10 Plumbing Myths Chicago Homeowners Still Believe

Some of These You Learned From a Parent. Some From a Home Improvement Show. All Ten of Them Are Wrong, and a Few of Them Are Expensive.

 

Every plumber has a list like this in their head, the things people say with total confidence right before we explain why it’s not true. Most of these myths aren’t dumb, they’re just old advice that made sense once, or good marketing, or a shortcut that worked exactly one time and got remembered forever. Here are ten we hear constantly in Chicago and Chicagoland, and what’s actually true instead.

 

Myth #1: Flushable Wipes Are Actually Flushable

 

The package says flushable. The pipe disagrees, loudly, usually around 2 a.m. Wipes don’t break down in water the way toilet paper does, and the fact that they clear your own toilet trap doesn’t mean the problem is solved, it just means it’s now somebody else’s problem further down the line. They catch at root intrusion points, at bends in older cast iron, at partial restrictions in aging clay tile, and they build on themselves flush after flush. A household using flushable wipes regularly in a Chicago home with original mid-century plumbing is quietly constructing a blockage one flush at a time. Our guide to why your toilet keeps clogging covers this exact pattern, and it’s the single most common cause we see.

 

Myth #2: Eggshells Sharpen Your Garbage Disposal

 

This one’s been passed down like a family recipe, and it’s just not true. Eggshells don’t sharpen anything, disposal blades aren’t actually blades, they’re blunt impellers, and the shell membrane can wrap around the mechanism instead of grinding cleanly. Grease, coffee grounds, pasta, rice, and fibrous vegetables like celery cause just as much trouble as anything you’d assume is the obvious culprit. Our complete guide to Chicago kitchen plumbing runs through what actually belongs in the trash instead of the sink.

 

Myth #3: A Little Grease Is Fine if You Run Hot Water After

 

This is one of the most confidently repeated myths in plumbing, and it’s backward. Hot water keeps grease liquid long enough to travel further down your pipe before it cools and solidifies, which means instead of a clog you can reach near the sink, you get one much deeper in the line where it’s harder to find and clear. The grease doesn’t disappear because it went down warm. It just picks a worse spot to settle.

 

Myth #4: If Your Drains Are Flowing, Your Sewer Line Must Be Fine

 

A sewer line can have root intrusion, offset joints, or a partially collapsed section for years before a homeowner notices anything at all, since water still finds a way through until the damage becomes severe enough to actually block flow. By the time drains are visibly slow, the underlying problem is usually well established, not brand new. A working drain tells you the water got through today. It tells you nothing about whether it’ll get through next month. The only way to actually know your sewer line’s condition is a sewer camera inspection, not how well your shower is currently draining.

 

Myth #5: A Running Toilet Is Just a Minor Annoyance

 

That faint hissing sound is money, not white noise. A toilet that runs continuously can waste hundreds of gallons a day, and depending on your water rate, that can add up to real dollars on a monthly bill before anyone thinks to trace it back to the bathroom. It’s almost always a worn flapper valve, which is about as close to a five-minute fix as plumbing gets. Our toilet repair services handle it in one visit, usually for less than what the toilet will waste in water over the next month if it’s left alone.

 

Myth #6: Chemical Drain Cleaner Does Basically What a Plumber Would Do

 

Chemical drain cleaner dissolves the soft leading edge of a clog just enough to restore flow temporarily, and that quick win is exactly why the myth survives. It doesn’t reach deposits embedded in a decades-old pipe wall, it doesn’t address root intrusion, and repeated use accelerates the corrosion that makes the underlying problem worse over time. It’s treating the symptom while quietly making the actual disease harder to cure, and by the time it stops working entirely, the pipe has usually taken damage a plumber now has to work around.

 

Myth #7: A Water Heater Is Fine as Long as It’s Not Leaking

 

Waiting for a visible leak means waiting for the tank to already be failing, since by the time water is actually escaping, internal corrosion has usually been progressing for a while. Most residential water heaters have a realistic service life of eight to twelve years, and age, sediment buildup, and inconsistent temperature are all warning signs that show up well before a leak does. “It’s not leaking” is a low bar for a fixture that can flood a basement in a single afternoon when it finally fails, and by then it’s not a maintenance decision anymore, it’s an emergency call. Our water heater replacement team can tell you honestly whether yours is on borrowed time before it makes that decision for you.

 

Myth #8: Lead Pipes Are a Flint, Michigan Problem, Not a Chicago One

 

Chicago actually has more lead service lines than almost any other city in the country, a legacy of a decades-old municipal code that once required lead specifically, long after other cities had moved away from it. This isn’t a distant news story about somewhere else. It’s a real, documented condition in a significant share of Chicago and Chicagoland homes built before the 1980s, and the only way to know if yours is one of them is to check.

 

Myth #9: A Water Softener Protects You From Everything in Your Tap Water

 

A softener is built to remove calcium and magnesium, the minerals behind hard water, using a process that isn’t designed for and doesn’t meaningfully reduce chemical contaminants like PFAS, the “forever chemicals” making national headlines. Softening and filtration solve two genuinely different problems, and having one doesn’t mean the other is covered. Our guide to PFAS in Chicago tap water breaks down exactly what a softener does and doesn’t catch, and what actually does.

 

Myth #10: Calling Before You Dig Only Matters for Big Excavation Jobs

 

Illinois law doesn’t have a size exemption. Installing a mailbox post, a fence, or a garden bed technically requires the same free call to JULIE that a full sewer line excavation does, and skipping it on a “small” project is exactly how someone ends up striking a gas line six inches down that nobody knew was there. Our guide to why your Chicago plumber should always call JULIE first covers what’s actually required, and it applies to homeowners doing their own digging too.

 

Why These Myths Stick Around

 

Most of these aren’t laziness or ignorance, they’re advice that felt true because the consequence didn’t show up immediately. Grease looks fine going down the drain today. A running toilet doesn’t flood anything this week. A water heater that isn’t leaking seems perfectly healthy. Plumbing problems are almost always slow before they’re sudden, which is exactly why the myths that downplay them survive generation after generation. The fix for most of them isn’t complicated. It’s just knowing which ten-second decisions are quietly setting up next year’s expensive one.

 

Frequently Asked Questions

 

Are “flushable” wipes ever actually safe to flush?

Not in any meaningful sense for residential plumbing. They may pass through your own toilet without an immediate clog, but they don’t break down the way toilet paper does, and they accumulate downstream where they catch on root intrusion and pipe joints, building toward a blockage over time.

 

How much money can a running toilet actually waste?

A continuously running toilet can waste hundreds of gallons a day depending on the severity of the leak, which adds up on a water bill fast. It’s usually caused by a worn flapper valve, an inexpensive and quick fix once it’s identified.

 

Does a water softener remove lead or PFAS from tap water?

No. A standard softener is designed specifically for calcium and magnesium, the minerals behind hard water, and doesn’t meaningfully address lead or PFAS, both of which require different treatment approaches entirely.

 

Is it really necessary to call JULIE for a small digging project?

Yes. Illinois law requires anyone digging, regardless of project size, to call at least 48 hours in advance. There’s no exemption for small residential projects like fence posts or garden beds.

 

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