Four Connecticut companies have agreed to pay $613,000 to resolve legal matters for violating the state’s Clean Water Act. A fifth company is being served with state court action by the attorney general’s office.

The Connecticut Fund for the Environment announced last week that Electric Boat, Cytec, Whyco and Allegheny Ludlum will pay fines after receiving notices of intent to sue last September. The companies entered into formal Department of Environmental Protection consent orders to address the allegations in CFE’s notices.