Nonsense!!
There are plenty of quality caterers, and i am sure they have separate teams - especially the bigger ones. Firstly decide what food you wish to serve to your business partners/executives. Once this is sorted, you can then choose the wine, champagne and spirits to serve alongside the meal. Dependent on the food and partnered wine, you can then choose a mineral water which matches up to both gastronomically.
Remember, the spicier the meal, the fuller bodied the red wine, and crisper the white. Mineral Waters with high magnesium are better suited to full bodied red wines.
Goodluck