noun
Purification Tank Act
A specific Japanese law regulating the installation, maintenance, and inspection of johkasou (onsite wastewater treatment tanks).
浄化槽法に基づき、毎年の保守点検が義務付けられている。
Under the Purification Tank Act, annual maintenance inspections are mandatory.
Compound of 浄化槽 (johkasou, 'septic tank/onsite wastewater treatment tank') + 法 (law).