Central control
Head of department: Matthias Herold
Controlling plays a major role in our organization. For my department, Central Controlling, this means that we take a very close look at how your fees are spent. And with great success: for example, wastewater fees in Mainz are well below the national average when compared to other cities. Do you have any questions about our work? Then please feel free to contact us. - Matthias Herold -
Phone: (0 61 31) 97 15 - 217 / -218
Email: matthias.heroldstadt.mainzde
Most recently awarded third-party contracts
| Date | February 25, 2026 |
| Selected procedure | Direct award |
| Repair of two Nkb pumps, type 7061 | |
| Place of execution | Mainz |
| Name of the contractor: |
XYLEM Water Solutions Deutschland GmbH |
| Date | February 24, 2026 |
| Selected procedure | Restricted tender |
| Preparatory work for the construction of a battery storage facility ZKW | |
| Place of execution | Mainz |
| Name of the contractor: |
Hebau GmbH |
| Date | February 10, 2026 |
| Selected procedure | Direct award |
| Clearing fence, clearing vegetation, and exposing fence | |
| Place of execution | Mainz |
| Name of the contractor: |
Lukas und Schwarz GmbH |
| Date | February 4, 2026 |
| Selected procedure | Direct award |
| Implementation of an energy management system | |
| Place of execution | Mainz |
|
Name of contractor |
Baade MsM Solutions GmbH |
| Date | January 5, 2026 |
| Procedure selected | Direct award |
| Supply of a Weiler Commodor lathe | |
| Place of execution | Mainz |
|
Name of the contractor |
Kaiser Machine Tools |