Equivalent Dwelling Unit (EDU) Audit History


This information is for historical purposes only; as of Jan. 24, 2023 staff was directed to schedule a public hearing to repeal Resolution 32-16 and adopt an amended policy that eliminates additional water and sewerage equivalent dwelling units, or EDUs, for residential customers.

The Department of Public Works, Water & Sewerage Division (WSD), under the authority of Resolution 32-16 approved Sept. 27, 2016, authorized an Equivalent Dwelling Unit (EDU) audit of commercial and residential properties connected to the county’s water and sewer infrastructure.

An EDU is an allocation of capacity assigned, and permitted by the state, for each water system and each waste water treatment plant, one (1) EDU equals 18,000 gallons of water per calendar quarter or approximately 200 gallons of water per day. Capital Connection Fees are $3,000 for one water EDU and $5,400 for one sewer EDU. The fees are necessary for long-term maintenance and upgrades to support the infrastructure delivering safe water and collecting, treating and releasing effluent. 

The EDU audit reviewed water use over a certain time period and re-evaluates actual water consumption. The recent WSD EDU audit was between April 1, 2020, and March 31, 2022; EDU determinations were re-evaluated based on actual water consumption during the audit period. During this audit process, 220 residential customers and 87 business customers were determined to be using capacity beyond their current allocation. Impacted customers – those using more water than originally assigned - were notified about the results of the EDU audit via correspondence in late December 2022.