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The Pool Envy® Podcast goes beyond surface-level swimming pool advice to examine the standards, systems, evidence, and professional judgment behind pool construction, safety, operation, and failure.
Hosted by Jason Davies, a licensed swimming pool contractor and independent consultant, the show explores pool code compliance, construction defects, inspections, workmanship, water chemistry, equipment, litigation consulting, and expert-witness issues through real-world observations and practical explanations.
Created for pool professionals, homeowners, property owners, attorneys, and anyone who wants to understand not only what happens in a swimming pool—but why—each episode helps listeners ask better questions, recognize meaningful evidence, and distinguish confidence from informed judgment.
Pool Envy® — Standards, not suggestions.
From the job site to the code book, this is a Pool Envy Podcast where licensed pool professionals speak up. Code, compliance, craftsmanship. Hosted by Jason Davies. Licensed across Wisconsin, Florida, and Texas. Your deep end starts now.
Jason Davies:Some pools have equipment rooms where you can tell there are problems before you even step inside. Can you smell exactly what I'm talking about right now? Good. Then when you walk in or run away for that matter and have the meeting somewhere else, screw heads are rusting, steel brackets deteriorating, copper is discolored, It's green and gross. Brass, the same thing.
Jason Davies:Heater cabinets look older than they should. Electrical components are showing corrosion. Motors, shelves, conduit, and fasteners all seem to be aging faster than the equipment outside the room. Sometimes even the ventilation equipment is corroding. When I see that, one of the questions that goes through my mind is pretty simple.
Jason Davies:Where are the pool chemicals stored? Pool chemicals do not have to be spilled directly onto a piece of equipment to become part of an equipment problem. The CDC's Model Aquatic Health Code discusses that specifically. Its explanatory materials recommend where possible storing pool equipment in dedicated chemical storage spaces instead of putting them in the filter or equipment room. It identifies fumes from halogen based sanitizers and muriatic acid as corrosive, particularly to copper wiring, electronics, pool heaters, and pump motors.
Jason Davies:The model aquatic health code is guidance and isn't automatically law everywhere. Local requirements vary. But the reason behind the recommendation is pretty easy to understand. Your expensive pool equipment shouldn't have to spend its entire life sharing the atmosphere of the chemical storage area. That brings us to ventilation.
Jason Davies:I've walked into equipment rooms where the apparent solution was basically a household box fan stuck to an opening cut through the wall with some brackets that were notoriously rusting. The fan was turning. In one room, I photographed the fan itself and it was substantially corroded. That doesn't tell me the measured airflow. It doesn't tell me the pressure relationship in the room, exactly what that fan had been exposed to, or how the air was actually moving.
Jason Davies:But a spinning fan doesn't prove the room is properly ventilated. Ventilation is more than moving air somewhere. You have to consider what contaminant you're trying to remove, where it may accumulate, and where replacement air comes from, where the exhaust goes, whether contaminated air can migrate into another part of the building, and whether the equipment being used is appropriate for that environment. Current swimming pool code gives us a great example of how deliberately chemical room ventilation can be treated The 2024 International Swimming Pool and Spa Code contains requirements for continuously operated ventilation in certain interior chemical storage spaces, directs air movement towards the chemical space and requires dedicated exhaust arrangements. It also addresses separation of chemical storage air from spaces containing electrical combustion and air handling equipment.
Jason Davies:The exact requirements depend on what code has been adopted and where the pool is located and on the configuration of the facility. The concept is considerably more deliberate than hanging a fan on a wall and hoping for the best. Chlorine gas is considerably heavier than air. OSHA lists chlorine OSHA lists chlorine with a vapor density of 2.47 relative to air, and n I o s h describes gaseous chlorine as roughly two and a half times as heavy as air. Without adequate air movement, leaking chlorine can accumulate in lower areas.
Jason Davies:There is an important distinction here. A container of liquid pool chlorine, sodium hypochlorite solution sitting in a room is not the same thing as a cylinder releasing elemental chlorine gas. We shouldn't describe them as though they are. Chlorine gas can be produced during certain chemical reactions including the dangerous combination of hypochlorite products and acid, and it can be involved in other chemical incidents. The larger point is that contaminants don't necessarily travel through a room in a way somebody assumes they will.
Jason Davies:Fan location alone doesn't tell you where the contaminated air is actually going to go. Operator practices matter too. I've personally walked into an equipment room and found liquid chlorine sitting uncovered in an open five gallon bucket. I'm not going to identify the facility. The important part is the practice.
