L’infiltration vient de la canalisation.

The water seepage comes from the fixed water line.

Breakdown of L’infiltration vient de la canalisation.

• de: from
• venir: to come
• l’infiltration: the water seepage
• la canalisation: the fixed water line

Questions & Answers about L’infiltration vient de la canalisation.

Why is it L’infiltration and not La infiltration?

Because French usually elides le or la before a word that begins with a vowel or a silent h.

• la infiltration becomes l’infiltration
• This is similar to:
  • l’eau instead of la eau
  • l’école instead of la école

So L’infiltration is just the normal shortened form of la infiltration.

What does vient de mean here?

Here, vient de means comes from.

So:

• L’infiltration vient de la canalisation. = The seepage/leak is coming from the pipe/plumbing.

Be careful: venir de + infinitive can also mean has just done something:

• Je viens de manger = I have just eaten

But that is a different structure. In your sentence, de la canalisation is a noun phrase, so vient de means comes from.

Why is it de la canalisation and not du canalisation?