Nepenthes jamban is endemic to the Barisan Mountains that line the western side of Sumatra.
It is known only from the type locality, south of Padang Sidempuan in North Sumatra.
The species has an altitudinal distribution of 1800–2100 m above sea level.

Nepenthes jamban grows in upper montane mossy forest amongst summit scrub vegetation.
Unlike the closely related N. jacquelineae, it only occurs terrestrially.

In the wild, N. jamban occurs sympatrically with N. bongso, N. dubia, N. gymnamphora, and N. lingulata.
A natural hybrid with N. lingulata has been recorded.
Nepenthes jamban is endemic to the Barisan Mountains that line the western side of Sumatra. It is known only from the type locality, south of Padang Sidempuan in North Sumatra. The species has an altitudinal distribution of 1800–2100 m above sea level.
Nepenthes jamban grows in upper montane mossy forest amongst summit scrub vegetation. Unlike the closely related N. jacquelineae, it only occurs terrestrially.
In the wild, N. jamban occurs sympatrically with N. bongso, N. dubia, N. gymnamphora, and N. lingulata. A natural hybrid with N. lingulata has been recorded.
Nepenthes jamban