Downtown Water Plant Filter Hardware Renovation and SCADA Integration

Harlingen Waterworks System (HWWS) is requesting proposals for Downtown Water Plant filter control hardware replacement and SCADA integration under RFP No. 26-009, with proposals due September 29, 2026, and a pre-submittal conference scheduled for September 17, 2026, at 2:00 PM CT at the HWWS Main Building Training Room in Harlingen, Texas.

The scope requires replacement of filter controls for eight filters, integration into four existing podiums, and connection to the HWWS VTScada system. The new control system must duplicate the existing "Filter Magic" approved filter operation unless HWWS approves changes. Deliverables include hardware procurement, PLC programming, communications infrastructure, system testing, operator and maintenance training, and complete technical documentation.

Vendors must demonstrate experience within the past five years on at least five similar municipal water treatment control projects and possess expertise in industrial PLCs, industrial Ethernet, and VTScada systems. A 100-point evaluation framework allocates 30 points to project understanding and technical approach, 25 points to relevant water treatment PLC/SCADA project experience, 15 points each to project team qualifications and availability/schedule management, 10 points to references and past performance, and 5 points to technical requirement compliance.

The contract includes a minimum one-year warranty from final acceptance covering equipment, programming, workmanship, and system integration. Vendors must carry $1 million employer's liability, $1 million commercial general liability per occurrence, $1 million commercial auto liability, $1 million excess/umbrella liability, and $1 million professional liability insurance. Proposals must be submitted in four hard copies and one electronic PDF, limited to 15 pages (excluding forms) with 11-point minimum font. Contract negotiation is anticipated in October 2026, with board award scheduled for October 28, 2026. No contract value or pricing structure is specified; vendors must propose their own pricing and identify all recurring costs, assumptions, exclusions, and exceptions.