Anachrome Limited, a manufacturer of engineering components, was fined £3,200 for two offences and made to pay costs of £3726.50 plus a victim surcharge. It pleaded guilty.
The court heard that Severn Trent samples obtained on 25 May 2011 showed Anachrome had breached discharge limits.
Simon Cocks, waste water services director for Severn Trent Water, said: “The limits we set to regulate trade discharges are calculated to ensure they do not adversely affect the capacity of our sewage works to efficiently treat sewage, so exceeding this consent is not only illegal; it can also damage the sewage treatment process and risk causing harm to the environment.
“Our customers pay for damage to the sewer network and the treatment works, so it is important that we prosecute offenders in appropriate cases and take action to recover costs where possible.”
He added: “Rather than having to take action in court, we would prefer to work together with businesses to prevent any breaches occurring in the first place.”