City of Flint January 14, 2022 Update: Secondary Water Pipeline

FLINT, MI — The Department of Public Works began facilitating 95/5 water increment combining/blending to the Genesee County Drain Commission (GCDC) secondary water pipeline on Monday, August 23, 2021. The process of combining the primary and secondary water sources was required to complete necessary repairs to the City’s primary water pipeline.

Due to the City’s amended timeline for Phase V, the incremental water combining/blending to 100 percent for the secondary GCDC secondary water pipeline will be delayed at least one week (end of January 2022).


• Phase V of the City’s incremental water blend to 100 percent for the secondary water supply with the Genesee County Drain Commission (GCDC) will begin on Tuesday, January 18, 2022. 

• With Phase V, construction work at Control Station #2 can begin the week of January 24, 2022. Tentatively, the construction at Control Station #2 will take one month and during this time the City will be 100 percent on the GCDC water supply.

• Construction work includes: valve replacement work, automating, and modernizing the primary water pipeline system equipment.

• When the valve repair work is complete, Flint’s water will once again flow from the primary water pipeline connection to GLWA at 95 percent and 5 percent to the secondary water pipeline connection to GCDC. This 95/5 blend is to keep the water, pipes, valves and other hardware in the secondary pipeline fresh and ready to use in an emergency.

All protocols are in adherence with the State of Michigan Safe Drinking Water Act, and the City’s agreement with its primary water supplier, GLWA, will continue to be followed.

Important reminders for residents:

• Visit for the latest updates on Flint’s water infrastructure projects. 

• Water monitoring will continue as all major infrastructure projects are completed. Monitoring results are available on the EGLE’s website at

• For water emergencies or issues with water service call (810) 766-7202 [water] and (810) 766-7079 [sewer]. These lines are monitored 24/7.

• For non-emergency questions or concerns, email [email protected] This email is monitored by DPW department staff.

• Mayor Neeley will continue to provide weekly community updates on WFLT 1420 AM and via Facebook on Saturdays.

• The City of Flint will continue to provide residents with updates on water infrastructure projects as information becomes available.

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