The 10 Most Common Plumbing Problems in Twin Cities Homes

The most common plumbing problems in Twin Cities homes cluster around three causes: very hard water (13-22 gpg) damaging fixtures and appliances over time, freeze damage from Minnesota winters, and aging supply lines in homes built before 1980. The fixes are well-understood. the key is catching problems before they cause water damage.

1. Hard water scale on faucets, showerheads, and dishwasher

The most common Twin Cities plumbing complaint. White crust on faucets, soap scum on shower walls, dishwasher streaks. Cause: 14+ gpg hardness running through your home untreated.

Fix: Properly sized water softener. See our water softener installation page for what to look for.

2. Running toilet

Toilets that run intermittently or constantly. Usually a worn flapper or fill valve. A toilet that runs 24/7 wastes thousands of gallons of water per year.

Fix: Replace flapper and fill valve. $50 in parts, 20 minutes of work. Worth doing yourself or having done at the same time as another service call.

3. Slow or clogged drains

See our clogged drain guide for a full breakdown. Common Twin Cities causes: grease buildup in kitchen drains, hair in bathroom drains, hard water scale narrowing pipes over years.

Fix: Mechanical clearing (cable auger or hand snake). Avoid chemical drain cleaners.

4. Water heater approaching end of life

Most tank water heaters in the Twin Cities last 8-12 years before failing. Hard water shortens that significantly without proper maintenance. Common signs: rusty hot water, longer recovery time, popping or rumbling from the tank.

Fix: Annual flushing extends life. Once you see warning signs, plan replacement before it fails in your basement.

5. Frozen or burst pipes (winter)

A Twin Cities winter staple. Pipes in unheated garages, crawl spaces, exterior walls, and outdoor hose bibs are vulnerable.

Fix: Preventive insulation in fall, frost-free hose bib installation, knowing where your main shut-off is.

6. Leaking pipe joints

Older copper joints fail at solder points. Galvanized steel rusts from the inside. PEX is generally durable but fittings can fail.

Fix: Spot repair if isolated, repiping if widespread. Aging galvanized lines in homes built before 1960 should be planned for replacement.

7. Low water pressure throughout the home

Could be municipal supply issue, mineral buildup narrowing pipes, partially closed main shut-off, failed pressure reducing valve, or for well users, pump failure.

Fix: Diagnose first. We test pressure at the main and downstream of any softener or filter.

8. Sump pump failure

Twin Cities homes with basements often rely on a sump pump. Common failures: motor burns out, float gets stuck, primary pump fails during a power outage when you need it most.

Fix: Test annually before spring rains. Consider a battery backup pump. Replace pumps over 10 years old before failure.

9. Failing garbage disposal

Hard water and grease damage disposal blades over time. A jammed or leaking disposal is a common Twin Cities call.

Fix: Replace if over 10 years old or visibly leaking. Repair is rarely cost-effective on these.

10. Sewer line back-up from tree roots

In older Twin Cities neighborhoods with mature trees, tree roots find cracks in clay or cast-iron sewer lines. Spring backups are common.

Fix: Hydro jetting to clear roots, in-line camera to diagnose extent, sometimes line replacement.

The pattern

Notice that many of these problems are accelerated by hard water and Minnesota winters. That is why we say every Twin Cities home needs at least:

1. A properly sized water softener
2. An annual plumbing maintenance check
3. Pipes insulated in unheated spaces before winter
4. Knowledge of where the main water shut-off is

For everything else, call 651-738-0580. Free in-home water test at every appointment.

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