High bill evidence checklist

Start with the bill:

- bill date
- bill period
- amount charged
- previous bill amount
- account number
- supply address
- water company
- wastewater company, if different

Check the reading:

- current meter reading
- date and time of reading
- photo of meter face
- photo of meter serial number
- billed reading
- whether the bill says actual, estimated, or customer reading

Check possible causes:

- new household member or changed use
- garden watering, building work, guests, medical use, or appliance change
- running toilet, overflow, damp patch, or hidden leak
- no-use meter test result
- plumber or repair evidence
- wrong meter possibility, especially in flats or conversions
- surface water drainage to public sewer, soakaway, or private drainage
- WaterSure, social tariff, payment plan, or Priority Services eligibility

Ask for:

- written calculation
- reading history
- meter serial number check
- leak allowance decision
- surface water drainage rebate decision
- support scheme assessment
- complaint escalation if the answer is incomplete