(503) 355-2732 (office)
Sewer Services
Sewer Service - Quarterly
We Accept Credit or Debit Card payments that can be made through our QuickBooks payment process online. Instructions are on your invoice that is Emailed out to you. We also accept checks, money orders, e-checks, and cash.
The cost for sewer services is $149.94 per quarter (starting July 2023). We email or mail billings on the 1st day of each month of the quarter: January, April, July and October. Payment is due by the 25th of the month the bill is sent.
For customers who are on a fixed income or have set-up auto payments through their bank monthly - we will continue to honor those payments at $49.98 a month.
Sewer Service Fee – Resolution #22/23-9 – There will be a 2% increase in the Sewer Fees for the Fiscal Year 2023/2024 (July 1, 2023 – Jun 30, 2024). The last increase in rates was in FY 09/10 - July 2009.

Sewer Service - Annual
We Accept Credit or Debit Card payments that can be made through our QuickBooks payment process online. Instructions are on your invoice that is Emailed out to you. We also accept checks, money orders, e-checks, and cash.
The cost of sewer service annually is $599.76. For making an annual payment, Twin Rocks Sanitary District offers a 5% Discount. If payment is not received by the 25th of the month, the discount will be charged back to your account.
Amount due with discount is $569.77 and is billed on the yearly cycle you chose on a quarter month for your account - January, April, July or October.


Twin Rocks Sanitary District
THESE ITEMS SHOULD NEVER BE FLUSHED !
Baby wipes
Diapers
Moist Towelettes
Paper Towels
Feminine Products
Dental Floss
Toilet Cleaning Pads
Biodegradable Wipes
Bandages
Q-Tips – Cotton Swabs
Cigarette Butts
Contact Lenses
Non-Flushable items relate to hundreds of thousands of dollars in future costs to Twin Rocks Sanitary District when they are flushed down the toilet, as they shorten the lifespan of essential equipment at the wastewater treatment plant such as membrane filters, air diffusers, and pumps. The cost of these preventable problems are ultimately absorbed by rate payers, in the form of higher sewer bills.