Yes but the fueling station are growing with the commercial use.
Some of the fleet usage like garbage trucks are adding a public refuel lane. After they build the system to fuel their own, there is not a great cost to add a public access pump. It becomes a secondary source of revenue.
Some refueling stations have CNG contaminated with water and compressor oil. The high pressure filters cannot stop the vaporized oil and water so it blows by and get dumped into the regulator. At least you hope it stops there and not the injectors.