Holmes on Homes Podcast with Mike Holmes: Season 6 – Episode 1
The Hidden Dangers of Water Quality in Plumbing
On this episode of the Holmes on Homes Podcast, Mike Holmes tackles one of the biggest – and most overlooked – threats to your home: plumbing. And according to Mike, the number one problem? Water.
Joined by plumbing experts Aureilo Malavenda and Naji Mejalli from Precise Plumbing, the conversation dives deep into hard water damage, failing sump pumps, storm drain backups, sewer line issues, and why massive rainfall is leading to more flooded basements than ever before. They break down the risks of outdated clay pipes, lead water services, improper toilet selection, grease-clogged drains, and so-called “flushable” wipes that cause costly blockages.
Mike also shares why homeowners must test their water quality, maintain tankless water heaters, scope drains with cameras, and always hire licensed plumbers. From radon gas and stack effect to dual dwellings and water service upgrades, this episode is packed with practical advice that could save you thousands in repairs.
If you care about protecting your home, avoiding insurance nightmares, and making it right the first time, this is an episode you don’t want to miss.
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Behind The Scenes Photos
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Ask Mike Holmes
Mike and his expert industry guests answer some of the most commonly asked questions.
1. What is the number one problem with plumbing?
Water. From stormwater flooding to hard water damage, water itself causes the most plumbing issues. Contaminants, hardness, and poor drainage can damage pipes, fixtures, and appliances over time.
2. Is city tap water always safe?
City water is treated to be bacteria-free, but it can still contain contaminants, chlorine, and minerals. Just because it looks clear doesn’t mean it’s ideal for drinking or your plumbing system.
3. How does hard water damage a home?
Hard water causes mineral buildup (calcium, iron, TDS) inside pipes, hot water heaters, faucets, and appliances. Over time, this reduces efficiency, clogs components, and shortens equipment lifespan.
4. Should homeowners test their water?
Yes. Water testing is simple and inexpensive. You can bring a sample to the city, a lab, or even a pool supply store. Most homes in Ontario and across Canada have hard water and need treatment.
5. Why are sump pumps so important today?
With increased rainfall and aging infrastructure, storm systems can back up. Sump pumps help redirect excess groundwater away from foundations, reducing basement flooding risk.
6. What’s wrong with connecting storm drains to sanitary lines?
Older homes often had combined systems. During heavy rainfall, these systems can become overwhelmed, causing sewage backups and basement flooding.
7. Why is a camera inspection critical?
A drain camera identifies collapsed clay pipes, root intrusion, blockages, and improper connections. Without scoping the drain, plumbers are guessing — and that can lead to costly mistakes.
8. What should never go down a drain?
Grease is the number one drain killer. It builds up over time and restricts flow. Baby wipes, hygiene products, and diapers should also never be flushed — even if labeled “flushable.”
9. Why are lead water lines dangerous?
Older homes may still have lead service lines, especially in areas like Toronto. Lead exposure is harmful, and many cities are replacing lines up to the property line — but homeowners are responsible for the portion inside their property.
10. Why hire a licensed plumber?
Licensed plumbers stay current with changing codes, use proper tools like drain cameras, pull permits, and stand behind their work. Cutting corners can lead to major repairs, insurance issues, and safety risks.
Looking for More Expert Tips and Advice?
Check out Mike’s Advice and Holmes on Homes Podcast Blog.
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About the Holmes on Homes Podcast with Mike Holmes
The Holmes on Homes Podcast, hosted by Mike Holmes, seasoned professional contractor and TV host, is your go-to source for expert insights on home improvement, safety, maintenance, skilled trades, and industry innovation. Each episode features expert guests and valuable takeaways, covering everything from choosing the right materials, aging in place, and electrical safety to the future of construction with 3D printing, pondscaping, and even raising healthy pets in a healthy home.
Whether it’s renovating for accessibility, improving indoor air quality, or tackling the skilled trades stigma, Mike and his guests break it all down with real talk, hard truths, and the no-nonsense advice that’s made him a trusted name in home improvement. Because when it comes to building better, it pays to Make It Right.
With over 40 years of experience, Mike provides practical advice and industry best practices, empowering homeowners to make informed decisions. Whether you’re a first-time homeowner, professional contractor, or planning a major renovation, this podcast is your go-to source for everything home-related.
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