NGL Energy Partners' (NGL) management made some sizable purchases before the oil price war and the coronavirus challenges. Mr. Market did not realize the recession-resistant nature of some of those businesses.
Current produced water transportation and disposal volumes on its systems have increased in March to a record 1.9 million barrels per day, including approximately 1.5 million barrels per day in the Delaware Basin"
Source: NGL Energy Partners March 19, 2020, Earnings Press Release
The water business was part of the purchases made before the latest market downturn. That business will probably continue