9 January 2026

Successful WJA training delivery in Greece

DERC Adviesgroep recently delivered WJA-certified water jetting training for Zisimopoulos Maintenance Services SA in Greece.

Our experienced trainer Arian van den Honaard traveled to Greece to deliver the training on location, combining theory with hands-on practice in line with WJA standards. A group of 12 professionals successfully completed the Safety Awareness, Tube and Pipe (TP) and Hydrodemolition (HD) training programs.

DERC Adviesgroep is proud to be the first non-UK training provider approved by The Water Jetting Association (WJA) to deliver official water jetting courses as a WJA registered training provider.

We congratulate all participants on achieving their certification and thank Zisimopoulos Maintenance Services SA for their trust and collaboration.

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