Yes # 6 and a 10 foot ground rod or ground plate buried down 2 feet and/or to permanent moisture level . That is one thing the inspector will check for sure . Maybe take a picture before you bury it .Oh yes of course ..... bonded to the water meter pipe for sure ... only problem is that they used cloth covered 14 gauge 2 wire .... and because its a service upgrade we have to involve Toronto Hydro
Which means permits ... inspectors and the current ground would never pass inspection... here in Ontario the code states that # 6 wire is to be used and because I dont want to break my finished ceiling to get to the meter .... I decided to dig to China
And btw ... I love staying at Holiday Inns