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 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, links to the application or formal complaint, the procedural schedule (if applicable), and Commission Orders entered in a case are provided here. In limited cases, additional documents are available for viewing from the website.

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 in Wilmington, Delaware.

  • On May 4, 2010, the Commission adopted PSC Order No. 7440 adopting proposed regulations to replace the existing "Regulations Governing Certificates of Public Convenience and Necessity for Water Utilities." The proposed regulations will be published in the June 2010 Registrar of Regulations. The Commission will accept comments on these proposed rules through June 30, 2010. Additional information regarding the proposed rules and where to direct comments may be found in the Public Notice of Proposed Rule-Making.
  • Pending Water and Wastewater CPCN Applications: Applications for a Certificate of Public Convenience and Necessity (CPCN) filed by water and wastewater utilities are available for review from this page.
In The Matter of the Application of Wilkerson Water Company and Prime Hook Water Company (combined) for a General Rate Increase and Consolidation (Filed July 25, 2014) - PSC Docket No. 14-0254
  • Application
  • On August 19, 2014, the Commission entered Order No. 8617 opening the docket.
  • A Hearing Examiner will conduct a public comment session on Wednesday, October 1, 2014. Please see the public notice for more information.
IN THE MATTER OF THE APPLICATION OF ARTESIAN WATER COMPANY, INC. FOR AUTHORITY TO INCREASE RATES AND CHARGES FOR WATER SERVICE (FILED APRIL 11, 2014) - PSC Docket No. 14-132 IN THE MATTER OF THE APPLICATION OF TIDEWATER UTILITIES, INC. FOR AN INCREASE IN WATER RATES (FILED NOVEMBER 25, 2013) - PSC DOCKET NO. 13-466
  • Application
  • Testimony of witnesses Esposito, Kalmbacher, Patrick, O'Connor, and Tilley
  • Testimony of AUS Consultants witnesses Shambaugh, D'Ascendis, and Ahern on behalf of Tidewater Utilities, Inc.
  • Minimum Filing Requirements Index
  • A Hearing Examiner of the Delaware Public Service Commission will conduct public comment sessions on April 15, 17, and 24, 2014. Please see the notice for more information.
  • Testimony of Howard Woods on behalf of the Division of the Public Advocate
  • Testimony and schedules of Glenn Watkins on behalf of the Division of the Public Advocate
  • Testimony of Connie McDowell on behalf of Commission Staff
  • Testimony of Charles King on behalf of Commission Staff
  • Testimony of Brian Kalcic on behalf of Commission Staff
  • Testimony of Kevin Neilson on behalf of Commission Staff
  • Testimony of Ron Teixeira on behalf of Commission Staff
  • Testimony of Malika Davis on behalf of Commission Staff
  • Testimony of Lisa Driggins on behalf of Commission Staff
  • Testimony of Jason Smith on behalf of Commission Staff
  • Testimony of Amy Woodward on behalf of Commission Staff
  • Rebuttal Testimony of Tidewater Utilities, Inc. filed June 26, 2014. Corrected Exhibit A to O'Connor rebuttal testimony.
  • A Hearing Examiner of the Delaware Public Service Commission will conduct an evidentiary hearing concerning the above-captioned case on July 31, 2014. Please see the public notice for more information.
  • A Proposed Settlement Agreement was presented to the Hearing Examiner at the evidentiary hearing on July 31, 2014.
  • On August 19, 2014, the Commission entered Order No. 8611 adopting the Findings and Recommendations of the Hearing Examiner and approving the Settlement Agreement.
  • Commission Order No. 8164 issued in the last rate case

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