it produces wastewater in the process and is better suited to point-of-use applications like kitchen or drinking stations than to whole-building deployment.
Whole-Building vs. Point-of-Use
A whole-building or point-of-entry system treats water as it enters the property, before it reaches any fixture or outlet. These systems typically address sediment, chlorine, and scale, and they protect the hotel’s plumbing infrastructure as well as the water quality at each outlet. For properties with hard water, you have whole-building softening which reduces scale buildup in pipes, water heaters, laundry equipment, and dishwashers, translating directly to lower maintenance costs and longer useful life.
Point-of-use systems, on the other hand, treat water at the specific location where it is consumed or used, so that includes kitchen stations, bar taps, ice machines, guestroom drinking water dispensers, showerheads and so on. These systems allow for higher filtration specificity because they do not need to handle the volume demands of whole-building flow rates. A point-of-use system at a restaurant tap or guestroom sink can incorporate multi-stage filtration and UV purification in a compact footprint, giving you cleaner water at exactly the moments guests interact with it.
The best possible system is to have both. Install a whole-building system for infrastructure protection and baseline water quality then pair it with point-of-use systems in high-guest-contact locations. Either way, you want to look for NSF certification, more specifically, NSF/ANSI 61, which certifies that a product’s materials do not leach contaminants into the water passing through them, which matters as much as the filtration performance itself.
Water Quality as a Hospitality & Marketing Asset
Guests who care about what they eat increasingly care about what they drink and how they bathe as well. It’s a natural extension that’s been gaining traction across several markets, including hospitality, which has seen an influx of wellness travelers, health-conscious families, and environmentally aware guests. Therefore, just saying a property uses “filtered water” is table stakes, while being able to affirm it is NSF-certified, uses a multi-stage filtration system with UV purification, and that guestrooms are equipped with point-of-use systems verified to remove PFAS and microplastics, is a different kind of claim entirely.
Hotels can surface this in pre-arrival communications, on in-room cards near the sink or shower, in F&B menus when the water program extends to the kitchen, and in sustainability reporting for corporate travel programs that track environmental and wellness metrics. Staff training matters too. Front desk teams and restaurant staff who can speak knowledgeably about the property’s water quality program do wonders to add credibility.
Water filtration is also great for integrating sustainability into a brand. A hotel that reduces or eliminates single-use plastic water bottles through a robust in-room filtration program removes significant plastic waste from its footprint. Some properties have turned this into a visible guest education campaign, communicating the volume of plastic avoided per stay.
The hospitality industry spends heavily to differentiate on experience and water is one of the most intimate and constant touchpoints a guest has with any property. Treating it as a quality standard, and communicating that standard clearly, is one of the more straightforward ways to deliver on a wellness and quality promise that guests are increasingly willing to pay for.
About the Author
Corbin Collet is President of Blu Technology, a veteran-owned mobile water filtration and purification company designed and assembled in Kalamazoo, Mich. Blu Technology develops NSF-certified water filtration and UVC purification systems for the RV, marine, hospitality, and outdoor adventure markets, with a mission to provide safer, cleaner water from any source. Learn more at goblutech.com.
