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In contrast with the traditional Design-Bid-Build project approach, which typically involves at least seven principal parties and three separate contracts, PERC Water offers a single, unified design, construction and operations team. The integrated approach is proven to result in cost-saving construction techniques and a more economical design, which reduces life-cycle cost and limits the client’s risk.

For a more in-depth discussion of the available delivery methods, take a look at our study Delivery Methods for Water Infrastructure Development
The Design-Build project approach requires only one contract for construction and design resulting in a single point of accountability for the client. Construction can begin before the design is complete and this overlap results in a more efficient use of time and cost.

The Design-Build-Operate project approach enables the client to work with the same integrated Design-Build entity to operate and maintain the facility after commissioning and startup. This approach transfers the risk of performance of the facility over the long term to the entity responsible for designing and building the facility, which significantly reduces the risk. PERC Water has operated every facility we have designed and built.

Case Study – SPA 3 Water Recycling Facility

The Design-Build-Operate-Finance project approach is our best risk management alternative. This approach is a “Fee for Service” method whereby PERC Water and our financial partner will finance the design, construction and startup of the facilities without any capital cost commitment required by the public agency. When facility operations begin, PERC Water and our financial partner will be paid a service fee by the public agency for the treatment and recycling of wastewater. This service fee includes capital repayments, operations and maintenance, capital replacements and power guarantees.

This approach enables projects to begin immediately without delays while waiting for grants, State Revolving Funds or the sale of Municipal Bonds. At the end of the Service Agreement term, ownership of the facilities is transferred to the public agency.

Case Study – Santa Paula Water Recycling Facility

The following table provides an overview of risk allocation between the traditional Design-Bid-Build delivery method and the delivery methods PERC Water offers:

Risk Allocation

  Traditional Design-Bid-Build PERC Water Design-Build Approach (DB) PERC Water Design-Build-Operate Approach (DBO) PERC Water Design-Build-Operate-Finance Approach (DBOF)

Design & Build

Design/Build Cost Client PERC Water PERC Water PERC Water
Schedule Completion Client PERC Water PERC Water PERC Water
Construction Warranties Client PERC Water (Minimum Statutory Period) PERC Water
PERC Water


Water Quality Performance Client Client PERC Water PERC Water
Capital Replacement Client Client PERC Water PERC Water
Power Client Client PERC Water PERC Water
Biosolids Client Client PERC Water PERC Water
Life Cycle Costs Client Client PERC Water PERC Water
Operation & Maintenance Client Client PERC Water PERC Water


Long Term Financing Client Client Client PERC Water/
Financing Partner
Interest Rate Client Client Client PERC Water/
Financing Partner

Asset Management
Central PERC™
PERC Automation
PERC Solar