<pre class="wp-block-preformatted"><strong>Septic Tank </strong>A septic tank is a large tank designed to store sewage waste. It usually built underground. The septic tank is a buried, water-tight container usually made of concrete, fiberglass, or polyethylene. Its job is to hold the waste water long enough to allow solids to settle down to the bottom forming sludge, while the oil and grease floats to the top as scum </pre> <figure class="wp-block-image size-full"><img src="https://www.primacyebooks.com/wp-content/uploads/2022/03/tank.jpg" alt="" class="wp-image-12801"/></figure> <pre class="wp-block-preformatted"><strong>Soak Away Pit <div class="sign-up-notice-after-excerpt-two" style="background-color:powderblue;"> You are viewing an excerpt of this lesson. Subscribing to the subject will give you access to the following: <ul> <li>The complete lesson note and evaluation questions for this topic</li> <li>The complete lessons for the subject and class (First Term, Second Term & Third Term)</li> <li>Media-rich, interactive and gamified content</li> <li>End-of-lesson objective questions with detailed explanations to force mastery of content</li> <li>Simulated termly preparatory exams</li> <li>Discussion boards on all lessons and subjects</li> <li>Guaranteed learning</li> <li>Win great prizes for topping the <a href="https://www.primacyebooks.com">Primacy Ebooks</a></li> </ul> </div> <div class="sensei-message info"></div>