Santa Barbara plumbing guide

Drought, Leaks and Water-Saving Plumbing

Santa Barbara has lived through serious droughts, and water conservation is part of daily life here. Plumbing is where a lot of household water goes, and where a lot of it is wasted. Here is how to keep it in the pipes.

Reviewed October 13, 2026 · General information only; not engineering or legal advice

A supply that swings

Cachuma Lake, the reservoir on the Santa Ynez River that serves several South Coast agencies, was created by Bradbury Dam in 1953. Its level swings widely: during the 2011–17 drought it fell to about 7.3 percent of capacity in October 2016, and storms in late 2022 and early 2023 filled it for the first time in 12 years (Wikipedia: Cachuma Lake). Five agencies from Santa Ynez to Carpinteria take water from the lake.

Local suppliers manage that variability: the City of Santa Barbara (City of Santa Barbara, Water Resources), Goleta Water District (Goleta Water District), Montecito Water District (Montecito Water District) and Carpinteria Valley Water District (Carpinteria Valley Water District) each publish their own water-supply and conservation information.

Leaks are the easy win

The EPA's WaterSense program estimates that household leaks waste nearly a trillion gallons nationwide each year, and that about one home in ten has leaks wasting 90 gallons or more a day. The most common are worn toilet flappers, dripping faucets and leaking valves (U.S. EPA WaterSense, Fix a Leak Week).

  1. Meter test: turn off all water use and watch the meter.
  2. Toilet dye test: food coloring in the tank; color in the bowl means a leak.
  3. Faucets and showerheads: look and listen for drips.
  4. Irrigation: check for soggy spots, broken heads and valves that weep.
  5. Water heater: check the relief valve discharge line for drips.

Efficient fixtures

WaterSense-labeled toilets, faucets and showerheads use less water and are tested for performance (U.S. EPA WaterSense). Replacing an old high-volume toilet is often the largest single indoor saving.

Drains and low flow

In some older homes with rough or sagging sewer laterals, lower flush volumes can let solids settle. If clogs begin after a fixture upgrade, a camera inspection of the lateral can explain why. See sewer line repair.

Hot water waste

Running the tap while waiting for hot water wastes water every day. Insulating hot lines, moving the water heater closer to fixtures in a remodel, or a recirculation setup can shorten the wait.

Supplier programs

Water suppliers on the South Coast have offered rebates, audits and conservation programs over the years. Programs change; check with your supplier for current offerings.

Related pages: leak detection & repair, toilet repair & replacement, faucets, sinks & fixtures, and what shapes an estimate.

Sources: Wikipedia: Cachuma Lake; City of Santa Barbara, Water Resources; Goleta Water District; Montecito Water District; Carpinteria Valley Water District; U.S. EPA WaterSense, Fix a Leak Week; U.S. EPA WaterSense.

Asked and answered

Short answers

  1. Where does Santa Barbara get its water?

    From a mix of sources managed by the City and local water districts, including Cachuma Lake. Each supplier publishes its own supply information.

  2. How much water does a leak waste?

    The EPA estimates about one home in ten has leaks wasting 90 gallons or more a day.

  3. What is the easiest leak to fix?

    A worn toilet flapper is one of the most common and simplest.

  4. Are there rebates for efficient fixtures?

    Programs vary over time. Check with your water supplier.

  5. Can low-flow toilets cause clogs?

    In older homes with damaged laterals, sometimes. A camera inspection can tell.

Ready to talk about your plumbing?

Send the details and expect a call back to talk the project through.

Start my plumbing estimate
Start my plumbing estimate