Because the two halves of Deerfield Beach were built roughly half a century apart. The city was incorporated in 1927, and its original core near the beach and the Intracoastal carries the pipe age you’d expect from a town that old, while the western half filled in mostly from the 1970s onward.
That gap matters more than the 31.4-kilometer drive from our Davie base does. A near-beach property is a reasonable candidate for original cast iron drains or a supply line that predates any repiping, while a western home is far more likely to already run on copper or PVC.
The city also runs its own water utility rather than buying from a neighbor, drawing from 14 active wells that reach into both the Biscayne and the deeper Floridan aquifer, which is part of why hardness and mineral content can vary block to block.