 
 <prompt> Most of the Miami metropolitan area dey get dem drinking water from wetin kind underground source? Given the previous question, write one context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: ```Under the plain dey di Biscayne Aquifer, wey be natural underground source of fresh water wey dey extend from southern Palm Beach County reach Florida Bay, with e highest point dey around di cities of Miami Springs and Hialeah. Most of di Miami metropolitan area dey get dia drinking water from dis aquifer. As a result of di aquifer, e no dey possible to dig pass 15 to 20 ft (5 to 6 m) beneath di city without hitting water, wey dey disturb underground construction, even though some underground parking garages dey exist. For dis reason, di mass transit systems for and around Miami dey elevated or at-grade.``` 