Yeah it's just 40+ year old glue down carpet over concrete - no pad. I used my Kirby on it once and it sounded like nacho chips afterwards, the Kirby had agitated the carpet so hard it broke the glue in places (probably not hard seeing as its so old).
If it needs a high faucet pressure I might hook it up to the utility sink. That has a threaded faucet already to accept a garden hose diameter, and it sprays out with an extreme amount of pressure.