Drainage charges sit inside wastewater bills for years without review. On multi-let estates, older buildings and any site with soakaways or private drainage, the true position is rarely visible from the bill. Portrait’s audit establishes it, documents it and pursues the correction.
Qualifying single-site audits run under signed no reduction, no fee terms. Portfolio audits are quoted per instruction, scoped to records, site count and evidence required.
Charges, tariff bands and supplier records examined against mapped site data.
Roofs, surfaces and drainage routes measured and documented where the desk review justifies it.
Findings assembled into claim-ready documentation for the retailer, wholesaler or water company.
Tariffs corrected for the future and overpayment reclaimed for the past, reported at each stage.
Apportionment between occupiers, shared yards and common areas is where billing errors compound.
Soakaways, SUDS, watercourses and private systems mean some surfaces should never have been charged.
The longer a charge has run unchecked, the larger the potential backdated correction.
The desk review is free. If the account is sound, we say so and close the file.
