UK Construction and Law

A housebuilder pays 201,500 pounds after jetted silt polluted two streams for six days

By Staff Writer  |  4 September 2026

Drain cleaning on a housing site at Yate sent silt into the Ladden Brook and the Tanhouse stream in July 2022. The regulator accepted an enforcement undertaking rather than prosecuting, and the money goes to three environmental charities.

The Environment Agency announced on 3 September 2026 that BDW Trading, part of the Barratt Redrow group, will pay 201,500 pounds to environmental causes under an enforcement undertaking. The pollution happened at the company's Ladden Garden Village development at Yate over six days in July 2022. A contractor jet washed silt while cleaning and surveying the land drainage, and the silt was blasted out of the drains and into the Ladden Brook and the Tanhouse stream.

The regulator investigated. BDW Trading acknowledged that it bore the responsibility and spent over 180,000 pounds on remediation, staff training and better practices for managing surface water. It also paid the regulator's costs and acquired a permit so that water discharges from the site are regulated.

Where the money goes

The undertaking directs 165,000 pounds to the Bristol and Avon Rivers Trust for the River Chew catchment fish recovery project, a community engagement project and eDNA fish monitoring. The Avon Wildlife Trust receives 25,000 pounds towards the cost of a community ecologist. The Tortworth Forest Centre in Gloucestershire receives 11,500 pounds for a woodland wellbeing programme and tree planting. The three sums add to 201,500 pounds.

An incident like this would have never happened with proper procedure in place. But BDW Trading's response to cleaning up the mess and investment in preventing it from happening again means we can accept an enforcement undertaking on this occasion.

James Edees of the Environment Agency

What an enforcement undertaking is

An enforcement undertaking is available to the Environment Agency as an alternative to prosecution or a monetary penalty for certain environmental offences. It is a legally binding voluntary agreement proposed by a business or an individual where the regulator has reasonable grounds to suspect that an offence has occurred. The power was introduced by the Environmental Civil Sanctions (England) Order 2010 and the Environmental Civil Sanctions (Miscellaneous Amendments) (England) Regulations 2010.

The route is open only to a company that has already done the work. The regulator's statement ties its acceptance of the undertaking directly to the clean-up and to the investment in stopping a repeat, both of which were in place before the offer was accepted.

The incident itself was ordinary site maintenance. Jetting land drains to clear and survey them is routine on a large housing development, and silt in a jetted drain has to go somewhere. Without a plan that says where, it goes to the outfall. A surface water management plan that covers maintenance activities as well as earthworks, a sediment control at every outfall, and a contractor briefed on both, are the procedures the regulator had in mind.

For the main contractor and the developer the lesson is in the attribution. The jetting was done by a contractor; the undertaking, the remediation bill, the costs and the reputational record all sit with BDW Trading as the site operator. On a housing site the party that holds the permit, or should have held one, is the party the regulator comes to.

Six days of silt cost a housebuilder over 380,000 pounds in remediation and charitable payments combined, plus costs, and it avoided a conviction only because it moved first. The regulator has said so in terms.