Why does the drain keep slowing down?
A repeat clog often has a cause beyond the buildup that was cleared, such as a low spot, a defect or roots.
Edinburg, Texas 
Hydro Jetting for Recurring Clogs in Edinburg, TX
A drain that keeps slowing in Edinburg may sit on a line from the 1900s townsite or from a subdivision built after the city annexed about 2,000 acres in 2013. A drain that slows again after cleaning needs a fresh look. Note how long the improvement lasted and whether one fixture or several are affected.
What should a repeat blockage investigation cover?
EPA sewer inspection guidance says inspection can identify where grease and debris accumulate or where roots intrude into a sewer. For a house line, that means finding the cause instead of repeating the same cleaning.
How does the neighborhood shape the question?
In an older house near the square, ask about age and material. In a newer house on annexed land, ask whether an inspection shows a sag or a joint problem.
Questions about this drain problem
Is one slow fixture different from several?
Often. One slow fixture can point to a short branch line. Several affected fixtures can point farther down the line.
What helps most when I request service?
Notes on when the problem started, which fixtures are affected and what earlier cleanings changed.
Should I mention my Edinburg area when I call?
Yes. It frames the age of the housing, though the inspection of your own line matters more.
Describe what is happening. Start with a call.
Tell us about the affected drain, what you have noticed, and whether hydro jetting may suit the line.