skip to main content

For questions about the Wastewater Treatment Division website, please send an e-mail message or contact us at:

King Street Center
201 S. Jackson St., Suite 500
Seattle, WA 98104-3855
Phone: 206-684-1280
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Get Directions to our office location in Seattle, Washington.

Staff Contacts

Puget Sound shoreline next to the West Point Treatment Plant, Seattle

Investing in clean water - where does your money go?

Family on Beach

Fish Ladder

Wastewater infrastructure is crucial for protecting water quality and economic vitality, and supporting jobs and growth while maintaining our region’s natural assets like beaches, lakes and rivers.

King County's wastewater utility is entirely funded by the ratepayers who invest in our programs and services through their monthly rate and capacity charge bills. We take seriously our obligation to provide the highest levels of service and accountability to our ratepayers.

Bond ratings

Standard & Poor's and Moody’s Investor Services are leading global financial firms that rate corporate stocks and municipal bonds according to risk profiles. In 2009 the firms confirmed the ratings of the Wastewater Treatment Division’s bonds, citing:

  • Strong management practices
  • Continued positive financial performance
  • Solid rate base and large service area
  • Commitment to a capital improvement plan

The Moody's rating for these sewer revenue bonds, as well as similar bonds issued in the past, remained at Aa3 while the Standard and Poor’s rating was maintained at AA+. These favorable credit ratings lower the cost of borrowing by reducing the amount of debt service, which, in turn, reduces impacts to the rate.

Financial statements

The wastewater utility undergoes an annual audit to insure that its annual financial results are fairly stated and that all covenants with the utility’s bondholders have been met. The audited financial results for 2001 through 2010 are here.

Back to top of page.

Revenues

King County’s adopted wastewater budget for 2011 includes about $288.8 million in revenue from the monthly sewer rate and about $40.2 million in revenue from the capacity charge. The 2011 budget also includes about $5.3 million from investments and about $7.8 million from other income such as fees for industrial waste, sewage removed from septic tanks and rate stabilization funds.

King County also borrows bonds to fund the cost of construction projects under its capital improvement program.

2011 Forecasted Operating Revenues ($342.1 million)

Expenditures

Of the total revenue (about $342.1 million), the Wastewater Treatment Division is budgeted to spend about $111.1 million to operate and maintain its facilities and about $231 million for planning, designing and building facilities.

In 2011, the $342.1 million in operating revenue is allocated as follows:

Treatment $206.5 million 60%
Conveyance $71.0 million 21%
Combined Sewer Overflow (CSO) Control $24.2 million 7%
Biosolids $11.9 million 4%
Other $28.4 million 8%

Uses of 2011 Planned Operating Revenues ($342.1 million)

Back to top of page.

 

2011

2012

County's wholesale monthly sewer rate

$36.10

$36.10

Monthly capacity charge

$50.45

$51.95

Ratepayer Report, April 2008
Ratepayer Report, April 2010 (Updated June 2010)

News releases

Related information

How the WTD Capital Improvement Program (CIP) is funded

The WTD CIP is funded primarily through proceeds from revenue bond sales, short-term borrowing, capacity charge revenues, and transfers from the operating fund.

The operating fund derives the majority of its revenue from monthly charges to sewer customers that are collected by WTD's component agencies.

Transfers from the operating fund to the capital program are the result of the financial policy requirement of maintaining a debt service coverage ratio greater than one (a minimum of no less than 1.15 of all debt service payments). This means the monthly sewer rate is set such that operating revenues will exceed debt service and operating expenses by an amount equal to at least 15 percent of the total debt service expense. This buffer reduces risk to bond holders and at the end of the year provides WTD with funds to reduce the amount of borrowing necessary to finance the capital program.