Even if it is only big enough to wash hands and vegetables, a sink is a definite need. However, it does not need to have a 30 gallon gray water tank. The current 42 + 32 setup used on the OSK Pumas would be much better appreciated as either 1 74 gallon tank gray tank, or as a 65 + 15 setup.
Current TV:'14 F350 Lariat CrewCab, 4x4 Short Bed SRW Diesel w/ Pullrite 2700 (16K)
Current Fiver: '15 Puma 295BHSS Anniversary Edition
Past TV: '13 F150 HD Payload SCrew EB, '08 Tundra CrewMax 5.7L, '02 'Burb 5.3L, '97 Dakota 3.9L
Past Trailers: '09 Wildwood LE 27RB, '02 Palomino Yearling RL, '87 Jayco 1006dlx