Local residents and commuters who frequently use Talbot Ave. and Woodrow Ave. can expect temporary and minor changes in traffic patterns and parking availability in the coming weeks, the Boston Water and Sewer Commission (BWSC) said as it launches work to improve the water, sewer, and drainage systems of Dorchester.

The BWSC and its contractors are expecting that the construction projects, set to take place in a number of neighborhoods across Dorchester, will cause disruptions to local traffic, parking, and water systems and bering along with them much noise and dust.

Depending on the complexity of the projects, some may even take up to two years to complete.

The BWSC noted that customers in the impacted areas will receive multiple notices about the upcoming projects as they are set to begin. ““We recognize that utility work can be frustrating to neighborhoods, which is why we engage in a lot of outreach to residents, community groups and local media,” the agency said in a statement. “The important thing to realize is that this work is part of ongoing improvements to our systems so our customers can continue to enjoy the best water, sewer, and environmental services we can deliver.”

The BWSC has already notified the customers in the neighborhoods of Talbot Ave., from Bernard St. to Whitfield St., and Woodrow Ave., from Ballou Ave. to Wollaston Terrace, that they will begin construction on each project in the next few weeks.

In the Talbot Ave. notification letter, sent on Aug. 3, the BWSC explained that they will be cleaning the sewage system on the street, but no digging is expected, and in the case that excavation is necessary, contractors will install temporary paving. In The Woodrow Ave. notification letter, sent on Aug. 16, the BWSC said that its contractors anticipate having to replace and rehabilitate the existing sewage system after first cleaning the sewer and investigating active sewer connections. This work will be conducted in phases, the agency said, with an anticipated delay between phases.

This part of the project may also require that the water systems of local residents’ buildings be internally inspected and dye tested. As this project will require digging, temporary paving will be installed by the contractors, with the Commission set to perform permanent pavement restoration by the spring of 2018, with sidewalks to be fully restored within six weeks of the project’s completion.

During the construction phases of both projects, Boston Police officers will be on site to facilitate traffic and pedestrian access to the affected areas.