Case Study: Water Replenishment District achieves compliant in‑house payroll and streamlined fund accounting with MIP Fund Accounting

Using MIP Fund Accounting to Support the Clean Water Needs of Millions

Water Replenishment District, the largest groundwater agency by population in California serving roughly 4 million residents across a 420‑square‑mile service area, faced a payroll continuity challenge when leadership considered outsourcing payroll after a staff transition. Because the District must track complex government payroll elements—labor allocation, benefits, taxes and compliance—they needed a solution that preserved accuracy and control; they evaluated a national payroll processor but ultimately retained their longtime vendor, MIP Fund Accounting, and its payroll and fund accounting capabilities.

MIP Fund Accounting recommended keeping payroll in‑house using its payroll module within the broader MIP Fund Accounting system, allowing Water Replenishment District to maintain direct control of financial data, simplify labor allocations, reduce redundancies, and minimize errors. The District successfully transitioned payroll internally under Senior Accountant Binhyen Bui, achieved faster response to changes and cleaner cost reporting, and has continued using MIP Fund Accounting for decades—demonstrating measurable gains in efficiency, accuracy, and long‑term operational continuity.

Water Replenishment District

Binhyen Bui

Senior Accountant