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Replenishment Assessment Act
Under the authority of the Replenishment Assessment Act of the Alameda County Water District, ACWD charges operators of water production facilities an assessment based on the quantity of groundwater produced. 

Download a copy of the Replenishment Assessment Act.

Replenishment Assessment rates are reviewed annually; effective July 1, 2016, the assessment is $8.00/acre-foot for agricultural and municipal-recreation uses and $370.00/acre-foot for all other uses. Water wells, dewatering wells, and chemical investigation extraction wells are considered water production facilities.

Proposed Replenishment Assessment Rate Increase
ACWD replenishes and maintains the Niles Cone Groundwater Basin to ensure the supply and quality of local groundwater for the benefit of all its users. ACWD staff is proposing an 8.7% increase in the replenishment assessment (RA) rate for groundwater pumped or extracted for purposes other than agricultural and municipal recreation, effective July 1, 2017. This would change the rate from $370 to $402 per acre-foot of groundwater extracted. Only property owners with a well, well owners, and operators of wells (or other groundwater extraction facilities) within the ACWD-managed Niles Cone Groundwater Basin would be affected by this proposal. It does not apply to the rates and charges for water served to residences and businesses by ACWD's distribution system. A public hearing is scheduled for April 11, 2017.

Additional detail on how the proposed increase was calculated is provided in the 2017 Survey and Report on Groundwater Conditions (Survey Report). Click here for a copy of the Survey Report.

If you are subject to the proposed rate increase (see above) and would like to submit a protest online, click here.  Alternatively, you may submit a written protest addressed to:

Alameda County Water District
Attn: Proposed Groundwater RA Rate Increase Protest

By Mail - P.O. Box 5110, Fremont, CA 94537-5510
In Person - 43885 South Grimmer Boulevard, Fremont, CA 94538

If submitting by mail or in person, please be sure to include your name, daytime phone number (for protest verification), and the address of the property where the well is located.  Written comments or protests must be received by ACWD before the end of April 11, 2017, public hearing.  Online comments or protests must be received by 5:00 PM on April 11, 2017.