About us. Benton Washington Regional Public Water Authority(BWRPWA) is a water treatment facility located in Avoca, AR. We are professional, innovative, challenging, and committed to providing 17 communities in NWA with the best possible drinking water. We are staffed 24/7/365. Our work environment includes. Growth opportunities. On-the-job training. Job Summary. The Night Water Treatment Plant Operator will start with 4-6 weeks of day shift trai...