Installation of latrines and their usage is which level of prevention

Installation of latrines and their usage is which level of prevention

Comes under health promotion, so primordial prevention i guess

is it not primary because sanitation comes under primary right?

a lil bit confused between the two…can be primary coz already risk factors(flies) are present which can transmit infection if latrines are not used. Tag faculty…he would be in a better position to help