What hard water does to an older system

Hard water carries dissolved calcium and magnesium. When it is heated or slows down, some of those minerals come out as scale on pipe walls, in water heater tanks and inside faucets and showerheads.

In newer pipe, scale builds slowly. In old galvanized pipe that is already rough with rust, scale has more to cling to, and the two together narrow the opening faster.

Water heaters are especially affected. Sediment settles at the bottom of a tank, insulating the water from the burner and causing rumbling. Tankless units can lose efficiency as scale builds in the heat exchanger.

Signs of scale

Treatment approaches to discuss

Whole-house softening or conditioning

  • Treats water before it reaches pipes and the heater.
  • Needs space, a connection near the main and ongoing maintenance.
  • Does not reverse rust already in galvanized pipe.

Point-of-use and maintenance

  • Regular water heater flushing and aerator cleaning.
  • Filters at specific fixtures where needed.
  • Lower upfront scope; scale still forms elsewhere.

A simple maintenance rhythm

Every few months
Soak or clean aerators and showerheads that show crust.
Periodically
Flush the water heater as the manufacturer recommends.
With any plumbing visit
Ask the plumber to note scale at the heater and fixture connections.
Before replacing a heater
Ask how hard water affects the model you are considering.

Questions to ask a plumber

  1. Is this pressure problem scale, rust or both?
  2. How often should my water heater be flushed?
  3. Would a treatment system help, given how much galvanized pipe I still have?
  4. Where would a treatment system connect, and what maintenance does it need?

Common questions

Will softening water fix low pressure from old pipe?

It can slow new scale, but it does not remove rust and buildup already inside galvanized pipe. Replacement is often discussed when pipe is badly restricted.

Why is my showerhead clogged but the sink is fine?

Showerheads have small nozzles that clog with scale quickly. Cleaning or replacing the head often restores flow.

Where does Orange's water come from?

Local groundwater blended with imported water, supplied by the City of Orange water utility. The utility can tell you more about its sources.

General information for Old Towne Orange, not a quote or professional advice. In an emergency, call 911.