Watercad License Price

[Zareen Zapata]

OnJuly 1, 2024, City of Portland sewer, stormwater, and water utility customers saw changes to their sewer and stormwater rates and charges for connecting to the sewer. Learn more about those changes at Changes to Environmental Services Rates and Charges.

Sanitary sewer: Residential single-family or multi-family sanitary sewer charges are calculated using actual water flow, class average flow, or winter average flow. Residential customers are billed the winter average or actual water consumption during those billing periods, whichever is less. Non-residential sanitary sewer charges use actual water consumption.

Stormwater service unit: Stormwater service units refer to the number of dwelling units on the property. Single-family residential properties with one dwelling unit have one stormwater service unit. Residential properties with two dwelling units, such as one house and one ADU, have two stormwater service units. Those with three or more dwelling units will be billed 0.65 stormwater service units for each dwelling unit. Non-residential customer stormwater service units are calculated by dividing the stormwater billable area by 2,400 square feet.

Stormwater billable area: Stormwater billable area is the developed area of a property. Development prevents stormwater from flowing naturally or soaking into the ground. This includes areas like rooftops, porous pavement, patios, and driveways. Single-family residential properties are placed into a small, standard, or large category based on the developed area on their property.

** The stormwater billable area rate is per 1,000 square feet per 30 days. In the calculation above, the rate is first multiplied by 2.4 (standard category is billed at 2,400 square feet) and then multiplied by three to represent a 90-day or quarterly billing period.

The example below is for a multi-family residential customer who used 350 ccf (one ccf equals 100 cubic feet), has 35 dwelling units, has 25,000 square feet of stormwater billable area, and is billed quarterly.

*The stormwater service unit rate is per 30 days. In the calculation above, the number of dwelling units is first multiplied by 0.65 to get the number of service units. The number of service units is multiplied by the stormwater service unit rate and then by three to represent a 90-day or quarterly billing period.

** The stormwater billable area rate is per 1,000 square feet per 30 days. In the calculation above, the rate is first multiplied by 25 (25,000 square feet) and then multiplied by three to represent a 90-day or quarterly billing period.

*The stormwater service unit rate for commercial customers is calculated using the square footage of impervious area, not the number of dwelling units like residential customers. In the calculation above, 40,000 square feet is first divided by 2,400 square feet to get the number of service units. The number of service units is then multiplied by the stormwater service unit rate.

Over the next three years, Environmental Services will adjust stormwater rates for Drainage District customers to match rates more closely with those in the rest of the city and align with the cost of providing services.

Portland City Council directed Environmental Services to phase in rate changes for Drainage District customers over the next three years. The changes will start with 50 percent of the approved charge going into effect beginning July 1, 2024. The remaining increase will be phased in over the next two fiscal years (July 1, 2025, and July 1, 2026) until customers inside the Drainage Districts are paying the full cost of service rate as all other customers pay, adopted by City Council.

Environmental Service has other rates, charges, and fees for service categories and user types. For a complete list of Environmental Services rates, charges, and fees, download the complete FY 2024-2025 Rate Ordinance Exhibit A.

For residential accounts billed quarterly, the winter average is calculated based on water readings between February 1 and April 30. Most water consumed is used indoors during this time of year and enters the sewer system.

To calculate your winter average, divide the total winter average review period consumption by the total actual days of service in your review period (days between the billed meter readings in the winter average review period) and multiply by:

Environmental Services undergoes a financial planning process every year to determine the sanitary sewer and stormwater rates required to fund operations for the upcoming fiscal year. The final step is the Sewer and Stormwater System Rate Study.

Every year, Portland City Council votes on an annual rate increase. This vote sets rates for Environmental Services and the Portland Water Bureau. The annual rate increases allow the bureaus to raise the additional funding needed to cover the rising costs of providing services. These annual price adjustments ensure that the bureaus can operate effectively, purchase the necessary equipment and chemicals, hire staff, and invest in new projects.

The City of Portland ensures meaningful access to City programs, services, and activities to comply with Civil Rights Title VI and ADA Title II laws and reasonably provides: translation, interpretation, modifications, accommodations, alternative formats, auxiliary aids and services. Request these services online or call 503-823-4000, Relay Service: 711.

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