Milking-center wastewater contributes a substantial amount of water to a dairy’s manure-storage structure. Yet, many producers do not reuse that water, at least according to a survey of 44 large-scale Ohio dairy operations.

The survey results show that the water used to clean the bulk tank and pipelines was not reused on 86 percent of the farms. The dairies surveyed ranged in size from 290 to 2,100 cows. On average, these farms produced 475,705 gallons of wastewater per year just from cleaning the pipelines and bulk tanks.

Interestingly, 75 percent of the respondents indicated that reducing the volume of water entering manure storage would be a benefit to their operation.