下水道堵了。

The sewage pipe is obstructed.

The drains are blocked up.

Source: Tatoeba

Sentence Composition

1 下水道 xiàshuǐdào sewer
=2 堵 dǔ
  1. to block up (a road, pipe etc)
  2. to stop up (a hole)
  3. (fig.) (of a person) choked up with anxiety or stress
  4. wall (literary)
  5. (classifier for walls)
=2 堵 zhě
  1. (～河) Zhe or Du River (river in Hubei Province, China)
  2. Zhe or Du River (river in Hubei Province, China)
=3 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=3 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=3 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=3 了 liào unofficial variant of 瞭 liào