Filing Requirements of Maps and Digital Mapping Data
When filing applications to obtain or amend a CCN, or petitions for expedited release from a CCN, Applicants must file hard copy maps and digital mapping data identifying the requested area(s). The initial application filed with the PUC requires 10 copies, whereas supplemental filings require 7 copies of both physical maps and physical media (ex: CDs, USB flash drives) containing digital mapping data. The filing requirements of both maps and digital mapping data must be filed in the acceptable file format using the approved media formats indicated below.
Filing Maps: Each copy of a map must be filed in its original size (to scale) and shall not be reduced or enlarged.
- File each unique map in a hard copy (paper) format; and
- File each unique map in an electronic copy (Adobe PDF) format
Digital Mapping Data: All file formats of digital mapping data containing the requested area(s) must be georeferenced in either NAD 83 Texas State Plane Coordinate System (US feet) or in NAD 83 Texas Statewide Mapping System (meters). Each file format shall include a single, continuous polygon record labeled as the requested area. The digital mapping data must be filed in the approved media formats indicated below.
Acceptible File Formats
- Shapefile (.shp)
- Geodatabase (.gdb)
- Drawing file (.dwg)
Acceptible Media Formats
- Data disk (CD)
- USB Flash Drive
Mapping Frequently Asked Questions
The following documents provide detailed mapping requirements on filing hard copy maps and digital mapping data for applications related to Certificates of Convenience and Necessity (CCN), including obtaining or amending a CCN and requests for expedited release from a CCN.
Certificate of Convenience and Necessity (CCN)
A Certificate of Convenience and Necessity (CCN) gives a CCN holder the exclusive right to provide retail water and/or sewer utility services to an identified geographic area. Chapter 13 of the Texas Water Code requires a CCN holder to provide continuous and adequate service to the area within the boundary of its CCN. Municipalities and districts normally are not required to have a CCN; however some municipalities and districts do have a CCN. A district or municipality may not provide retail water or sewer services within an area for which another utility holds a CCN unless the district or municipality has a CCN for the area.
Types of Certificated Service Areas:
Bounded Service Areas: These are certificated service areas that form closed boundaries. These boundaries often follow identifiable physical and cultural features such as roads, rivers, streams and political boundaries.
Facilities +200 Feet: These are certificated service areas that are represented by lines; however, they also include a buffer of a specified number of feet (usually 200 feet). The lines can, but may not correspond to distribution lines or facilities in the ground, and normally follow along roads.
Facilities Only: These are certificated service areas that are represented by lines; however, they are granted for a "point of use" that covers only the customer connections at the time the CCN is granted. Facility only service lines can, but may not correspond to distribution lines or facilities in the ground, and normally follow along roads.
Water and Sewer CCN Viewer
The PUC's CCN Viewer enables users to search, view, and print retail water and sewer certificated service areas for holders of Certificates of Convenience and Necessity (CCNs).
* Update 8/3/2016: New layers have been added to reflect the latest boundaries of the Texas House and Senate Districts, for the 84th Legislative Session. 2015-2016.
The CCN Viewer is best viewed with Internet Explorer 9.0 and above, or the latest version of Google Chrome or Firefox.
Water and Sewer Digital Mapping Data
PUC's official digital mapping data may be used to view certificated service areas and prepare map filings for applications to obtain a CCN or amend a CCN holder's certificated service area. We suggest using this data to remove any overlaps with existing certificated service areas before filing digital mapping data for a requested area(s) with an application.
The digital mapping data includes certificated service areas for retail water and sewer utilities, which are available for download in a shapefile format.
Download CCN Data Files: PUC CCN Water Data (.zip) | PUC CCN Sewer Data (.zip)
Please E-mail email@example.com questions you have regarding CCN maps, the CCN viewer or data files.
Who Provides Water and/or Sewer Service to a Property?
If you need help finding out who provides retail water and/or sewer services to an address or property, please review and return the form below to the PUC Mapping Staff either by email or mail.
PUC Service Request Form
Please email requests to:
Please mail requests to:
Public Utility Commission of Texas
Water Utility Division
Attention: Mapping Staff
P.O. Box 13326
Austin, TX 78711-3326