As the other replies stated water ingress must be prevented before the difficulty can be removed and prevented , we run a microimage oil lab, wear debris etc, rttech.com.au
The OHS area that concerns us with water in oil samples is infection from the contaminated oil samples if allowed to gain contact with open cuts or skin. Because our samples are from all types of plants the bacteria contamination can cause very agressive infections to technicians when handling samples,
Carefully check the sample by smell and if it smells like a dead horse watch out and if in a food factory let production know immediately to prevent any possible manufactured product contamination.