Jacksonville
The historic core on cast iron, galvanized and clay; JEA water at 11 to 17 grains; the riverfront that Irma put under water.
Where the calls go
Every area page lists the permit office, the water utility and its hardness, the pipe era, and the flood history, then the calls that housing produces.
Mandarin
The polybutylene belt of the late 1970s to mid-1990s, on 17-grain JEA water, with large lots still on septic.
Southside
Jacksonville's 1975-to-2005 growth on the hardest water in the city, 20 grains; irrigation and a backflow assembly at nearly every meter.
Arlington
1950s and 1960s block ranches with sixty-year-old copper under the slab: the slab-leak call, on 18-grain JEA water.
Jacksonville Beach
Three cities with their own wells and permit counters, 1960s cottages next to 2000s rebuilds, salt air on every exterior fitting.
Orange Park
The 1970s and 1980s Clay County suburb: polybutylene streets, the softest water on this site at 8 grains, two electric utilities.
Fleming Island
1990s and 2000s slab houses on CCUA water, wells and septic in Middleburg, and Black Creek's record 28.5-foot crest in 2017.
St. Augustine
Three cities in one: 1880s pipe in the Old City, 1960s copper on Davis Shores, 1980s polybutylene in the county, and Matthew's 2016 flood.
Ponte Vedra Beach
The hardest water on JEA's table, 22 grains at Nocatee: tankless heaters that scale, softeners on most new builds, backflow at every meter.
Fernandina Beach
A Victorian port town on its own utility, 1980s polybutylene on the island, wells and septic across mainland Nassau.