The water company, which employs more than 5,500 people, has set up the events management services framework to cover a range of key events, including its annual general meeting.
Other events include its presentation of financial results and could also cover its long service awards, investors’ day and people managers’ conference.
Severn Trent Water’s new Star awards – an employee recognition event – will take place in July with around 200 staff, said the company’s senior category specialist Zane De Silva.
Work overall will include sourcing venues, supporting communications and marketing, and management of the physical event.
Organisation of accommodation storage and production of materials and event dinners may also be required.
Severn Trent Water covers an area stretching from the Humber Estuary to the Bristol Channel, and mid-Wales to the East Midlands.
The agencies have been appointed to the framework following a six-month process, which began with an initial tender notice in December.
De Silva told C&IT: "Both Crown and Logistik emerged as clear winners in terms of quality and added value, following a structured, open and transparent tender evaluation process.
"Also both suppliers identified that they have the right skill set and culture to look at a wider Severn Trent Water event strategy in the future as well as provide and measure ROI."