SEPTIC MAINTENANCE GUIDE
Do You Need Septic Tank Additives?
Most homeowners don’t need a monthly septic additive. A functioning septic tank already has microorganisms that help break down waste. The EPA does not recommend routine bacterial or chemical additives for household septic systems. Sludge and scum still build up and need to be pumped out. EPA septic tank additives fact sheet · Ohio septic maintenance guidance
What is a septic additive?
A septic additive is a product sold to change how a septic system works. Some products contain bacteria, yeast, or enzymes and are marketed to help break down waste. Others use chemicals to address specific problems, such as roots in a pipe.
Bacteria are living microorganisms. In a septic tank, bacteria naturally present in household wastewater help break down some of the organic material. Much of that activity happens without oxygen.
Enzymes are usually proteins that speed up chemical reactions. Bacteria make enzymes that help cut larger molecules in food and waste into smaller pieces the bacteria can use. Different enzymes act on different materials. Some break down fats, while others act on proteins or starches.
That natural breakdown is only part of what happens in a tank. Heavier solids settle as sludge, and lighter material floats as scum. Even when the bacteria are doing their job, some material remains and builds up. That’s why a tank still needs inspection and pumping when the solids get too high. EPA septic tank additives fact sheet · EPA guide to how septic systems work
When might a treatment help?
Recurring roots in a pipe are one example. Roots can work their way through cracks or poorly sealed joints in the pipe from the house to the tank or in piping that carries wastewater toward the drainfield. As they grow, they can restrict flow and eventually cause a backup. If a camera inspection confirms roots, a professional can assess whether the line needs clearing or repair and whether a labeled treatment could help manage regrowth afterward. Copper sulfate root-control label · Root control and wastewater guidance
Slow drains or a backup can have other causes. A clogged effluent filter needs inspection and cleaning. A tank with excess sludge needs pumping. A damaged pipe or failing drainfield needs its own diagnosis. Those problems can look similar from inside the house, so find the cause before choosing a treatment. EPA guidance on septic system problems
What about copper sulfate root killers?
Copper sulfate is a contact root killer. It acts on roots the product reaches. Some products are labeled for specific uses in sewer lines, septic tanks, or drainfield piping. Check the exact label and local requirements before use. The location matters. A label may cover the line from the house to the tank, while treatment beyond the tank can require a different approach. Much of the copper sulfate introduced upstream can settle in the tank before reaching the drainfield lines. Copper sulfate root-control label
Will it kill my tree or grass? The label explains that nearby trees and shrubs are normally unaffected when only a small part of the root system comes into contact with the treatment. That is not a guarantee for every tree, lawn, or application. Keep treatment limited to the labeled location. Existing root masses may still need to be removed, and roots can return if the opening remains. Copper sulfate root-control label · Extension guidance on roots in septic systems
Why proper use of copper sulfate matters
Copper sulfate is a pesticide used for targeted root control. Before using it, confirm that roots are causing the problem. Read the label on the exact product to make sure it covers the part of your system that needs treatment. Follow its directions for where to apply it, how much to use, how often it can be used, and what protective equipment to wear. A treatment intended for the pipe from your house to the tank may never reach the drainfield because much of the copper can settle in the tank. Copper sulfate product label
What can go wrong?
- It can temporarily slow the activity of bacteria in the tank. Those bacteria help break down waste.
- It can corrode metal drains. The label warns against applying the product through sinks or tubs.
- It can harm fish and other aquatic life. Runoff can carry copper into nearby water, and repeated applications can contribute to copper buildup. Copper sulfate product label
Even when treatment kills the roots it contacts, a root mass may still block the pipe, and roots can grow back through an unrepaired joint or crack. If the line is already blocked or the problem keeps returning, have it inspected to find out whether it needs clearing or repair. Extension guidance on roots in septic systems
What’s worth doing to prevent problems?
Keep up with inspections and pumping, have the effluent filter checked and cleaned, and keep grease and wipes out of the drains. Keep trees and shrubs with intrusive roots away from the system. If roots keep returning in the same pipe, ask about repairing the entry point. A targeted treatment may have a role after roots are confirmed. Routine dosing is unnecessary for a system that is working properly. EPA guide to caring for your septic system · Understanding Your Septic Effluent Filter
Not sure what’s causing the problem? Call Moore’s Septic Services at 740-415-7760. Tell us what you’re seeing, and we’ll help you decide what to check next.