Serving the community is of utmost importance, however, due to the financial effects caused by COVID-19, we are unable to process unsolicited requests for funding at this time. In addition, the Local Entity grant application process is currently closed.

  • Imperial Dam

Municipal, Industrial and Commercial Customers

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Last updated March 4, 2020

IID provides raw (untreated) Colorado River water to municipal, industrial and commercial customers. For a complete description of IID’s Water Rules and Regulations, please refer to Regulation No. 3 Application for Service.

Industrial water users may be required to sign a contract, which specifically limits the amount of water discharged into IID drains, and maintain a water metering device. The contract may also specify the water holding facilities required for the industry.

New Water Supply Agreements
In September 2009 the IID Board of Directors adopted an Interim Water Supply Policy for Non-Agricultural Projects (IWSP) to provide a mechanism to address new water supply requests for proposed projects being developed within the IID service area. The IWSP designates up to 25,000 acre-feet of IID’s annual Colorado River water supply for any new projects, provides a mechanism and process to develop a water supply agreement for any appropriately permitted project, and establishes the framework and set of fees necessary to ensure the supplies used to meet any new demands do not adversely affect existing users by funding water conservation or augmentation projects.

Depending on the nature, complexity and water demands of the proposed project, new projects may be charged a one-time Reservation Fee and an annual Water Supply Development Fee (see chart) for the contracted water volume used solely to assist in funding new water supply projects. All new industrial use projects shall be subject to the fee, while new municipal and mixed-use projects shall be subject to the fee if the projects’ water demands exceed certain District-wide average per capita use standards. The applicability of the fee to mixed-use projects will be determined by IID on a case-by-case basis, depending on the proportion of types of land uses and the water demand proposed for each project. Additionally, new projects will be charged the appropriate water rate (see Water Rate Schedules) based on actual water use.

Interim Water Supply Policy
2020 Annual Non-Agricultural Water Supply Development Fee

Annual Demand (AF)

Reservation Fee ($/AF)*

Development Fee ($/AF)*













*To be adjusted annually after 2010 in accordance with the Consumer Price Index (CPI).

To date, IID has one issued Water Supply Agreement under the IWSP totaling 1,200 acre-feet per year, leaving a balance of 23,800 acre-feet per year of supply available for contracting under the IWSP.

For new, non-agricultural water supply, please read available information posted below. New project contacts in need of more detailed information from IID regarding the IWSP or water supply availability can be directed to Justina Gamboa-Arce at (760) 339-9085.

Temporary Land Conversion Fallowing Policy [PDF] Adopted 5/8/2012 (Revised 3/29/2016)
IID Interim Water Supply Policy (IWSP adopted 9-29-09 with 2020 revised fee schedule) [PDF]
IID Water Supply Assessment/Water Supply Verification Consultation Process [PDF]
IID-410 Certificate of Ownership and Authorization May 2011 [PDF]

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