Plumbing
The Charleston Water System Sewer Lateral Grant
Charleston Water System will reimburse part of the cost of replacing a vitrified clay sewer lateral, from a $50,000-a-year fund that runs out each year.
Charleston Water System will reimburse part of the cost of replacing a vitrified clay sewer lateral, from a $50,000-a-year fund that runs out each year.
Quick answer: For a sewer lateral replacement, check Charleston Water System’s current grant eligibility and funding before including a reimbursement in your budget. Licensed plumbing subcontractors perform the plumbing work and pull their own required trade permits. Southeastern Renovation coordinates the project in the Charleston Lowcountry and York County, South Carolina. Call (843) 718-8177 to discuss the property and scope.
Plan the scope: Charleston plumbing cost guide · York County cost guide · What to check before hiring a plumber.
Vitrified clay was the standard sewer lateral material for decades and it fails in a characteristic way. In CWS’s own words, these laterals "often crack, break, separate, or have faulty seals at the joints", which lets stormwater and groundwater into the sanitary sewer. That infiltration is expensive for the utility and, in volume, contributes to sewer overflows — which is why they are willing to pay toward fixing it on private property.
The programme is system-wide, but CWS gives priority to applicants in West Ashley because of known infiltration problems there. Eligibility is limited to single-family residential sewer customers with a clay lateral, and household income must not exceed 150% of area median — for a household of four in 2026 that ceiling is $166,350, so it is not a narrow means test.
The order of operations matters and catches people out. You apply first, CWS reviews eligibility and authorises the work, and only then do you hire a licensed plumber. Replacing the lateral before you are authorised forfeits the reimbursement. CWS requires a full lateral replacement rather than a spot repair, though lining the full lateral may be considered case by case, and the claim needs an itemised receipt plus before-and-after photographs.
Serving Charleston, Mount Pleasant, North Charleston, Summerville, Goose Creek, James Island, West Ashley, Isle of Palms, Moncks Corner, Hanahan, Ladson, Daniel Island, Johns Island, Park West, Seabrook Island, Kiawah Island, Edisto Island, Folly Beach, Ravenel, Rock Hill, Fort Mill, Tega Cay, Lake Wylie, Clover, York, Indian Land across the Charleston Lowcountry and York County, South Carolina. Part of Plumbing.
A partial reimbursement, never exceeding actual cost; the per-home cap is set by Charleston Water System and is not published in the January 2026 agreement, so confirm it with CWS before you sign anything. CWS funds $50,000 in total per calendar year on a first-come, first-served basis, so the practical answer is that it is worth applying early in the year rather than late.
Single-family residential CWS sewer customers whose lateral is vitrified clay, with household income at or below 150% of area median.
The 2026 ceilings run from $116,550 for one person to $166,350 for four and $219,600 for eight. Income is verified through Palmetto Community Action Partnership. The programme is system-wide, with priority given to West Ashley.
No, and this is where the money gets lost. You apply, CWS confirms eligibility and authorises the work, and only then do you hire a licensed plumber.
Work done before authorisation is not reimbursed. CWS also requires replacement of the full lateral rather than a partial repair, and asks for an itemised receipt and before-and-after photographs.
Age is the first clue — clay was standard for decades before plastic replaced it — and a camera inspection settles it.
Clay laterals are also the ones most often found with root intrusion at the joints, which is why a recurring blockage in an older Charleston house is worth looking at with a camera rather than cabling repeatedly.