Chilmark is looking to rectify a longstanding problem with two town water wells. The select board met with Dave Schwoch and Jaqueline Noël, owners of Island Water Source, in early September to discuss the high presence of red clay in the water, the acidity levels and the dangers of rising copper levels when the water is unfiltered. “Alum injected into the water causes clay to clump into masses called flocs, Island Water Source wrote in the proposal. “If things work out as we hope they do, it wouldn’t be necessary,” select board member Matt Poole said. “The hope is the more water we use, eventually it’ll clear itself out,” added select board member Jeffrey Maida.