Lillian sits on the western shore of Perdido Bay along Hwy 98, fifteen minutes from downtown Pensacola across the state line. Spanish Cove is the largest named neighborhood, and the Lillian boat launch is the working access point for the bay. Census data puts the median year built at 1996 across about 700 housing units, with 104 pre-1939 structures — a much higher pre-WWII share than the surrounding south-Baldwin communities, reflecting the older fishing-and-vacation cottage stock along the bay shoreline.
Lillian is largely a private-well town with some small community-system service. The well-water profile here is shaped by the bay-edge location: shallow wells along the shoreline live with the same chloride and sodium intrusion risk that defines Perdido Beach and Bayou La Batre, and ongoing chloride monitoring is the appropriate baseline practice. Spanish Cove specifically has a long history of community-discussed water quality, which makes it the neighborhood where periodic third-party testing is most actively practiced.
The older housing share is the second install factor. Pre-1939 cottages along the bay shoreline often have original galvanized plumbing or first-generation copper-with-lead-solder runs, which argues for whole-house sediment-and-metals filtration ahead of any drinking-water RO. Salt-air corrosion on bayfront equipment is equivalent to Orange Beach for service-life purposes, so stainless and brass fittings are the standard upgrade for any new point-of-entry installation.