Jason Davies:Proper ventilation isn't an excuse to leave pool chemicals open. CDC guidance recommends storing chemicals in their original manufacturer labeled containers. Chemical handling guidance also calls for controlling dust, fumes, and splashes, opening one product container at a time and closing it before moving on to another. Containment and ventilation work together. You don't deliberately expose the room to more chemical and then expect the exhaust system to make up for poor storage practices.
Jason Davies:The little one pound bags of pool shock deserve some attention too. They're easy to put on a shelf and forget about. Bags can become damaged. Product can escape. Moisture can get involved.
Jason Davies:Occasionally, you may encounter a package that's swollen, wet, hot, leaking, or otherwise doesn't look normal. That isn't the package I would squeeze to see what's going on. Calcium hypochlorite product labeling warns that material needs to remain dry and properly stored. Moisture or contamination can initiate decomposition, generating heat, and hazardous gases, and under some circumstances lead to fire or explosion. Some EPA approved labeling for bagged calcium hypochlorite specifically directs users to keep the product dry in its original unopened bag until use.
Jason Davies:If a chlorine product package is swollen, wet, hot, damaged, leaking, or behaving abnormally, then that's the time to stop handling it casually and follow the product label, manufacturer guidance, and appropriate emergency procedures. None of this stops at the commercial pool equipment room. Think about where people keep pool chemicals at home, in the garage, an outdoor shed, a pump house, an outbuilding, the basement. Now look around that space and forget about the swimming pool for a moment. What else is sharing that air?
Jason Davies:Maybe there's a car in the garage, steel shelving, bicycles, hand tools, a tool chest, electrical equipment, a drill press, a table saw, a welder. Maybe there's a big milling machine with a beautiful cast iron table that you'd really prefer not to turn orange. Put corrosive chemicals into that same enclosed environment and suddenly we're talking about more than pool equipment. Pool chemicals don't care whether the metal in the room belongs to the pool. Basements deserve better particular thought.
Jason Davies:A basement may seem like an attractive storage location. It's indoors. It's protected from rain. It may stay reasonably cool. It may also contain your electrical service panel, copper conductors, junction boxes, furnace controls, water heater components, sump equipment, tools, and shelving.
Jason Davies:If you're creating a corrosive environment down there, all of those components are sharing it. The same thought applies to an unfinished garage. Look up. Wood roof trusses commonly use metal connector plates, and many of those plates are made from galvanized steel. Galvanizing provides corrosion protection, but we're still talking about metal structure connections that I wouldn't intentionally expose to an unnecessary corrosive environment.
Jason Davies:That doesn't mean a little discoloration on a connector plate proved structural failure. It doesn't. It means we should quit looking at chemical storage as though the only question is whether the bucket itself is safe. The surrounding building matters too. Chemical storage history can also be useful when you're troubleshooting unexplained deterioration.
Jason Davies:If a room shows unusual corrosion, ask whether pool chemicals were ever stored there. That does not establish causation. Humidity, condensation, water intrusion, salts, and other environmental conditions can cause corrosion too. Chemical storage history belongs in the investigation. Even if the buckets aren't there anymore, knowing what was previously stored in that space may help explain deterioration that otherwise doesn't make much sense.
Jason Davies:That's probably the biggest takeaway from this episode. When you're choosing a place for pool chemicals, don't look only at the shelf where you're putting the bucket. Look at the room. Look at the equipment. Look at the wiring.
Jason Davies:Look at all the tools. Look at the building components. Think about what happens if a package leaks, somebody leaves a container open, or the storage practice isn't quite as good six months from now as it was the day everything was organized. Keep chemicals in their appropriate original containers. Keep incompatible chemicals separated.
Jason Davies:Keep them dry and protected according to their labels. Also, please stop using empty pool chemical buckets to store parking lot salt. And where chemical storage ventilation is required, treat it like an actual ventilation system, not just a fan somebody happened to find in the garage. A fan spinning on the wall does not prove the problem has been solved, and a box fan propped up against the wall may just become the next piece of equipment in the room that gets destroyed. Ventilation isn't where you put the fan, it's where the air goes.
Jason Davies:And when you're looking at mystery corrosion, remember one more question. What has been sharing this air? And remember, you're breathing it too. Keep your fans close and your ventilation closer.
Spyder:This podcast is for educational and informational purposes only. It is not legal advice, and it is not site specific engineering, code, or safety determination. All field conditions should be evaluated in context. Thanks for listening to the Pool Envy Podcast, where licensed pool professionals speak up. Hosted by Jason Davies, licensed across Wisconsin, Florida, and Texas.
Spyder:For more insights, subscribe and join us next time.