Rock-Moore Water Association Address: 6920 Harrison St, Sulphur Rock, AR 72579 Phone: (870) 799-2023 Water & Sewage Companies-Utility Other Businesses: Sulphur Rock Elementary School at 480 N Main St, Sulphur Rock, AR 72579 Rodney Hughes Construction, Inc. at 147 Gilmore Rd, Sulphur Rock, AR 72579