All Clear Septic and Wastewater Services All Clear Septic and Wastewater Services has septic pumping scheduled today in North Smithfield, Cumberland, Lincoln, Foster, Glocester, Cranston, and Johnston, RI.  Septic Systems need to be pumped regularly to ensure that they continue to operate correctly. It is recommended that septic systems are pumped every three years but this can vary depending on the size of the tank, water usage, and the number of people using the system.  Changes such as children growing up can change your water usage and therefore, alter your septic pumping needs.  Teenagers will generally use more water that a preteen for example.  If you think you may need to schedule septic pumping or if you have any questions please do contact our office at 508-763-4431 or visit