Baltimore, Maryland: water and wastewater capital improvement projects
212 line items · $4.7B · starting 2026–2031 · 2 plans
Baltimore's published capital plans list 212 water, sewer and wastewater line items with a combined planning budget of $4.7B, of which 73 items worth $2.0B sit in the wastewater and sewer departments. The largest single item is Future Water Main Replacement at $280M (2027–2031). The ten largest items are listed below; the full list with descriptions and page references is in Klarifi.
A capital improvement plan (CIP) is a city’s multi-year budget for building and replacing infrastructure. The water, sewer and wastewater sections list each project with its budget and the years it is funded, which makes them the earliest public signal that a plant, pump station or pipe network is about to be upgraded, usually two to four years before a contract is awarded.
The largest water and sewer projects in Baltimore
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Future Water Main Replacement | Water Distribution | Water mains and distribution | $280M | 2027–2031 |
| 2 | Baltimore St./Smallwood St./Reisterstown Rd. Area Water Main Replacements | Water Distribution | Water mains and distribution | $200M | 2026–2030 |
| 3 | OF Hyd Outfall Phase II Sewershed Improvements for 5 Year Storm LOP | Sewer | Force mains and interceptors | $155M | 2027–2029 |
| 4 | (Project 1355) Activated Plant 3 Rehab at BRWWTP | Wastewater | — | $122M | 2027 |
| 5 | Construction Reserve Meter Replacement | Water Distribution | Meters and AMI | $110M | 2026–2031 |
| 6 | Urgent Needs Large Meters WW | Water Distribution | Meters and AMI | $110M | 2026–2031 |
| 7 | Gwynns Falls Phase II Sewershed Improvements for 5 year LOP (GF-2_Conveyance Upgrade) | Sewer | Sewer rehabilitation and I&I | $98M | 2028 |
| 8 | Back River Centrate Treatment Facility | Wastewater | Wastewater treatment plant upgrades | $74M | 2025–2030 |
| 9 | BR WWTP Sludge Storage | Wastewater | Biosolids, sludge and dewatering | $73M | 2028 |
| 10 | TBD Back River Centrate Treatment Facility | Wastewater | Wastewater treatment plant upgrades | $69M | 2031 |
202 more line items in Baltimore, with descriptions and contacts
Klarifi holds every Baltimore line item with its description, the page it appears on and the source document, plus 16 verified contacts at the city’s treatment plants. Track new plans as they are adopted and compare with similar projects in other cities.
Planned spend by start year
Before 2026
$736M
43 items
2026
$1.5B
70 items
2027
$1.2B
41 items
2028
$592M
26 items
2029
$284M
18 items
2030
$161M
8 items
2031
$222M
6 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 46 | $1.2B | 25% |
| Sewer | 27 | $841M | 18% |
| Water Supply | 102 | $1.4B | 30% |
| Water Distribution | 37 | $1.2B | 27% |
Project types in Baltimore's plan
Wastewater treatment plants in Baltimore
2 publicly owned treatment plants in Baltimore with 54 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Back River Wastewater Treatment Plant | 114.1 | MDL021555 | 32 |
| Patapsco Wastewater Treatment Plant | 49.01 | MDL021601 | 22 |
Other Maryland cities with capital plans
Baltimore capital plan questions
Sources and methodology
Budgets and years are as published in Baltimore’s capital improvement plan or adopted budget. Klarifi extracts the water, sewer and wastewater line items from the published document, keeps the page reference for each one, and assigns a project type from the title and description with a keyword classifier. Figures are planning budgets, not awarded contracts, and can change when a plan is re-adopted.
Documents: CIP 2026–2031 (119 line items); CIP 2025–2030 (93 line items).
Data refreshed September 11, 2026.