City Expands Basement Sewage Backup Cleanup

Baltimore's cleanup program now covers dry-weather sewage backups caused by blockages on the city-owned side of sewer lines.

Updated on Nov. 9, 2026 in Emergency Response

Photograph of a cast-iron street sewer grate in weathered brick curbside gutter on a rainy Baltimore rowhouse street, with debris in the drain. — Baltimore expanded its Sewage Onsite Support Cleanup Program to cover dry-weather basement backups caused by blockages on city-owned sewer lines, offering free cleanup to eligible residents. AI Illustration. Upload story photo >

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Baltimore City has expanded its Sewage Onsite Support Cleanup Program to cover qualifying dry-weather basement sewage backups, which were previously covered only when linked to wet-weather events. Eligible homeowners and renters receive cleanup and disinfection services from third-party contractors at no cost.

Why it matters

Dry-weather backups, which can occur when debris or other obstructions restrict wastewater flow, were previously excluded from city assistance. The change extends cleanup help to Baltimore residents facing these blockages in their homes.

The city's program terms set a $5,000-per-household cap on Expedited Reimbursement and exclude dry-weather backups from that reimbursement option. The extraction does not report how many dry-weather backups occur in Baltimore or how many households have used the program.

The players

Department of Public Works (DPW)

Baltimore City's agency responsible for investigating sewer backup incidents and determining eligibility for the Sewage Onsite Support Cleanup Program and Expedited Reimbursement Program.

The details

Residents who experience a basement backup should report it to 311, and the Department of Public Works investigates each incident to determine whether it qualifies. Residents may receive assistance through either the cleanup program or the Expedited Reimbursement Program, but not both for the same backup.

Seasonal Patterns

The Sewage Onsite Support Cleanup Program previously covered only backups tied to wet-weather events, so the expansion to dry-weather blockages broadens the program beyond its original scope. The extraction does not provide historical backup frequency data for comparison.

Baltimore residents who experience a basement sewage backup should report it to 311 right away so the Department of Public Works can determine eligibility for free cleanup and disinfection services. Homeowners and renters should not expect both the cleanup program and the Expedited Reimbursement Program to cover the same backup.

The takeaway

Reporting a basement backup to 311 promptly is the first step to getting it evaluated under the city's cleanup program. Residents should keep records of cleanup expenses in case they pursue the Expedited Reimbursement Program for a qualifying backup.