5 Plumbing Problems You Can Probably Fix Before Calling a Plumber

A practical guide for Harare homeowners who'd rather spend ten minutes with a wrench than wait in for a callout.

Not every leak needs a professional. A lot of the plumbing issues that show up in Harare homes — a toilet that won't stop running, a tap that drips all night, a drain that's slowed to a trickle — come down to one worn part or one blocked pipe. Fix that, and the problem's gone.

Here are five you can genuinely take on yourself, and how to tell when it's time to stop and call someone instead.

1. The toilet that keeps running

That sound you hear twenty minutes after every flush is almost always the flapper valve — the rubber seal at the bottom of the cistern that's supposed to drop back into place and stop water flowing into the bowl. Over time it warps, cracks, or just stops sealing properly.

Lift the cistern lid and watch what happens after a flush. If the flapper isn't sitting flat, or there's a visible gap, that's your answer. Flapper valves are cheap, they're sized to fit most standard cisterns, and swapping one out takes about as long as making a cup of tea. While you're in there, check the float arm too — if it's set too high, water keeps overflowing into the overflow tube, which can look like the same problem but needs a different fix: just bend the arm down slightly or adjust the float height.

2. The tap that drips no matter how hard you turn it

A dripping tap is almost never about how hard you close it — it's a worn washer or O-ring inside the tap body that's no longer sealing against the valve seat. Cranking it harder just wears the washer out faster and can damage the seat underneath, which turns a small fix into a more expensive one.

Turn off the water supply to that tap, take the handle apart — usually one screw under a cap on top — and look at the washer at the base of the spindle. If it's flattened, cracked, or has a groove worn into it, replace it. Bring the old one with you when you're shopping for a new one; washers aren't universal, and matching the size on the spot saves a second trip.

3. A drain that's draining slower every week

Slow drains build up gradually, which is exactly why people ignore them until they stop completely. Hair, soap residue, and grease cling to the inside of the pipe and narrow the space water has to move through.

Before reaching for chemical drain cleaner — which can damage older pipes with repeated use — try a drain snake or even a straightened wire coat hanger with a small hook bent into the end. For sink drains, the P-trap underneath is usually the culprit and it's simple to unscrew, empty out, and rinse. Keep a bucket underneath before you start; that bend holds more standing water than people expect.

4. Low pressure from a single showerhead or tap

If it's just one fixture running weak while the rest of the house is fine, the fixture itself is almost always to blame, not your water supply. Mineral buildup clogs the tiny holes in a showerhead or the mesh screen — the aerator — at the tip of a tap.

Unscrew the showerhead or aerator and soak it in a vinegar solution for a few hours; it dissolves mineral deposits without any scrubbing. If it's caked on, an old toothbrush handles the rest. This alone fixes a surprising number of “my water pressure is bad” complaints.

5. A pipe joint that's weeping rather than actively leaking

A joint that's damp or dripping slowly, rather than spraying, is often a loose connection or worn seal rather than a cracked pipe. Compression fittings can work themselves loose over time, especially with hot water pipes that expand and contract.

Tighten the fitting gently — a quarter turn is usually enough, and overtightening compression fittings can crack them. If it's still weeping after that, the seal or olive — the small ring inside a compression fitting — probably needs replacing, and it's worth wrapping the threads with plumber's tape before you put it back together.

Getting the right part the first time

Most of these fixes fail not because the job was too hard, but because the replacement part was slightly the wrong size or type. That's really the whole reason our plumbing counter exists — bring in the old washer, flapper, or fitting, and we'll match it rather than send you home guessing. Basic Blocks Hardware carries the pipes, fittings, taps, and tools for all five of these fixes at our Whitehouse, Candy Shop (Southlea Park), and Msasa branches, and someone on the floor can usually tell you which part you need before you've finished describing the drip.