Richland Communities would like to build at least 800 homes on 184 acres they bought for $8 million along with the Hat Mansion adjacent to Manteca’s southeast city limits.There’s just one problem: There’s no water source to serve the homes.A proposal floated before the South San Joaquin Irrigation District board a few years back to transfer the “water rights” to irrigate vineyards on the land was meet with an extremely cold shoulder even though urban water use would be basically the same as for a vineyard. But the SSJID board wasn’t thrilled about setting such a precedent that could snowball into other requests to rapidly urbanize other areas within its jurisdiction.That led to another feeler from Richland to essentially free up existing potable water use in Manteca by financing purple pipeline to deliver recycled wastewater to large irrigation users such as possibly the golf course, school playing fields, parks, and other large landscaped areas.The concept can’t be explored as a potential option until the city completes work on its recycled wastewater masterplan. The document would allow city policies and objectives.