Knowing how and where to shut off your home’s main water supply is as important as knowing how and where to turn-off or reset an electric breaker or replace a fuse.
Every home is required to have a main water shut-off valve installed inside the home during initial construction. So for most emergencies or repairs, shutting-off the proper inside valve will be our focus.
There are also underground shut-off valves installed at the property line; if shutting-off this valve is necessary, please call our main office at 419-633-6100, follow the prompts if it is outside our main office hours.
It is important to understand that different plumbing arrangements will dictate where the proper main supply valve is located:
- Home construction differs greatly; basements, crawl-spaces, and slab-on-grade.
- Water shut-off valves may have round “wheel” handles or lever handles.
Locating the proper valve
A. Basements – the shut-off valve is typically located near the front foundation wall. The main water may have come through the concrete floor or through the wall. The valve is typically within 3-5 feet of where the main water enters. In some cases, the main water may enter in a different area, like a mechanical room, up through the floor, near the water heater or furnace.
B. Crawl-space plus a basement – the shut-off valve may be where the water enters the basement or in some older homes, the shut-off may be inside the crawl space. If the latter is true, you may want to consider a secondary valve located in the basement.
C.) Crawl-space with no basement – the shut off valve will typically be located near the water heater or under the kitchen sink, but anywhere is possible. As with “B” above, it may be inside the crawl-space; in which case, you may want to consider a secondary valve located up in the living space (near the water heater or under a sink).
D. Slab-on-grade construction – the shut-off valve will typically be located near the water heater or under the kitchen sink, but anywhere is possible.