How to use this map
Walk the house with a flashlight and this page printed out. For each valve, write where it is in words someone else would understand, such as 'left of the garage door, behind the recycling bin', and note what kind of handle it has. Then test each one gently.
Keep a copy inside a kitchen cabinet door and a photo on your phone. If you rent the house out or have a sitter, give them a copy too.
Water shutoffs
| Valve | Where it is | Handle type | Tested on |
|---|---|---|---|
| Main house shutoff | ____________ | Wheel / lever | ____ |
| Water heater cold inlet | ____________ | Wheel / lever | ____ |
| Kitchen sink (hot and cold) | Under sink | Oval / lever | ____ |
| Dishwasher | ____________ | Oval / lever | ____ |
| Refrigerator line | ____________ | Small valve | ____ |
| Washing machine (hot and cold) | ____________ | Lever / oval | ____ |
| Each toilet | Behind toilet | Oval | ____ |
| Each bathroom sink | Under sink | Oval | ____ |
| Irrigation or hose bib supply | ____________ | Varies | ____ |
Other locations to record
| Item | Where it is | Notes |
|---|---|---|
| Water meter box | ____________ | City's equipment; contact the city's water utility for meter issues |
| Pressure regulator (if any) | ____________ | Usually near the main |
| Sewer cleanout | ____________ | Do not open during a backup |
| Gas meter | ____________ | If you smell gas, leave and call 911 or SoCalGas from outside |
| Electrical panel | ____________ | Needed if water reaches outlets or appliances |
Testing each valve safely
Turn slowly
Old valves can be stiff. Use hand pressure first, not a wrench.
Confirm it works
With the valve closed, open the fixture. Water should stop or slow to nothing.
Reopen fully
Turn it back all the way so the fixture has full flow.
Check for drips
A small drip at the stem after turning is common on older valves. Note it on the map.
Mark failures
Any valve that will not close or leaks badly goes on a list for a plumber's next routine visit.
Before you put the map away
Common questions
What if a fixture has no shutoff valve?
Note it. In an emergency at that fixture you will need the main. A plumber can add a valve during routine work.
Should I test the curb valve at the meter?
That valve is part of the city's water system. Leave it to the utility unless you are told otherwise.
How often should I redo the map?
Update it after any plumbing work, a remodel or a water heater replacement.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.