Business water
Can you claim a
water refund?
Where the money hides
Bill review · no obligation- Many businesses are owed water refunds — most commonly from surface-water drainage they don't use, billing errors and estimated reads.
- If your site drains to a soakaway or watercourse rather than the public sewer, you may reclaim drainage charges, sometimes backdated.
- Checking your bill is often worth more than switching retailer, because wholesale charges (most of the bill) are fixed.
- The process is: identify the error, gather evidence, and raise it with your water retailer.
Water bills are rarely scrutinised, which is exactly why overcharges go unnoticed for years. The good news is that where you've been overcharged, you can often claim it back — sometimes backdated.
Where water refunds come from
- Surface-water drainage you don't owe — the most common. If rainwater from your site doesn't drain to the public sewer, you may not owe this charge.
- Billing errors — the wrong meter, tariff, or property details.
- Estimated reads — long-running estimates that overstated your usage.
The big one: surface-water drainage
Surface-water and highway drainage is charged on the assumption your site drains into the public sewer. If it actually drains to a soakaway or a watercourse, or part of your site is unbuilt, you may be able to reclaim the charge — and have it removed going forward. We cover this fully in our guide on surface-water drainage rebates.
How to claim
- Identify the error — review your bill line by line (see how to read your water bill).
- Gather evidence — a site plan or drainage details help prove where your water goes.
- Raise it with your retailer — request a correction and ask about backdating.
Why this beats switching
Because wholesale charges (most of your bill) are the same whichever retailer you use, correcting a billing error often saves more than switching alone. It's worth checking before you do anything else.
Think you might be owed money? Send us a recent water bill and we'll check it for reclaimable charges — free, no obligation. Call 0845 862 1947 or get in touch.
A water refund isn't guaranteed, but for many businesses the overcharges are real and reclaimable. Check your bill, gather your evidence, and raise it — the few minutes it takes can be well worth it.