Why a map helps
In a leak, the first minutes matter. A taped-up sheet by the garage door showing where the main shutoff is, and which fixture valves stop which lines, means anyone in the house can act without searching.
After a repipe, valve locations can change completely. A manifold may put every fixture's shutoff in one cabinet, and the main valve may move. Redo the map before the crew leaves so they can confirm it.
Shutoff map template
| Valve | Location | Type (lever or wheel) | Tested on | Notes |
|---|---|---|---|---|
| Main house shutoff | ||||
| Meter (provider side) | Provider's valve; use a meter key only if you know how | |||
| Water heater cold inlet | ||||
| Kitchen sink | ||||
| Dishwasher | ||||
| Refrigerator line | ||||
| Washer | ||||
| Each toilet | ||||
| Each bathroom sink | ||||
| Manifold (if any) | ||||
| Irrigation |
Build it
Walk the house
Start at the main shutoff, then visit every fixture and appliance that uses water.
Test gently
Close each valve slowly and confirm water stops. Do not force a stuck valve; note it instead.
Sketch a floor plan
Mark each valve with a number matching the table.
Post copies
Keep one near the main valve and one on your phone.
Add these too
- Breaker panel location.
- Gas meter location, with a note: if you smell gas, leave and call 911 or SoCalGas from outside.
- Your water provider's contact from your bill.
- Valves that would not close, for the plumber to replace.
Common questions
Should I turn off gas myself?
If you smell gas, leave first and call 911 or SoCalGas from outside. Do not stay to operate valves.
My main valve will not turn. What now?
Do not force it. Note it and ask a plumber to replace it; a repipe is a good time.
How often should I test valves?
Many owners test fixture stops once a year. Ask a plumber what suits your valves.
General information for Yorba Linda, not a quote or professional advice. In an emergency, call 911.