light, heating and water (utilities)
Refers collectively to the three basic household utilities: electricity (light), gas/heating, and water. Often used in contexts like utility bills or living costs.
光熱水費は毎月の大きな出費です。
Utility bills (for light, heating, and water) are a big monthly expense.
このアパートは家賃に光熱水費が含まれています。
In this apartment, utility costs are included in the rent.
水道代 is specifically the water bill, whereas 光熱水 covers all three utilities together.
utility costs (electricity, gas, water)
Compound of 光 (light, i.e., electricity), 熱 (heat, i.e., gas/heating), and 水 (water).