Nearly 1,800 gallons of waste oil spilled into a brook that flows into Connecticut’s Still River this week.
Waste oil containing metals spilled into Sympaug Brook in Danbury after a hose failed at a manufacturing facility owned by Stanley Engineered Fastening.
Some oil was recovered in the cleanup but some was also released into the brook.
State health officials recommend people refrain from fishing, bathing and other recreational activities until remediation is complete.