After years of using unsightly portable restrooms, visitors to historic Slater Park in Pawtucket, Rhode Island, now have beautiful Clivus restrooms.  The City of Waltham, Massachusetts, also realized that their Prospect Hill Park pavilion guests could benefit from more appealing facilities. Not only are the restrooms clean, sanitary, and odor-free, they are engineered to protect the environment! These Clivus New England, Inc., model C-11 composting systems use no water and require no sewer or septic