Know where your water comes from
Modesto's drinking water comes from a mix of treated Tuolumne River water, supplied through a partnership with the Modesto Irrigation District, and city groundwater wells. Mineral content can differ between surface water and groundwater, and the mix reaching your home can change over time. If you notice white crust on faucets and showerheads, spots on dishes, or a water heater that rumbles, minerals are likely building up. The City of Modesto's annual water quality report lists what's in your water; check it before buying treatment equipment so you know what problem you're actually solving.
Water heaters and mineral buildup
Minerals that settle at the bottom of a tank water heater form sediment that insulates the water from the burner, making the heater work harder and sometimes producing a popping or rumbling sound. Flushing the tank periodically and checking the anode rod can extend its life. Tankless water heaters need periodic descaling, especially where water is hard. If a plumber recommends a water softener or filter, ask them to show you test results for your water and explain what the equipment will remove.
Irrigation and outdoor plumbing
Modesto homes often have extensive lawn and landscape irrigation, and the plumbing behind it needs attention too. Broken sprinkler heads, cracked lines and stuck valves can waste a great deal of water before anyone notices. Check the system by running each zone and walking the yard. Backflow prevention devices protect the drinking water supply from irrigation water and should be checked according to your water provider's requirements.
Older homes and drains
Many Modesto neighborhoods have homes with original cast-iron drains or clay sewer laterals. Tree roots from mature trees are a common cause of recurring backups. A camera inspection shows whether the problem is roots, a sagging section or broken pipe, and that tells you whether clearing, lining or replacement is the better choice.
Winter
Modesto winters are mild, but tule fog can bring cold, damp stretches. Hard freezes are uncommon, but outdoor spigots, irrigation backflow devices and exposed pipes on the north side of the house are still worth insulating, and hoses should be disconnected on frosty nights.
Before you hire
Ask Modesto plumbers whether they're familiar with local water conditions, whether they recommend a water test before installing treatment equipment, and how they handle permits for water heater replacement and sewer repairs.
Signs your water heater needs attention
Rust-colored hot water, a rumbling or popping sound when the burner runs, water around the base of the tank and hot water that runs out faster than it used to all point to a heater that needs service or replacement. Have a plumber check the relief valve, the anode rod and the venting.
If the tank is leaking from the bottom, plan for replacement rather than repair. Shut off the water to the heater and turn off its gas or power until a plumber can look at it.
Water pressure
Pressure that is too high wears out faucets, toilet valves and water heater components early. If fixtures hammer or the relief valve on the water heater drips, ask a plumber to measure the pressure. A pressure-reducing valve and an expansion tank solve most pressure problems.