ISD carefully manages public funds through strong financial oversight and long-term planning. The Board of Directors reviews and approves the budget each year at a public meeting. Financial performance is monitored throughout the year, and spending is controlled with internal policies and purchasing rules.

ISD also undergoes an independent annual financial audit by an outside certified public accounting firm.  ISD follows formal financial policies, including:

•        Long-range financial planning

•        A Capital Improvement Program (CIP)

•        Reserve policies

•        Debt management policies

•        An investment policy

•        Competitive bidding for public works projects

Since 2017, ISD has received the Certificate of Achievement for Excellence in Financial Reporting from the Government Finance Officers Association (GFOA). This national award recognizes ISD’s commitment to transparency, and high-quality financial reporting.

Sewer service charges are set through cost-of-service analysis and in compliance with Proposition 218, which ensures that revenues do not exceed the cost of providing sewer service. 

Grants are competitive, limited, and usually tied to specific projects. They cannot pay for daily operations, routine maintenance, or most infrastructure replacement. Sewer rates must cover the full cost of providing ongoing service.

ISD keeps financial reserves to handle emergencies like equipment failures, storm damage, or new regulatory changes. Having these reserves helps protect ratepayers by reducing the need for sudden rate increases.