For some 40 years, churchgoers at Our Lady of Victory Catholic Church have enjoyed a grassy oasis tucked off Windmill Lane in southeast Las Vegas. The towering trees and green grass keep them cool in blazing summers. The longevity of those peaceful gardens came into question last year when the Southern Nevada Water Authority sent church leaders a letter, insisting their grass was “non-functional” and must be removed before a law takes effect in 2027. “We understand there’s a water issue going on here, but you just can’t broad-brush something and put everybody in a certain category,” said Paul Clay, a 64-year-old parishioner. “And that’s exactly what they did.” The church is perhaps the most unique plaintiff to join a high-profile lawsuit against the water authority’s enforcement of the state law. It is meant to rein in turfgrass irrigation — the single-largest use of water from Lake Mead that cannot be captured and recycled through Southern Nevada’s robust wastewater purification and delivery systems .…