Scientific and engineering software and services since 1982.

BJSoftware has been designing on-lot septic systems in Pennsylvania using its proprietary software since 1982. read more...

Do you want BJSoftware to design a septic system for you?

• Download a septic system design request form
• Pay for a septic system design on-line

Are you a sewage professional and want to use Sewers software to design septic systems yourself?

• Questions frequently asked about Sewers software
• Apply to use Sewers software