Field and empirical evidence indicate that yes, cattle being given the electronically enriched water will normally produce more milk and for a longer duration than cattle that are not placed on the same water. The cattle initially undergo an apparent detoxification phase in which their own systems are cleaned; this in turn allows for more efficient milk production.
The reason greater milk production is evident is probably related to the greater efficiency with which the system is working in the cattle, as a result of greater energy availability and utilization by the system, more and more energy can be dedicated toward the basic genetic predisposition of the cattle, which is for milk production. Energy that would ordinarily be diverted for detoxification, excessive maintenance, disease and related immunity response can now be better utilized for milk production.