Charleston Water System — the Mount Pleasant address exception

Phone (843) 727-6800. Service-area page: charlestonwater.com/221/Service-Area. WHAT CWS PUBLISHES: it provides "direct retail water service to 123,000 accounts, serving areas of Charleston, Berkeley, and Dorchester counties," and "direct retail sewer service within the City of Charleston, unincorporated areas in West Ashley, parts of Johns Island within the urban growth boundary, and the Cainhoy peninsula." Its water territory is materially larger than its sewer territory, so one address can have CWS water and a different sewer provider. IMPORTANT ACCURACY NOTE: neither CWS's service-area page nor MPW's public pages publish a street-by-street Mount Pleasant boundary, and CWS's page does not name Mount Pleasant. This brief therefore does not assert which specific Mount Pleasant streets are CWS vs MPW. Both utilities publish a searchable service-area map — CWS at the URL above, MPW by calling (843) 884-9626 with the address. Check the address on the map or by phone before assuming which utility bills it, and expect that water and sewer may come from two different providers at the same house.