Do's when maintaining your septic system By educating everyone in your household about what is and what isn’t good for septic systems, you can save a lot of money and headaches. If you’re planning an addition that adds more than 15 per cent to your home’s floor area, increases the number of bedrooms, or increases the number of plumbing fixtures, you may need to enlarge your septic system. For more information visit at qualitysepticincorporated.com. in Public bookmarkswith maintaining-your-septic-systemby 6 users