Corpus Christi, Texas: water and wastewater capital improvement projects
110 line items · $3.4B · starting 2026–2031 · 1 plan
Corpus Christi's published capital plans list 110 water, sewer and wastewater line items with a combined planning budget of $3.4B, of which 37 items worth $1.1B sit in the wastewater and sewer departments. The largest single item is Seawater Desalination (Inner Harbor Plant) at $641M (2025–2027). 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 Corpus Christi
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Seawater Desalination (Inner Harbor Plant) | Water Supply | Planning, studies and asset management | $641M | 2025–2027 |
| 2 | City-Wide Wastewater ID/IQ | Wastewater | Biosolids, sludge and dewatering | $222M | 2025–2034 |
| 3 | City-Wide Water Line Repair/Replacement - Large Diameter | Water Distribution | Water mains and distribution | $160M | 2025–2034 |
| 4 | City-Wide Water Line Repair/Replacement - Small Diameter | Water Distribution | Water mains and distribution | $160M | 2025–2034 |
| 5 | City-Wide Collection Capacity Remediation | Wastewater | Sewer rehabilitation and I&I | $108M | 2025–2033 |
| 6 | Seawater Desalination Inner Harbor Plant | Water Supply | — | $105M | 2028 |
| 7 | Oso WRP Process Upgrade & BPC Facility Decommission | Wastewater | Wastewater treatment plant upgrades | $98M | 2025–2028 |
| 8 | ONSWTP Third Treatment Train | Water Supply | Water treatment plants | $97M | 2027–2029 |
| 9 | Water Utility Support - Streets projects | Water Supply | — | $91M | 2025–2034 |
| 10 | Wastewater support for Street projects | Wastewater | — | $87M | 2025–2034 |
100 more line items in Corpus Christi, with descriptions and contacts
Klarifi holds every Corpus Christi line item with its description, the page it appears on and the source document, plus 48 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
$2.3B
59 items
2026
$168M
8 items
2027
$152M
5 items
2028
$405M
18 items
2029
$72M
4 items
2030
$125M
5 items
2031
$52M
7 items
2032 and later
$69M
4 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 36 | $1.1B | 31% |
| Sewer | 1 | $6M | 0% |
| Water Supply | 43 | $1.6B | 46% |
| Water Distribution | 30 | $751M | 22% |
Project types in Corpus Christi's plan
Wastewater treatment plants in Corpus Christi
4 publicly owned treatment plants in Corpus Christi with 32 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Oso WWTP | 16.32 | TX0047058 | 1 |
| City Of Corpus Christi | 3.9 | TXS000601 | 13 |
| Laguna Madre WWTP | 2.52 | TX0047104 | 15 |
| Whitecap WWTP | 1.35 | TXR05AZ20 | 3 |
Other Texas cities with capital plans
Corpus Christi capital plan questions
Sources and methodology
Budgets and years are as published in Corpus Christi’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 2025–2027 (110 line items).
Data refreshed September 11, 2026.