City of Mauldin completes major $4 million sewer rehabilitation project

While daily commutes and neighborhood routines carried on uninterrupted above ground, city utility teams and specialized contractors were busy completing a massive infrastructure renewal beneath the streets of Mauldin.

The City of Mauldin officially announced the completion of its Basin RG2 Sanitary Sewer Rehabilitation Project, a major engineering initiative aimed at overhauling aging underground lines, fortifying system reliability, and safeguarding community health and local waterways for decades to come.

Targeting subterranean pipelines that have served the community for more than 60 years, the project relied on modern trenchless restoration methods designed to reinforce underground capacity without turning neighborhood lawns and roadways into open trenches.

Modern Technology Revitalizes Decades-Old Pipes

Rather than digging up entire roadways, crews utilized cured-in-place pipe (CIPP) lining—a specialized technology that inserts and cures a jointless, durable resin pipe directly inside deteriorated existing lines. The process effectively seals fractures, stops tree root intrusion, prevents groundwater infiltration, and adds an estimated 30 years of operational life to the municipal collection system.

By the numbers, the project accomplished:

• Nearly 14 miles of sewer lines cleaned and thoroughly inspected, identifying critical trouble spots and leading to 42 main line repairs and 218 feet of new main line installations.

• Nearly 10 miles of deteriorating clay pipe structurally rehabilitated with trenchless CIPP lining.

• 38 service laterals repaired to secure household-to-main connections.

• 136 sewer manholes upgraded, including 27 structural repairs and 109 full manhole rehabilitations to seal against street runoff and soil infiltration.

State Grants Offset Local Costs

The multi-million-dollar infrastructure upgrade was made possible through a partnership between state grant programs and municipal matching funds.

In April 2023, the City of Mauldin secured a $3,399,750 grant from the South Carolina Rural Infrastructure Authority (RIA). The city paired that state award with roughly $600,000 in local matching funds to cover engineering design, technical testing, and construction services.

City officials noted that proactively upgrading aging underground systems prevents catastrophic line failures and protects water quality while ensuring Mauldin’s core utility backbone keeps pace with ongoing residential and commercial growth across the Golden Strip.

Full project details and ongoing municipal capital updates are available online at cityofmauldin.org.