Gotha is an unincorporated Orange County community roughly eight miles east of Oakland, between Windermere and Ocoee, with a mix of older homes on wooded lots and newer building filling in around them. Permits for properties here run through Orange County.
The older properties often have water heaters in garages or utility rooms that have been adapted over the years, sometimes with venting that was altered when a roof or an addition changed, and sometimes with a relief valve that discharges somewhere it should not. Those are the details a replacement is meant to correct, and they are also the details that explain an intermittent fault nobody has been able to pin down.
The supply is the regional aquifer water, so scale and sediment behave as they do across west Orange County, and flushing remains the maintenance step that decides how much capacity a tank keeps.