Hard Water and Your Drains

Hard water carries dissolved calcium and magnesium. When it evaporates or heats up, those minerals are left behind as scale. Southern California's imported and groundwater supplies are often on the hard side.

Scale forms most in hot water lines and fixtures. In drains, minerals combine with soap to form scum that coats pipe walls, especially in showers and tubs.

Soap scum is sticky, and hair caught in it builds clogs faster. Hard water makes bathroom drain clogs more common, which is why hair catchers matter so much here.

Galvanized steel pipes in older homes rust inside, and minerals add to the crust. Over decades the opening can shrink dramatically, slowing drains no matter how often they are cleared.

Scale can stiffen disposal parts and leave deposits in dishwasher drain hoses. Running the disposal with plenty of cold water and cleaning dishwasher filters helps.

Sediment builds in tank water heaters, reducing efficiency. Flushing the tank on the manufacturer's schedule keeps it working; it also means less sediment sent to the drain at once.

Softeners reduce scale but discharge brine. Some California areas restrict certain softener types. Check local rules and ask a plumber where the discharge should go.

For light scum, hot water and a brush help. For heavy buildup in a branch, a provider can clear it with a cable or jet. See hydro jetting.

Acidic or caustic drain cleaners can damage pipes and are dangerous to handle. Mechanical cleaning is safer for both the pipe and you.

Clean faucet aerators and showerheads by soaking them in vinegar. Clear fixtures help water flow evenly and reduce splashing that leaves scale behind.

Minerals can build up in the rim holes and siphon jet of a toilet, weakening its flush. A weak flush leaves more waste in the drain, which makes clogs more likely. Cleaning the rim holes helps.

Shower drains collect the most soap scum and hair. Clean the hair catcher weekly and pour hot water down the drain after cleaning.

If a drain stays slow after every clearing, the pipe opening may have narrowed with scale. A camera can show how much of the pipe is left.

Strong acids sold as descalers can damage pipes, finishes and septic systems. Use mild cleaners on fixtures and mechanical cleaning for drains.

Your water supplier publishes an annual water quality report that lists hardness. It is a useful reference when choosing a softener or cleaning schedule.

Dishwasher drain hoses and air gaps can collect scale and food. If the dishwasher leaves water in the bottom or the sink gurgles when it drains, clean the filter and check the hose.

Hard water combines with detergent to leave residue in washer drain hoses and standpipes. Using the right amount of detergent and a lint catcher helps.

Hard water will not go away, but its effect on drains is manageable with simple habits and the occasional professional cleaning.

If a drain stays slow despite cleaning, a provider can clear it and check whether scale has narrowed the pipe. Calls to (657) 354-1820 are answered 24 hours a day by independent local providers, who explain the likely cause and how the price is set before any work starts. You decide whether to go ahead, and there is no obligation to book.

Hard water is common here. A little regular care keeps it from becoming a plumbing problem.

Older homes with galvanized or cast iron pipe show the effects of hard water most, because rough metal holds scale. Newer homes with plastic drains see mostly soap scum, which is easier to clean. Either way, regular care keeps drains moving.

Water softeners reduce scale in supply lines and fixtures, which can mean less scum in drains. They do not replace hair catchers and good kitchen habits.

Check the hair catcher in each shower every week. In hard-water homes it fills faster, because soap scum binds hair into a mat that blocks the drain sooner than you might expect.

Hard water is a fact of life in much of Orange County. Hair catchers, regular cleaning and the occasional professional clearing keep it from turning into clogs.

Questions about hard water and your drains? Call (657) 354-1820 to reach a local Brea provider.