If the shower in your Washington home has slowed to a thin spray while the kitchen tap still runs strong, the cause is often mineral buildup at the showerhead. Local water reports describe Washington's tap water as very hard, and hard water leaves a crust wherever it dries. That crust collects in the small outlet holes that shape the spray, and over time it narrows them until the flow drops.
Start with the pattern
Before you take anything apart, notice which fixtures are weak. The pattern points you to the likely location.
- Only the shower is weak. Start with the showerhead, then check the flex hose and the shower valve.
- The shower and a sink are both weak. Check whether the whole house is affected, including the hose bib outside, and look at the main shutoff and any pressure regulator.
- Only the hot water side is weak. Check the hot side fittings and the water heater inlet, since sediment or a partly closed valve can slow hot water alone.
- A single sink is weak. The problem is likely that faucet's aerator, which is a separate and simpler check.
Check the showerhead first
Most weak showers in Washington start here. Unscrew the head by hand, or with a cloth wrapped around it if it is tight. Look at the face of the head. White or gray crust around the holes is mineral scale. Orange or rust-colored flecks point to iron, which local reports mention and which can also appear in some Franklin County private wells.
To clean the head, soak it in white vinegar until the crust softens, which may take several hours. Then rinse it and work a soft brush through each hole. Do not use a pin or wire that could scratch the outlet surface or enlarge the holes. Once the holes are clear, run the water for a moment with the head off to flush any loose material, then reattach it.
Some heads contain a small rubber or plastic flow disk or restrictor. If you can see one, check whether it is clogged or has shifted. Only remove it if the head's design allows that, and never drill or enlarge the openings to improve pressure.
Look at the flex hose and the connection
If the head is clear, check the hose between the wall and the head. A kink, a crushed section, or a tight bend can cut flow sharply. Also check the rubber washer inside the connection at the wall pipe. A worn or flattened washer can leak or restrict the flow path, so replace it if it looks misshapen.
Check the shower valve if the rest is clear
If the showerhead and hose are clean and the problem remains, the shower valve may hold debris or scale. Valve cartridges in mixing valves can collect sediment, and that restricts flow on the shower outlet only. Opening the valve involves shutting off water at the house shutoff, not just a local valve, and it is work many homeowners hand to a licensed plumber. If you go that route, describe the pattern you noticed so the plumber can check the right part first.
When the water itself is the cause
If scale comes back quickly after cleaning, the water hardness is the underlying issue. That is a question for testing, not for more cleaning. A certified lab can test hardness and iron, and your local water report gives a starting point for the municipal supply.
If your home uses a private well, the situation is different. Wells are unregulated, so nobody tests the water except you. Shallow wells near the Missouri River bottoms can carry more iron and sediment than city water, and sediment can clog outlets just as scale does. Testing the well water, and checking whether the clogging material is sediment, iron, or scale, tells you which problem you are dealing with before you decide on any equipment.
What to do next
- Note which fixtures are weak and whether the problem is one shower or the whole house.
- Remove the showerhead, check the face and holes, and soak it in white vinegar until the crust loosens.
- Check the hose for kinks and the connection washer for wear.
- If the flow is still weak, check the shower valve or call a plumber with a clear description of the pattern.
- If scale returns quickly, test the water for hardness and iron before choosing any treatment.
Cleaning the showerhead restores flow in many Washington homes, but it is maintenance, not a fix for hard water. Once the shower is clear, decide on treatment only after you know what the water actually contains.