Questions › Category: Civil Engineering › The septic tank should be cleaned at regular interval but should not exceed 0 Vote Up Vote Down VideRime Staff asked 5 years ago The septic tank should be cleaned at regular interval but should not exceed a) 5 year b) 1 year c) 6 months d) 3 year Environmental Engineering Part 2 Share this Now with Friends: Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram More Related