Yeah, our brown is locally grown.

There is treated discharge sill but no new ones.

Rockledge/Cocoa discharge runs through a few retention areas then under US/1 and Rockledge Drive a bit south of Rockledge Gardens. There's a diffuser dumping under US1 in Eau Gallie.  The nutrient supply is fairly stable.

As for new development, the newer developments do a better job of stormwater management than all the old stuff.

The nutrient buildup is legacy. 2010/2011 may have been a tipping poing that shifted the internal cycling to plankton dominance.

Still a crapload of septic and still way too many fertilizer intensive lawnscapes.

Thing is, if you've flipped a system to plankton dominance it takes a radical reduction in the nutrient load to turn back.

Rockledge is managing to send more and more storm-water west. Vierra discharges to the St. Johns. Palm Bay still largely discharges to Turkey Creek. The St. Johns Water Management District is working on the "C1 Rediversion Project" to keep more of that Palm Bay water in the St. Johns basin. That C1 project is a major challenge because so much of west Palm Bay is barely above the elevation of the St. Johns. That new school is often below the level of the St. Johns when the river is at season high stage. It takes active pumping at the west end of C1 plus gravity feed to the east to keep that area dry.