DAE Plumbing designs and installs water treatment systems in Hollister and the surrounding counties, including water softeners, whole-house filtration, and conditioning units. Treatment protects pipes, water heaters, and appliances from the region's hard water while improving taste and quality. Systems are sized to your home and installed by licensed plumbers, with free estimates.
When You Need Water Treatment
The Central Coast's water is hard, and the evidence shows up all over your home. You are a candidate for water treatment when white scale crusts your faucets and shower heads, when glasses come out of the dishwasher spotted, when soap will not lather and skin feels dry after showering, when laundry comes out stiff, or when the water tastes of chlorine or minerals.
- The damage you cannot see costs more: scale buildup inside water heaters shortens their life and cuts efficiency, mineral deposits choke fixtures and appliance valves, and tankless water heater manufacturers require treated water to honor warranties in hard-water regions. Well water around Hollister, San Juan Bautista, and rural San Benito County adds its own concerns, sediment, iron, and variable quality, that municipal customers do not face.
- Property owners with rentals call us because scale-related maintenance calls drop noticeably after treatment is installed.
If you are replacing a water heater or building new, that is the ideal moment to add treatment, because protecting the new equipment from day one maximizes its life.
Curious what is actually in your water and what it is doing to your pipes? Ask us about a treatment system sized for your home.
๐ Call (831) 801-1079Mon-Fri 7am-5pm, weekends by appointment
What the Process Looks Like
Good treatment starts with knowing what is in your water. We assess your water quality and your household's usage, then recommend a system matched to the actual problem rather than a one-size-fits-all unit.
- A softener for hardness, carbon filtration for taste and chlorine, sediment filtration for well supplies, or a multi-stage combination where the water calls for it. On installation day we plumb the system into your main supply line, typically at the garage or utility area, install a bypass loop so the system can be serviced without shutting down the house, connect the drain and power where required, and program the unit to your water conditions and household size.
- We then test the treated water, walk you through salt loading or filter replacement schedules, and leave you with a system that runs with minimal attention.
For rental properties and multi-building projects, we handle permitting and coordinate installation across every unit, work our clients have specifically praised in their reviews.



