Why map it now
Hillside houses are often entered at a different level from where the water line arrives, and the main shutoff and regulator can be tucked behind shrubs or under a step. The meter box may be downhill at the street or uphill at the curb. In a burst pipe nobody wants to search. A simple sketch with each item marked turns a frantic hunt into a short walk.
Find and mark each of these
Location worksheet
| Item | Where it is | Type or notes | Tested on |
|---|---|---|---|
| Water meter | |||
| Main water shutoff | |||
| Pressure regulator | |||
| Irrigation shutoff | |||
| Water heater supply valve | |||
| Expansion tank | |||
| Sewer cleanout(s) | |||
| Gas meter and shutoff | |||
| Electrical panel |
Walk the map with your household
- Start at the meter.Show where it is, and explain that part of the box belongs to the utility; check with the city before using a valve on the street side.
- Follow the line to the house.Point out the main shutoff and practice closing and reopening it.
- Visit the water heater.Show the cold supply valve and the seismic straps.
- Finish at the cleanout.Explain that sewage backups mean stop using water and keep people away.
Things to ask a plumber on the next visit
- Is my main shutoff reliable, or should it be replaced with a ball valve?
- Should the regulator have shutoff valves on each side for service?
- Is my irrigation tied in before or after the house shutoff?
- Is there a second sewer cleanout I have missed?
Common questions
What if I cannot find the main shutoff?
Follow the line from the meter toward the house and check near the front hose bib and the garage. If it is still missing, a plumber can locate it and discuss adding an accessible valve.
Should I keep a tool by the valve?
If the handle is stiff or needs a key, keeping the right tool nearby saves time. Do not force an old valve with a long lever.
How often should we test the shutoff?
Once a year is a common habit. Close it, confirm the water stops, and reopen it fully.
General information for Coyote Hills, not a quote or professional advice. In an emergency, call 911.