Temecula's average July high is about 97°F, and the city gets only about 13 inches of rain a year, almost all of it in winter. Summer is when outdoor water use peaks, when irrigation leaks cost the most, and when hot garages and attics put extra stress on equipment.
1. Check irrigation before the heat arrives
Outdoor watering is the biggest part of most Inland Empire water bills. Rancho California Water District uses budget-based tiered rates, so a broken lateral or stuck valve can push you into a higher tier fast.
- Run each zone and walk it. Look for geysers, dry spots and soggy patches.
- Check valves for weeping.
- Do the meter test with all indoor water off. If the meter still moves, a yard line or irrigation leak is likely. See how to detect a slab leak for the full test.
2. Check your backflow device
Most irrigation systems have a backflow preventer, often a pressure vacuum breaker near the house. Sun and heat wear its seals. If it sprays when the system runs, it needs repair. If your water district sent a test notice, schedule it. See backflow services.
3. Flush the water heater
Water heaters in garages run in heat that can top 100°F. That does not hurt the tank, but hard water sediment does. A yearly flush in late spring keeps it quieter and more efficient. If yours is a tankless unit, schedule the annual descale.
4. Protect PEX and lines in the attic
Attic temperatures in a Temecula summer can be extreme. PEX is rated for it, but it must be supported properly and kept away from direct sunlight through gable vents. If you see sagging lines or lines resting on ducts, have them secured.
5. Pressure check
Pressure tends to be highest at night when demand is lowest. If you hear banging pipes or toilets refilling on their own, test pressure at a hose bib. Above 80 psi, the California Plumbing Code requires a pressure reducing valve.
6. Before vacation
- Close the main shutoff, or at least the washer valves.
- Set the water heater to vacation mode.
- Leave irrigation on a timer, but check the controller first.
- Ask a neighbor to glance at the meter once.
7. Pools and outdoor kitchens
Auto-fill valves on pools can hide a leak for months. Shut the auto-fill off for a few days and mark the water level. For gas lines to BBQs and fire pits, have new work permitted and pressure tested. See gas line services.