Where the minerals come from
The City of Fullerton supplies a blend of local groundwater and imported water. Both carry dissolved calcium and magnesium, which is what people mean by hard water. You see it as white crust on faucets and glass shower doors, spots on dishes, and scale inside a kettle.
Inside the plumbing, the same minerals settle wherever water heats up, slows down or evaporates. That is why aerators, showerheads, toilet tank parts, faucet cartridges and water heaters show the effects first.
Where scale shows up and what it causes
| Part | Effect of scale | Simple care |
|---|---|---|
| Aerators and showerheads | Weak or uneven spray | Soak in vinegar and brush |
| Faucet cartridges | Stiff handles and drips | Replace worn cartridges |
| Toilet fill valves and flappers | Running or slow-filling toilets | Replace parts as they wear |
| Tank water heaters | Rumbling, lost capacity, extra energy use | Periodic flushing |
| Tankless water heaters | Reduced flow and error codes | Descaling as the maker recommends |
| Older galvanized pipe | Gradual narrowing over decades | Monitor pressure and leaks |
Water treatment options
Treatment is optional. It can reduce scale, but it adds equipment to maintain.
Water softener
- Removes hardness minerals from the water.
- Needs regular salt or media replacement.
- Discharge and installation rules can vary; check with the city.
- Often installed near the main line entry.
Scale control and routine maintenance
- Some systems aim to reduce scale formation without removing minerals.
- Results vary by system and household.
- Regular flushing and cleaning still matter.
- Lower upfront commitment.
A simple hard-water routine
- Clean faucet aerators and showerheads every few months.
- Flush the tank water heater on a schedule your plumber suggests.
- Replace toilet flappers and fill valves when they start to stick.
- Wipe down glass and fixtures to keep crust from building.
- Ask about descaling if you have a tankless water heater.
Questions to ask a plumber about hard water
- Is the scale in my water heater enough to affect its life?
- Would a softener make sense for this house, and where would it go?
- What upkeep does the treatment you recommend need?
- Are any of my fixtures worth replacing rather than cleaning?
Common questions
Is hard water unsafe?
Hardness itself is generally a nuisance rather than a health issue. For water-quality questions, contact the city's water utility.
Will a softener stop all plumbing problems?
No. It can reduce scale, but parts still wear and pipes still age. Routine maintenance still matters.
What drives the cost of treatment?
Type of system, installation location and plumbing changes, and ongoing maintenance needs.
General information for Sunny Hills, not a quote or professional advice. In an emergency, call 911.