Dark green · 3 published zones
Best available forecast
Otter's most complete forecast for the water system serving your area, bringing its material public resource signals together.
Our highest-coverage view of what is likely to happen next.Forecast coverage
How clearly can Otter see where you live?
Every postcode gets a current hosepipe-ban check. In places with stronger public water data, Otter can also show what may happen next. Published numerical outlooks now cover 32 of England's 101 water-resource zones, representing about 70.9% of Census 2021 residents on the resident-weighted coverage measure.
Check my postcode
What you will see
Good forecasts, with the very best in darkest green.
Light green · 29 published zones
Strong local forecast
An independently tested forecast tracks an important reservoir, river or groundwater source serving your area. It can be accurate and genuinely useful even though it does not yet combine every operational part of the wider supply system.
A dependable forecast—not merely a current reading.Monitoring without a numerical outlook
Official alerts and garden guidance
Choose when updates arrive, hear when the official hosepipe-ban status changes, and get watering guidance based on recent rain and your local weather.
Otter still keeps watch, even before a dependable local water forecast is available.Explore coverage
Forecast detail follows water systems, not county lines.
The map is generated from the same zone register used by postcode outlooks. Dark green marks 3 zones with Otter's best, most complete system forecast; light green marks 29 zones with a strong independently tested local-source forecast; grey areas currently show official status and local weather without a water-level projection.
Interactive map ready when you reach itLoading is deferred so the postcode checker stays fast.
Marker key
Source
Reservoir / storage
Treatment works
Pump / transfer
Supplied areaNo current pressure signalPressure watchRestriction activeNo validated pressure forecast
Map layers5/6
Loading the vector map…
The honest answer
A postcode is the only reliable way to check your coverage.
Water-company boundaries do not follow towns, counties or postcode districts. Two nearby homes can be served by different systems, so a national total is less useful than the answer for your address.
Weather guidance can be local to your area. Water-level forecasts are usually tied to a water-company supply system, not to your street. Otter does not present one nearby reservoir as if it represented everything supplying your home.
Check my postcode