Backwater rhymes with:
breakwater, drinkwater, pinkwater, breakwater, bridgewater, bywater, clearwater, coldwater, deepwater, drinkwater, fitswater, fitzwater, floodwater, freshwater, goldwater, headwater, pinkwater, rainwater, sidewater, stillwater, tidewater, underwater, wastewater, whitewater
Backwater sounds like:
babysitter, backdoor, bacteria, basketry, bastyr, baxter, bester, bigotry, bistro, bookstore, booster, boster, bostra, boughter, buchter, buster, bustier