Coconut Grove 27th Avenue Mystery Outfall
This outfall on 27th Avenue in Coconut Grove is discharging water at all times, and often times, discharges marine debris along with it.
Miami Waterkeeper received a report that a 27-inch stormwater outfall pipe at Dinner Key Marina in Coconut Grove has been continuously discharging large volumes of water into Biscayne Bay, even during long periods with no rainfall. We believe that this flow must not be rain-dependent and may be in violation of Clean Water Act.
The outfall pipe is owned by the Florida Department of Transportation (FDOT). Local boat slip owners report that they have seen the outfall discharging continuously for more than 17 years.
In Fall 2017, Miami Dade County tested the outfall and found elevated levels of fecal bacteria in the water.
No local, state, or federal agencies -- including FDOT -- have taken any action to address this discharge to date.
What is Miami Waterkeeper doing about it?
Miami Waterkeeper documented the flow on video on multiple dates when no rainfall had occurred or several weeks prior.
We tested the water being discharged and found it to be:
- high in nutrients
- extremely high in the fecal-associated bacteria enterococcus, and
- low in salinity (indicating a non-marine source)
The discharge also contains significant plastic and other debris, much of which is being released directly into the Bay.
Our Miami Waterkeeper team sizing up the situation- photo documentation and water samples are obtained to be used for further action.
WE NEED YOU
Your contribution will help us fund further water quality testing of this outfall so we can get to the bottom of this mystery! If need be, we will take necessary legal action to prevent pollution from this outfall -- and others -- into Biscayne Bay.