Biosolids digester construction at the Southeast Plant
MWH CONSTRS & WEBCOR BLDRS A CNST JV · PUC Public Utilities Commsn
The Public Utilities Commission is paying a joint venture of two construction firms to build a digester that processes the solids removed from sewage. The register books it as a unilateral construction contract, the vehicle it uses for change orders. San Francisco agreed $2.2B with MWH CONSTRS & WEBCOR BLDRS A CNST JV for contract 1000005952 (PUC Public Utilities Commsn); $5.1B has been paid on it so far. Source: SF Controller supplier contracts (open data), data as of 13 July 2026.
The Public Utilities Commission is paying a joint venture of two construction firms to build a digester that processes the solids removed from sewage. The register books it as a unilateral construction contract, the vehicle it uses for change orders.
Register title: “PUC CMGC SEP BIOSOLID DIGESTER”
Signed by Public Utilities Commsn
$5.1B paid · $2.9B more than the recorded base amount · Agreed $2.2B
These bars total $1.9B; the figure above is $5.1B. The first comes from the City’s payment ledger, the second from the contract register’s own paid column. They match on ordinary contracts and drift apart on multi-phase projects, where the work runs through several purchase orders and the ledger counts all of them.
- Dataset
- Supplier Contracts
- This contract in the source
- Raw rows (JSON, data.sfgov.org)