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Information
On this page, you will find Environmental Services' sewer and stormwater rates and charges for fiscal year 2025-2026. Rates are subject to change on July 1 every year. Historical rates from previous years are also available at the bottom of this page.
Sanitary Sewer User Charges
Sanitary sewer services
- Residential users: $13.54 per 100 cubic feet (1ccf) of metered water volume
- Nonresidential users: $14.00 per 100 cubic feet (1ccf) of water consumption
Special meter charge
$26.00 per special meter bill
Extra-strength charges
- Biological oxygen demand: $1.036 per pound
- Suspended solids: $1.309 per pound
Batch discharges and construction dewatering
$14.00 per 100 cubic feet of water consumption
Publicly-owned drinking fountain or single-pass waste fountain
$0.001 per 100 cubic feet (1ccf) of metered water consumption or metered discharge volume
Stormwater Management User Charges
Equivalent Service Units - All customers
$6.310 per stormwater service unit per 30 days
Residential users
- All users except those listed below: $14.013 per 1,000 square feet of stormwater billable area per 30 days
- Within the managed floodplain: $11.747 per 1,000 square feet of stormwater billable area per 30 days
- Overwater structures: $0.00 per 1,000 square feet of stormwater billable area per 30 days
Nonresidential users
- All users except those listed below: $14.300 per 1,000 square feet of stormwater billable area per 30 days
- Within the managed floodplain: $11.990 per 1,000 square feet of stormwater billable area per 30 days
- Overwater structures: $0.00 per 1,000 square feet of stormwater billable area per 30 days
Non-stormwater discharges to the MS4 (clean to storm)
$1.654 per 100 cubic feet (1ccf) of metered, measured, or estimated discharge volume
Residential Stormwater Class Average
Residential development with one individual dwelling unit per tax lot, where each dwelling unit has an individual user account
- Tier 1 (Small): 1,500 or less square feet of stormwater billable area
- 1,200 square feet of stormwater billable area per account
- Tier 2 (Standard): 1,501 to 2,700 square feet of stormwater billable area
- 2,400 square feet of stormwater billable area per account
- Tier 3 (Large): 2,701 or greater square feet of stormwater billable area
- 3,600 square feet of stormwater billable area per account
Residential development with more than one dwelling unit per tax lot, where a dwelling unit has an individual user account
- Two dwelling units on the same tax lot
- 1,200 square feet of stormwater billable area per account
- Three or more dwelling units on the same tax lot
- 1,000 square feet of stormwater billable area per account
Residential development with more than one dwelling unit per tax lot, where there is more than one dwelling unit per user account
- Two dwelling units on the same tax lot
- 2,400 square feet of stormwater billable area per account
- Three dwelling units on the same tax lot
- 3,000 square feet of stormwater billable area per account
- Four dwelling units on the same tax lot
- 4,000 square feet of stormwater billable area per account
- Five or more dwelling units on the same tax lot
- Measured or estimated square feet of stormwater billable area per account
Other configurations of units, tax lots, and user accounts are assigned stormwater billable area to be as consistent with the above as possible.
Discounts
Single-family financial assistance
- Tier 1: -$47.05 per 30 days for eligible single-dwelling ratepayers only
- Tier 2: -$75.28 per 30 days for eligible single-dwelling ratepayers only
Clean River Rewards
Discounts are available for ratepayers that manage stormwater on their properties. Discounts are limited to 35% of the total stormwater management user charge.
Regulated Affordable Multifamily Assistance Program (RAMP)
- Tier A: 50%
- Tier B: 35%
Smart Discount Program
The Program will offer targeted, percentage-based discounts using the factors and data analyzed. Discounts will range from five percent (5%) to eighty percent (80%).
Portland Harbor Superfund Charges
Sanitary volume component
$0.04 per 100 cubic feet of water consumption
Stormwater billable area component
$0.19 per 1,000 square feet of stormwater billable area per 30 days
Administrative Fees and Penalties
Special tax assessment penalty
20% of ratepayer’s balance subject to assessment
Residential Sanitary Discharge Volume Average and Minimums
Residential user class average
5 ccf per dwelling unit
Single dwelling residential
- Monthly billing frequency: 6ccf per billing period
- Bimonthly billing frequency: 6ccf per billing period
- Quarterly billing frequency: 9ccf per billing period
Multi-Dwelling Residential
- Monthly billing frequency: 3ccf per dwelling unit per billing period
- Bimonthly billing frequency: 6ccf per dwelling unit per billing period
- Quarterly billing frequency: 9ccf per dwelling unit per billing period
System Development Charges (SDCs)
All development projects that create new or increased demand on the public sewer and drainage system are subject to sanitary and stormwater system development charges (SDCs), except for additions and alterations to existing single- and multi-dwelling residential developments that do not add new dwelling units.
This charge covers costs associated with maintaining, operating, and building major sewer and stormwater facilities and treatment plants. The total charge varies based on the number of drainage fixture units. Multi-family and commercial properties pay more depending on how many units they have or their demands on the sewer system.
Note: Permits for newly created housing units issued from August 15, 2025, through September 30, 2028, may be exempt from SDCs under certain conditions. Learn more about those exemptions and whether they may apply to your project.
