Water Softener in Annandale, VA

Local conditions in Annandale

Annandale grew quickly after World War II, and its median home was built around 1968. Many houses still have original-era plumbing near the main: older gate valves, a mix of copper and galvanized pipe, and utility rooms laid out before anyone planned for a softener. That doesn't rule one out, but it shapes the install. A plumber will often replace the main shutoff and any corroded fittings at the same time, because those are the parts that fail once water is shut off and turned back on.

Fairfax Water treats Potomac River water at the Corbalis plant and Occoquan Reservoir water at the Griffith plant, on a connected system. Hardness at the tap varies with season and source, landing in the moderately hard to hard range most of the year. Fairfax Water uses chloramines from about July through March and free chlorine from about April through June.

Signs it's time

• Crusty aerators and shower doors that won't come clean
• A water heater that rumbles or produces less hot water
• An old softener that leaves water tasting salty, or never uses salt
• Low pressure that started after a softener was installed years ago
• Scale flakes clogging the dishwasher or washing machine inlet screens

If two or more of these sound familiar, a tap test is the sensible first step before any equipment decision.

Timing and seasonal notes

Many owners notice the spring chlorine switch and assume the softener has failed; it hasn't, since softeners don't treat disinfectant. Winter is a poor time to have pipes opened in a cold crawlspace or garage, so if the softener will sit near an exterior wall, schedule before the first hard freeze. If new or relocated piping is involved, Fairfax County Land Development Services issues the permit; like-for-like replacements in the same place are exempt.