Episode Description
A single line on a label can shake an entire trade, especially when that trade has been using the product for 30 plus years. We pick back up with Scott Hamilton, the CEO of United Chemical, to sort out what the EPA’s “not for use in outdoor pools” language is really responding to, and whether the bromate concern is being evaluated in a way that matches real pool conditions.
We get into the chemistry behind bromate exposure, including why some researchers argue it should not be assessed with a strictly linear model. Scott explains the case for looking at thresholds and real-world dose, plus the research showing how stomach acid can reduce a large portion of trace bromate back into bromide. We also talk about what makes the EPA process move slowly: protocol review, data acceptance, and the very real staffing and workload constraints that can turn a decision into a multi-year timeline.
Then we zoom out to the business and legal side of pool chemical regulation. Why do some products stop claiming they “kill algae” even when pros swear they work? Because pesticidal claims trigger registrations, state-by-state fees, and a compliance burden that can be brutal. We also address the fear factor directly, how to think about risk tolerance, and why transparency matters when the manufacturer has a stake in the outcome. If you want to judge the study for yourself, we point you to the download link.
Subscribe for more pool industry deep dives, share this with a tech who’s debating sodium bromide, and leave a review with your take: should outdoor pool labeling follow worst-case assumptions or field-relevant data?
We keep talking with Scott Hamilton about the EPA’s interim stance on sodium bromide labels and what the latest bromate data actually says about real-world risk. We weigh the science, the legal reality of pesticidal claims, and why transparency matters when pool pros have relied on a product for decades.
• how bromate exposure is being modeled and why linear risk assumptions may not fit real pool use
• what research says about stomach acid reducing trace bromate back to bromide
• how the EPA makes interim decisions and what it would take to revisit or reverse them
• why some manufacturers remove algae-kill claims and how registration fees shape labels
• how to think about risk tolerance alongside other common pool industry hazards
• why publishing methods and raw data helps the industry move past rumors
If you'd like to see a copy of the study, there's going to be a link in this podcast description for you.
You can download that study and read it for yourself.
If you're looking for part one, again go to my website, swimmingprolearning.com, click on the podcast icon, and open a drop-down menu of other podcasts that I've done before.
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Download the full Sodium Bromide Study:
https://drive.google.com/file/d/1X6-1uJJ7MZugeRDpch0tpop2vg0hjPR0/view?usp=sharing
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