Delaware Public
Service Commission

Water Regulation

Table of Contents

Role of the Commission

Most aspects of water distribution, including the rates that can be charged, are regulated by the PSC; however, other matters such as water quality are also regulated by other state and federal agencies. Additionally, if any water utility wishes to expand its service territory, it must apply for and be granted a Certificate of Public Convenience and Necessity (CPCN).

In July 2001, the General Assembly and the Governor enacted a new 26 Del. C. Section 314 whereby water utilities subject to the Commission’s jurisdiction are authorized to initiate and thereafter revise a “Distribution System Improvement Charge” (“DSIC Rate”). Under this DSIC Rate mechanism, a water utility – during the period between its full rate case proceedings – may recover its depreciation expenses and an additional amount of return (pre-tax) associated with its capital investments in completed “eligible distribution system improvements.”

The Commission does not regulate the water services of municipalities or governmental authorities, with the exception of granting, under certain circumstances, CPCNs to those entities.

Regulated Utilities

Consumer Information

Important or Pending Cases

A complete list of all electric related cases filed with the Commission is available on the Commission’s Regulated Utility Filings. Cases filed after July 7, 2014 are available through the DelaFile E-filing system Opens in new window page.

Following is a list of cases that have, or are likely to, generate a significant amount of public interest. To assist the public with participation in these matters, summaries with docket numbers are provided below along with a link to our Delafile system for related documents.

All case related documents are available for review by appointment at the Commission Office in Dover, Delaware, or at the Office of the Public Advocate Opens in new window in Wilmington, Delaware.

SC Docket 16-0163 – On February 5, 2016, SUEZ Water Delaware, Inc. filed an application seeking approval of: (a) a general rate increase in water rates of $4,943,665 or 19.96% of total operating revenues; (b) approval of a return on equity of 10.25%; and (c) miscellaneous tariff changes. For more information on this filing please visit our Delafile E-Filing Opens in new window system page.

Local, Regional and National Issues

Water Regulation Archive

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