No Water Supply Emergency
No water is the quiet emergency: nothing floods, nothing hisses, the house simply stops. And because a home without water cannot cook, clean or flush, 'quiet' does not mean 'can wait'. The diagnosis runs a fixed route from the street to the house, and most causes reveal themselves within the first few checks.
This page is that route: what to check before calling, what the answers mean, and which no-water cases are genuinely urgent for safety rather than comfort.
Common Causes
What usually turns the water off:
- Utility-side events. Main breaks, hydrant work, planned maintenance: the causes with the easiest fix, patience plus a status line.
- A closed or failed valve. Main house valves and curb stops that were closed, half-closed or died in place.
- Service line failure. The buried line breaking or a compression coupling letting go. Water flows, just not into the house.
- Frozen lines. In cold snaps, an exposed run freezing solid produces sudden no-water in part or all of the house, with the burst risk arriving at thaw.
- Meter and curb-stop issues. Failed meters and utility valves: the boundary cases the utility must handle.
How a Plumber Diagnoses the Problem
The street-to-house checklist:
- Is it every fixture, hot and cold? One dry faucet is a fixture problem; cold working while hot fails is a water heater story. True no-water means both sides, everywhere.
- Ask the neighbors and the utility. A block-wide outage is a main break or planned work. The utility's outage line answers in one call, and nothing in your house needs fixing.
- Check your main valve. Family members and contractors close valves and forget; a main valve mysteriously half-closed is a routine discovery.
- Look for the silent burst. A service-line failure can drink the entire supply: listen at the meter, look for a spinning dial, and scan the yard for a wet strip. Meter movement with no water indoors is the service line confessing.
- On wells: the separate route. Breaker, pressure switch, tank, pump: the well checklist lives on the Well Water Systems pages, and a well household with no water is urgent by definition, since there is no utility behind it.
No-Water Help
Report what the checklist showed: neighbors' status, your main valve position, and whether the meter moves. Those three answers usually name the culprit before arrival.
Get an Emergency Plumberor call (800) 555-0147Only license-checked plumbers who cover your ZIP receive your request.
Frequently Asked Questions
The whole house suddenly has no water. What do I check first?
In order: both hot and cold at several fixtures, the utility's outage line or a neighbor, then your own main valve. Those three steps resolve the majority of no-water calls in under fifteen minutes, often without a wrench.
When is no water an actual emergency?
When the household cannot function safely (medical needs, small children, no sanitation), when freezing is involved, or when the meter shows water flowing that never arrives, meaning it is going somewhere destructive. Comfort can wait a scheduled slot; those cannot.
How do I tell my problem from the utility's?
The boundary is the meter or curb stop: pressure absent at the meter is the utility's case; pressure at the meter that dies before your fixtures is yours. Neighbors' status is the quickest first signal: shared outage, shared cause.
Could a frozen pipe cause no water without a leak?
Yes. Ice blocks flow before it splits pipe, and some freezes never split at all. Sudden no-water in a cold snap, especially on runs through garages, crawl spaces or exterior walls, is treated as a freeze until proven otherwise, and thawed carefully, with the main accessible, because the split shows at thaw.
The meter is spinning but no water reaches the house. What does that mean?
Water is leaving the system between the meter and your fixtures: a failed service line or an open path underground. That is an urgent case, since you are paying for water that is undermining soil, and it routes straight to service-line diagnosis.