Sanitary SDCs rate
- Tier 1 Occupancies: $572 per drainage fixture unit
- Tier 2 Occupancies: $763 per drainage fixture unit
- Tier 3 Occupancies: $1,308 per drainage fixture unit
Determining your sanitary SDC
All sanitary SDCs are calculated on a tiered rate structure by multiplying the net new number of DFUs by the rate (published above) for the appropriate occupancy tier.
Sanitary SDC rate tiers by occupancy type are outlined below. These rate tiers are established by Environmental Services and reflect the Bureau's assessment of water usage per DFU by occupancy type.
- Residential developments. SDCs for residential units, including those within mixed-use developments, are charged 60-percent of the Tier 1 rate per DFU.
- Mixed-use developments. SDCs for mixed-use developments are based on the combined total of all SDCs calculated for each occupancy type and tier.
- Change in occupancy. SDCs are calculated by multiplying the net increase of DFUs by the SDC rate tier corresponding with the new occupancy type.
- Part-year usage. Educational institutions that can demonstrate to the satisfaction of the City that the development will require public water service for nine months or less of the year may request up to a 25 percent discount on their sanitary SDCs.
- Occupancy types not listed. The City will evaluate occupancy types not listed in Table 1 on a case-by-case basis and assign a rate tier consistent with occupancy types having similar water usage and sanitary flows.
SDC Rate Tiers by Occupancy Type
| Tier 1 | Tier 2 | Tier 3 |
|---|---|---|
Automotive retailers Automotive and other repair services Business offices Care facilities Churches/clubs/organizations Construction trade services Education/cultural sites Fire stations Hospitals Hotels/motels/lodging Industrial/manufacturing uses Recreational vehicle parks Rental/storage services Repair services Residential (see Section 5.B) Senior living facilities Schools/colleges/universities | Clinics/medical offices Clothing & dry goods stores Coffee shops/delis/catering Dental offices Drinking establishments/ tasting rooms Food carts with direct connections General retail sales Spas/beauty and barber salons Pet grooming/pet boarding Warehouses used for storage | Beverage processing/ distilleries Cannabis growing and processing Car washes Food service – cart pod Food service – fast food Food service – restaurant Grocery stores/ supermarkets Laundry services/self-services |
For more detailed information about sanitary SDCs, see the full Administrative Rules for Sanitary and Stormwater System Development Charges.
Stormwater SDCs rate
$532 per 1,000 square feet of stormwater billable area
Determining your stormwater SDCs
Stormwater SDCs for residential and commercial development are based on the net increase of impact on the storm system using measured square feet of stormwater billable area on a site. The City will calculate the stormwater SDCs by multiplying the development's net increase of stormwater billable area by the stormwater SDC rate.
For more detailed information about stormwater SDCs, see the full Administrative Rules for Sanitary and Stormwater System Development Charges.
Wastewater Permit and Authorization Fees
Industrial wastewater permit fees
Permit Base Fee by Permit Type (The total permit fee is comprised of the base fee plus actual costs for enforcement and monitoring as well as a DEQ SIU fee, if applicable
- Categorical industrial users (CIU): $4,075 per year
- Significant industrial users (SIU): $3,395 per year
- Non-significant industrial users (NSIU): $1,945 per year
- Non-discharging categorical industrial users (NDCIU and ZDCIU): $290 per year
Alternative discharge control mechanism
$190 per year
Batch discharge authorization
$205 per unit
Construction dewatering permit with discharge to sanitary or combined systems
$350 per unit
Stormwater Discharge Permit and Authorization Fees
Discharge authorization
$50 per unit
Discharge permit
$250 per unit
Public Work Permit Hourly Rates
- Project manager (per hour): $220 per hour
- Construction manager (per hour): $190 per hour
- Engineering technician (per hour): $170 per hour
- Inspector (per hour): $180 per hour
- Green infrastructure (per hour): $190 per hour
- Maintenance (per hour): $240 per hour
Green Stormwater Infrastructure Fees
Green infrastructure inspection
- One to five facilities: $1,530 per permit
- Six or more facilities: $2,135 per permit
Green stormwater infrastructure operations and maintenance
- One to five facilities:
- Base fee: $2,115 per permit
- Square footage fee: $37.22 per square foot of planted facility area
- Six or more facilities:
- Base fee: $3,645 per permit
- Square footage fee: $37.22 per square foot of planted facility area
- Large bioretention facilities - less than or equal to 2,500 square feet
- Base fee: $2,115 per permit
- Square footage fee: $20.96 per square foot of planted facility area
- Large bioretention facilities - greater than 2,500 square feet
- Base fee: $3,645 per permit
- Square footage fee: $20.96 per square foot of planted facility area
Construction warranty fee
$1,145 per permit
Hourly rate for natural area ecologist services
$195 per hour
Development review recording fee
$90 per recording
Source Control Manual and FOG Fees
Special Circumstances Review Application Fee
$111 per application
FOG variance request processing fee
$250 per application
Extra strength additional sample
$310 per sample
Stormwater Management Manual Fees
Special circumstances application fee
$105 per application
Offsite management fee
$5.41 per square foot
Manufactured stormwater treatment technologies application review fee
$7,650 per application