تسرب المياه في الحمام.

Arabic often allows short noun phrases like this, especially in headlines, notes, maintenance reports, and labels.

So this is closer to water leakage in the bathroom than to a full conversational sentence.

If you want a full sentence in Modern Standard Arabic, you could say:

• هناك تسرّب للمياه في الحمام = There is a water leak in the bathroom.
• يوجد تسرّب مياه في الحمام = There is water leakage in the bathroom.

Here, تسرب is a noun, specifically a verbal noun (maṣdar), meaning leakage, leaking, or seepage.

The related verb is:

• تسرّبَ = to leak / to seep

Arabic often uses this kind of verbal noun where English might use a noun like leakage or a phrase like leaking.

It is an iḍāfa construction, often called a construct phrase.

Breakdown:

• تسرب = leakage
• المياه = the water / water

Together, the phrase means:

• water leakage
• more literally, the leakage of the water

This is a very common Arabic structure.

Because it is the first noun in an iḍāfa.

In Arabic, the first part of an iḍāfa:

• does not take الـ
• does not take tanwīn

So تسرب المياه is correct.

You would not say:

• التسرب المياه

And if you pronounce full case endings, it would be:

• تَسَرُّبُ المِيَاهِ

not a form with tanwīn on تسرب.

Both relate to water, but they are used a bit differently.

• ماء = the basic singular word water
• مياه = formally a plural form, but very often used in Modern Standard Arabic to mean water in a general or technical sense

In formal contexts like plumbing, buildings, utilities, maintenance, and reports, تسرّب المياه is a very common expression.

So:

• تسرّب المياه sounds very natural in this context
• تسرّب الماء is understandable, but less typical in this kind of formal phrasing

Yes, formally it is a broken plural related to ماء.

But in real usage, especially in Modern Standard Arabic, it often functions like a collective word meaning simply water. So you should not automatically translate it as waters in English.

In this sentence, المياه just means water.

Because الحمام here means the bathroom.

So:

• في الحمام = in the bathroom
• في حمام = in a bathroom

Arabic often uses the definite article when the place is known, understood, or contextually specific, just as English often says the bathroom.

Also, after في, the noun is grammatically in the genitive case, although short vowels are usually not written in ordinary text.

A fully vowelled version is:

تَسَرُّبُ المِيَاهِ فِي الحَمَّامِ

A helpful transliteration is:

tasarrubu al-miyāhi fī al-ḥammāmi

In connected reading, you may also hear:

tasarrubu l-miyāhi fī l-ḥammāmi

A few pronunciation notes:

• تسرّب has a doubled r sound
• مياه is roughly mi-yāh
• حمّام has a doubled m
• ḥ in ḥammām is a stronger, deeper sound than English h
• In الحمام, the l of الـ is pronounced, because ح is a moon letter

Yes. حمام can also mean pigeons or doves in other contexts.

But in تسرب المياه في الحمام, the context makes bathroom the obvious meaning.

As written, it sounds most natural as a short written phrase, such as:

• a maintenance note
• a complaint heading
• a report title
• a label on a form

In normal conversation, a speaker would often use a fuller sentence, such as:

• هناك تسرّب للمياه في الحمام
• يوجد تسرّب مياه في الحمام

So the given phrase is natural, but it feels more like a title or report label than a complete everyday spoken sentence.