[RetroTechie]

Not really, these are rare.

It's part of the north (mid / east of Groningen province), that has an earthquake problem.

These are mostly minor (like ~2 on Richter scale), but frequent. Causing structural damage in many (mostly older) houses, and people losing sleep over safety, house value & damage compensation. Imagine feeling minor quakes weekly, and seeing new cracks appear in the walls of your house every couple of months.

Cause of these quakes is man-made: natural gas extraction from Slochteren field. This field is slowly being closed, and subsoil will settle eventually. But that process is measured in decades. So quakes will continue for years.

Most houses affected by this, were built before Slochteren gasfield was even discovered, and earthquakes in this area didn't exist. So those houses' owners can't be blaimed for the problems they're having. Nor were those houses built with earthquakes in mind.

[flagged24]

That's a valid point (induced quakes in otherwise stable area). Still a 3.6 is equivalent to a heavy lorry passing by (I've experienced this myself). Something a house should be able to handle without problem. The 3.6 quake was the worst quake ever for that region. Most are well below this range as you mentioned.