Wed, Jan 28, 2026
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Monday, 26 January 2026 08:08

Fish kill pollution incident from surface water drainage system costs Worcestershire firm over £1 million

A company has made a financial contribution of over £1 million to come into compliance and to deal with the effects of a pollution incident in 2018.

Environment Agency generic

An investigation by the Environment Agency has ended in Mettis Aerospace Ltd of Redditch making the payment under an Enforcement Undertaking (EU).

The company designs, manufactures, and assembles precision forged and machined components for the aerospace, defence and specialist sectors.

Mettis accepted that discharges from their metals installation, a site permitted by the Environment Agency, had caused a fish-kill incident.

The discharges, from the site’s surface water drainage system, arose from the uncontrolled overfilling of a process tank on the site and inadequate containment measures.

This meant a solution of caustic and sodium aluminate was able to leak into an unprotected surface water drain and into an adjacent watercourse. Approximately 1,000 fish were killed.

As an alternative to prosecution for the offence, Mettis offered an EU including spending some £504,240 on site infrastructure improvements.

Details of the EU include:

  • Donations to environmental enhancement projects in Redditch and the Black Country totalling £379,500.
  • Initial pollution clean-up costs of £111,268
  • Payment of the Environment Agency’s initial investigation costs of £9,324
  • Site infrastructure improvements, training and management systems development and certification costs of £504,240
  • Loss of amenity compensation payments to local charities £7,000
  • Payment of Environment Agency’s costs for assessing compliance with the EU £13,026

 

A spokesperson for the Environment Agency said:

“Protecting the environment and taking action against those that damage or threaten this is our utmost priority.

“While we will always prosecute in the most serious cases, enforcement undertakings are an effective enforcement tool to allow companies to put things right and contribute to environmental improvements.

“They enable businesses to become more compliant and prevent repeat offending by improving their procedures, helping ensure future compliance with environmental requirements.”

Four organisations received donations to environmental enhancement projects in Redditch and the Black Country totalling £379,500.

They were: Birmingham & Black Country Wildlife Trust £139,500; Worcestershire Wildlife Trust £5,000; Forge Mill Needle Museum £55,000; Redditch Borough Council £180,000.

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