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Wastewater Retainage Credit

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FAQs
1. What is a "Wastewater Retainage Credit"?

2. Are irrigation or landscaping water uses eligible for the program?

3. Are sub-meters always required?

4. Are the credit values shown separately on the water bill?

5. When do the seasonal credit adjustments become effective?

6. Is a formal approval of new participants required?

7. Are there any service charges imposed by the Water System on customers that participate in this Program?

8. How often should the sub-meters be read?

9. Can a customer also read the main meter when the sub-meters are read, to ensure that all data are on a consistent time basis?

 

 

1. What is a "Wastewater Retainage Credit"?alt This credit is a reduction of the wastewater commodity charge on a customer’s water bill based on the amount of purchased water that is actually returned to the sewer for collection and treatment as wastewater. For example, if a customer can demonstrate that only 75% of the water purchased is returned to the sewer, then the wastewater commodity charge paid is only 75% of the billed water consumption, rather than the standard 100%. The other 25% of the water purchased is “retained” by the customer (e.g., evaporated in a cooling tower, used in a manufactured product, etc.) and is not returned to the sewer.

2. Are irrigation or landscaping water uses eligible for the program?alt No. These uses require separate meters and, as “Water Only” accounts are not subject to the wastewater commodity charge.

3. Are sub-meters always required?alt In some rare cases, the Water System has allowed the Retainage Analysis to be based on estimated values; however, in these cases, detailed operating records and other supporting data are necessary to verify the calculated values.

4. Are the credit values shown separately on the water bill?alt No. The credit percentage is applied to the wastewater commodity charge amount during the preparation of the bill, but is not shown as a separate line item.

5. When do the seasonal credit adjustments become effective?alt The "summer" credit is effective on May 1st, while the “winter” credit is effective on November 1st.

6. Is a formal approval of new participants required?alt Not unless the proposed application of the Retainage Program is unusual in nature. The approved engineers are very familiar with the Program, and they can advise prospective participants on the requirements for typical applications and contact the Water System for guidance if warranted.

7. Are there any service charges imposed by the Water System on customers that participate in this Program?alt No. The costs to the customer are related to fees for the engineering firm and for the installation and maintenance of the required sub-meters.

8. How often should the sub-meters be read?alt The sub-meters must be read monthly on the same schedule as the Water System’s reading of the customer’s main meter. If, after at least two full seasonal periods (two of each period), a consistent monthly usage can be demonstrated, the frequency of readings can be reduced to two per season.

9. Can a customer also read the main meter when the sub-meters are read, to ensure that all data are on a consistent time basis?alt Yes; however, if there is a discrepancy in the usage calculations, the Water System’s readings and billing records will govern for the period in question.


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