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Information
On this page, you will find Environmental Services' sewer and stormwater rates and charges for fiscal year 2026-2027. 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: $14.24 per 100 cubic feet (1ccf) of metered water volume
- Nonresidential users: $14.73 per 100 cubic feet (1ccf) of water consumption
Special meter charge
$27.34 per special meter bill
Extra-strength charges
- Biological oxygen demand: $1.089 per pound
- Suspended solids: $1.376 per pound
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
$6.650 per stormwater service unit per 30 days
Residential users
- All users except those listed below: $14.739 per 1,000 square feet of stormwater billable area per 30 days
- Within the managed floodplain: $12.352 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: $15.037 per 1,000 square feet of stormwater billable area per 30 days
- Within the managed floodplain: $12.607 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)
$1.739 per 100 cubic feet (1ccf) of metered, measured, or estimated discharge volume
Residential Stormwater Class Average
Note: The data used to measure stormwater billable area, as well as the category thresholds and property assignments, may be reviewed and updated periodically to support accuracy, fairness, and administrative efficiency.
Residential development with one individual dwelling unit per tax lot, where each dwelling unit has an individual user account
- Tier 1 (Small): 1,200 square feet of stormwater billable area per account
- Tier 2 (Standard): 2,400 square feet of stormwater billable area per account
- Tier 3 (Large): 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: -$49.49 per 30 days for eligible single-dwelling ratepayers only
- Tier 2: -$79.19 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% discount on sanitary and stormwater
- Tier B: 35% discount on sanitary and stormwater
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 minimum
- Monthly billing frequency: 3ccf per billing period
- Bimonthly billing frequency: 6ccf per billing period
- Quarterly billing frequency: 9ccf per billing period
Multi-dwelling residential minimum
- 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): $4,440 per year
- Significant industrial users (SIU): $3,400 per year
- Non-significant industrial users (NSIU): $2,120 per year
- Non-discharging categorical industrial users (NDCIU and ZDCIU): $315 per year
Alternative discharge control mechanism
$205 per year
Batch discharge authorization
$220 per unit
Construction dewatering permit with discharge to sanitary or combined systems
$380 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): $235 per hour
- Construction manager (per hour): $205 per hour
- Engineering technician (per hour): $185 per hour
- Inspector (per hour): $195 per hour
- Green infrastructure (per hour): $205 per hour
- Maintenance (per hour): $260 per hour
Green Stormwater Infrastructure Fees
Public green stormwater infrastructure construction inspection fee
- One to five facilities or large bioretention facilities, ≤ 2,500 square feet: $1,530 per application
- Six or more green street (ROW) facilities or large bioretention facilities, > 2,500 square feet: $2,325 per application
Public green stormwater infrastructure planning + 2-year maintenance base fee
- One to five green street (ROW) facilities or large bioretention Facilities, ≤ 2,500 square feet: 2,305 per permit
- Six or more green street (ROW) facilities or large bioretention Facilities, > 2,500 square feet: 3,970 per permit
Public green stormwater infrastructure planting + 2-year maintenance per area fee
- Green street (ROW) facilities: $28.51 per square foot of planted facility area
- Large biorention facilities (fee capped at 5,000 square feet): $13.74 per square foot of planted facility area
Construction warranty fee
$1,245 per permit
Hourly rate for natural area ecologist services
$210 per hour
Development review recording fee
$90 per recording
Source Control Manual and FOG Fees
FOG variance request processing fee
$250 per application
Extra strength additional sample
$310 per sample
Stormwater Management Manual Fees
Offsite management fee
$5.80 per square foot
Manufactured stormwater treatment technologies application review fee
$8,335 per application