Drainage for raised paver patio

Aurora Tee (Zone 6a)
August 19, 2019

We had a raised paver patio installed this summer with a boulder retaining wall. There is water coming from the side of the wall in a slow, steady pace. At first I thought there might be a leak in the sprinkler system that sits at grade level, but even after turning off the breaker valve and shutting the system off, we are still seeing murky, dirty water coming from the side. The sprinkler guys are going to run a compressor through the system and check the pressure but they are also asking me to contact the paver installer to get his input.

No french drain was installed under the patio. I did question when we were in the design phase and the installer said it would not be necessary. Now I am very worried that one should have been.

I am trying not to panic. Any input would be helpful.

Thank you.

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