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Update 19: 120-inch Water Transmission Main Break

FOR IMMEDIATE RELEASE                                                                        10:00 a.m.

September 19, 2022




  • Flushing and disinfection process of the 120-inch water transmission main is ongoing
  • Due to the size and length of the pipe, the amount of water and the technical nature of the work, the process is taking longer than anticipated
  • GLWA now estimates a return to normal operations will take 6-16 days longer than originally thought (October 5)


DETROIT – The Great Lakes Water Authority (GLWA) is providing an update on the August 13 break to the 120-inch water transmission main that distributes finished drinking water from its Lake Huron Water Treatment Facility to communities in the northern part of GLWA’s drinking water service area.

While the flushing and disinfection of the 120-inch transmission main has been ongoing, due to the size and length of the pipe, as well as the technical nature of the process, GLWA is now expecting that it will take an additional six to 16 days to return the main to normal operations (October 5).

“We want to thank everyone for their patience as we navigate this situation together,” said Suzanne R. Coffey, P.E., Chief Executive Officer, GLWA. “We know that extending the timeframe to return the transmission system back normal operations will further inconvenience all of the communities and their residents, but it is necessary for us to ensure that we complete this repair in a way that safeguards the public health and the system.”

GLWA will share more information as it becomes available, as well as photos of progress being made at the repair site.


About the Great Lakes Water Authority (GLWA)

The Great Lakes Water Authority (GLWA) is the provider-of-choice for drinking water services to nearly 40 percent, and efficient and effective wastewater services to nearly 30 percent, of Michigan’s population. With the Great Lakes as source water, GLWA is uniquely positioned to provide those it serves with water of unquestionable quality. GLWA also has the capacity to extend its services beyond its 88 member partner communities. As part of its commitment to water affordability, the Authority offers a Water Residential Assistance Program to assist low-income households in participating member communities throughout the system. GLWA’s board includes one representative each from Oakland, Macomb, and Wayne counties, two representatives from the city of Detroit, and one appointed by the Michigan governor to represent member partner communities outside of the tri-county area.



Investor Relations

The Great Lakes Water Authority is committed to the highest level of transparency for our partners, investors, employees and other stakeholders. This page contains information specifically of interest to investors.

For more information, please see the Finances page. Key operational information is found in the CEO’s Report.

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GLWA receives ratings upgrades

The Great Lakes Water Authority (GLWA) received positive ratings actions from all three ratings agencies – S&P Global Ratings (S&P), Moody’s Investors Service (Moody’s) and Fitch Ratings (Fitch) in early March 2020 in anticipation of a bond refunding and new money transaction.

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Standard & Poor’s Ratings Bulletin

On April 29, 2020 Standard & Poor’s issued the following bulletin: Great Lakes Water Authority, MI Ratings Unaffected By COVID-19 Pandemic.

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GLWA Series 2020 EMMA Announcement

Notice – February 27, 2020 - The GLWA is considering refunding certain outstanding CUSIPs provided in the document below.

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Pursuant to Rule 15Ba1-1 (the “Municipal Advisor Rule”) of the Securities and Exchange Commission (the “SEC”) under the Securities Exchange Act of 1934, as amended (the “Act”), the Great Lakes Water Authority (“GLWA”) has retained an independent registered municipal advisor. GLWA is represented by and will rely on its municipal advisor Public Financial Management, Inc. to provide advice on proposals from financial services firms concerning the issuance of municipal securities.

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Master Bond Ordinance Flow of Funds

A depiction of how revenues are applied to financial commitment is presented in this easy-to-read flow chart.

Master Bond Ordinances

The GLWA Board has adopted a Master Bond ordinance (“MBO”) for both the Water System and Sewage Disposal System. The MBOs are key documents for understanding bond issuance and the pledge of revenues to repay the bonds.

City of Flint Service Agreements

In December 2017, GLWA, the city of Flint, the Genesee County Drain Commissioner’s Office (GCDC), the state of Michigan and the Karegnondi Water Authority (KWA) finalized an agreement that would allow GLWA to provide the city of Flint with source water of unquestionable quality. It also ensures there is system redundancy for GLWA’s member partners by leveraging existing public investments.

About the Great Lakes Water Authority

Find out what we’re all about – including our history, mission and some of the people who are making it happen.