Groundwater Info Center
Well Completion Reports

DWR is responsible for maintaining a file of well completion reports, which must be submitted whenever a driller constructs, alters, or destroys a well. This is a valuable resource and service to landowners who want to find out about subsurface geologic conditions on their property or to determine particular well construction details for their water wells. The information is also valuable to researchers trying to better understand the groundwater basin.

Public Access to Well Completion Reports

In June 2015, Senate Bill 83 amended California Water Code §13752 (see below) to allow public access to Well Completion Reports. However, the law requires the Department of Water Resources to comply with The Information Practices Act of 1977, redacting personal information from the well completion reports before making them public. DWR has redacted the personal information from the approximately 800,000 reports on file. They are available online at no charge via a web mapping application here:

Well Completion Report Map Application

If you are unable to find reports of interest using this application, Department staff can process your request, but a fee may be charged as provided by the law. If you are interested in requesting well completion reports instead of using the free online access, please fill out a Well Completion Report Request Form and submit it to your DWR Region Office representative for an estimate of charges. Please note that requests for well completion reports are numerous and the availability of staff is limited. Clear and complete information is necessary to process your request. Unclear and/or incomplete information will delay the processing of your request.

California Water Code §13752.
(a) Reports made in accordance with paragraph (1) of subdivision (b) of Section 13751 shall be made available as follows:
      (1) To governmental agencies.
      (2) To the public, upon request, in accordance with subdivision(b).
(b) (1) The department may charge a fee for the provision of a report pursuant to paragraph (2) of subdivision (a) that does not exceed the reasonable costs to the department of providing the report, including costs of promulgating any regulations to implement this section.
      (2) Notwithstanding subdivision (g) of Section 1798.24 of the Civil Code, the disclosure of a report in accordance with paragraph (2) of subdivision (a) in the possession of the department or another governmental agency shall comply with the Information Practices Act of 1977 (Chapter 1 (commencing with Section 1798) of Title 1.8 of Part 4 of Division 3 of the Civil Code).

Other Well Forms for Well Drillers, Water Well Contractors, and Well Owners

To protect the State's groundwater supplies, the Legislature authorized the establishment of well standards (Department of Water Resources Bulletins 74-81 and 74-90) and regulations pertaining to the construction, alteration, and destruction of wells. California Water Code Section 13750.5 requires that those responsible for the construction, alteration, or destruction of water wells, cathodic protection wells, groundwater monitoring wells, or geothermal heat exchange wells possess a C-57 Water Well Contractor's License. This license is issued by the Contractors State License Board. California Water Code Section 13751 requires that anyone who constructs, alters, or destroys a water well, cathodic protection well, groundwater monitoring well, or geothermal heat exchange well must file with the Department of Water Resources a report of completion within 60 days of the completion of the work.

The new Online System for Well Completion Reports is now ready for use. OSWCR ("Oscar") allows water well contractors to submit their well completion reports online, replacing the paper-based system we've used for the last 60+ years. This version of the system focuses on allowing water well contractors to easily submit their reports to DWR. OSWCR is now in its soft-launch; training and documentation will soon follow. Please subscribe to our mailing list to keep up to date on scheduled training sessions... More Info

Well Completion Report Form - DWR 188 (PDF 437KB)
The free Adobe Reader may be used to view and complete this form. However, software must be purchased to complete, save, and reuse a saved form.

How to Get the Well Completion Report Form to Work (PDF 881KB)
These instructions are how to use the above-linked PDF form, these instructions detail the process of making a PDF document a "trusted document" to allow the system to populate the Well Completion Report number before you print the PDF.

How to Fill Out a Well Completion Report-Instructional Pamphlet (PDF 887 KB)
The California Water Code (Section 13700) recognizes that improperly constructed and abandoned water wells can be a source of groundwater contamination and a threat to public health. The purpose of this instruction pamphlet is to assist Water Well Contractors with filling out a Well Completion Report (WCR) to meet the requirements of California law. The Water Code requires Water Well Contractors file a WCR form with the California Department of Water Resources (Section 13751).

Well Data (PDF 249KB)
Well owners are encouraged to maintain records of their wells. The Well Data Form is a form on which well owners can record vital statistics about their well for their personal records.