Webinar: Decentralized Wastewater Resources for Tribes

In this webinar recording you’ll learn how to access our clearinghouse of information specifically for wastewater and water operators on WaterOperator.org. You will be shown how to access links to over 15,000 free, publicly available resources, a nationwide calendar, and much more. This webinar was focused specifically on resources that relate to decentralized wastewater for tribes.

The webinar will answer questions such as:

• What is WaterOperator.org?
• What topics does the website cover?
• What onsite wastewater resources are available?
• How to find the Tribal Contact Manager?
• What resources are available for tribal personnel about decentralized wastewater?

Below you’ll find a recording of the training, held in September 2023.

Septic System Contamination Risks

Can a septic system contaminate a well?

Have you ever thought about where the water goes when you flush a toilet? If you have a septic system, this question may be more important than you think. Whether it is the largest advanced wastewater treatment plant in the world or the septic system in your back yard, all wastewater systems need regular maintenance. This will not only extend the life of your system, but it will also help prevent it from potentially contaminating the surface water and groundwater.

How does a septic system contaminate the surface water and groundwater?

Water from your toilets, showers, and other appliances contains harmful bacteria, viruses, and nutrients that could make you sick if it were to enter your well without being properly treated first. Maintenance issues like a full or cracked septic tank or a plugged drainfield can cause untreated wastewater to enter the surface water or groundwater.  
According to the United States Environmental Protection Agency (EPA), the most serious documented problems involve contamination of surface waters and ground water with disease-causing pathogens and nitrates.

Let’s take a peek at a conventional septic system and see how contamination can occur:

Your House:

• Most of the wastewater will generate from the kitchen and bathroom. Watch what you put down your drains. 
• Remember the three P’s: poop, pee, and (toilet) paper. Those are the only things that should be flushed down a toilet. 
• Avoid flushing other chemicals or medications down the drain or toilet as they could contaminate your well. 

Septic Tank: 

• Wastewater exits the home through a pipe and enters the septic tank which is buried and watertight.
• The solids settle at the bottom forming sludge, while fats, oils, and grease float to the top and form scum. Sludge is broken down by microorganisms that also destroy some of the contaminants in the wastewater. 
• If a tank is leaking, contaminated wastewater will exit the tank before it is treated. A septic tank needs serviced and pumped on a regular basis to ensure it is working properly.

Drainfield: 

• In your yard, a series of shallow trenches were placed to create the drainfield. The partially treated wastewater flows from the septic tank into the drainfield and slowly filters down through the soil until it reaches the groundwater.  
• Overloading your drainfield with too much water or having it clogged with solids will cause sewage to surface in your yard or even back into your house.

Treatment in the Soil: 

• Most bacteria, viruses, and some nutrients are removed when the wastewater filters through the soil.
• Soil cannot remove all medicines, cleaning products, and other harmful chemicals, so they pose the risk of entering the groundwater. 
• Wastewater that surfaces in the yard may contaminate your drinking water through an unsecured cap or cracks in the well casing.

Groundwater: 

• Groundwater is water that is beneath the Earth’s surface and is held in the soil or in the pores and crevices of rocks. 
• Any contaminants that remain after leaving the septic system may seep into the groundwater. 
• The biggest risk for a well to become contaminated is if it is in the path of groundwater flow beneath a septic system.

Further Resources:

• Septic Systems and Drinking Water | Diagram & Table from EPA
• Understand Your Pump Septic System | 3D model from TPC HD
• How does a Septic System Work? | Video from SEFC

RCAP’s Onsite/ Decentralized Program

RCAP (Rural Community Assistance Partnership) has an onsite/decentralized program that provides training, technical assistance, and financial resources to assist individual homeowners, neighborhoods and entire communities that rely on inadequate septic systems for their waste disposal. 

This program is mostly funded by U.S. EPA through the Rural Treatment Works and National Priority Area 2 grants. RCAP can offer hands-on training with community members, sanitarians, and any professionals who work with onsite systems as well as technical assistance. RCAP has been participating in the Biden administration’s Closing America’s Wastewater Access Gap Community Initiative in six of the 11 pilot communities located in persistent poverty/ disadvantaged areas.

Recently, we spoke with Sarah Buck, RCAP’s Chief Programs Officer, and she provided more information on this valuable resource for anyone working with onsite/decentralized wastewater systems. 

How does this program allow RCAP to help people with onsite/decentralized systems?

There are many ways that this program can help!

• With technical assistance providers, we can help set up a responsible management entity (RME) for decentralized systems.
• We’re able to do mapping activities to map septic systems in a community.
• We can look at areas with high concentrations of septic systems that pose environmental & health risks and help them review all of their options including interconnecting them or assisting with setting up a publicly owned water treatment works or decentralized system.
• We can help find funding to fund these types of projects in disadvantaged communities.

What are the eligible areas?

• Training and technical assistance generally is for communities of 10,000 or less in all 50 states and the US Territories including on Tribal lands/for Tribal septic owners.

Is there financial assistance available?

• Most of RCAP’s regional partners participate in the USDA Decentralized and Well Revolver Fund which provides funding that well and septic owners can use for replacements or updates.

How to apply for assistance? 

• Go to RCAP’s website and fill out the “Get Assistance” Form which will go to someone at the national office. They will then send that form to a regional partner near you to set up a technical assistance consultation.
• Find your local provider on RCAP’s website and contact them directly.
• Fill out U.S. EPA’s Water Technical Assistance Request Form and be assigned a provider that way.

Who are the partners that are assisting with this program?

• RCAP & their 6 Regional Partners
  • Rural Community Assistance Corporation (RCAC) – The Western RCAP
    • Serving Alaska, Arizona, California, Colorado, Hawaii, Idaho, Nevada, New Mexico, Oregon, Utah, and Washington
  • RCAP Solutions (RSOL) – The Northeastern and Caribbean RCAP
    • Serving all six New England States, New York, New Jersey, Pennsylvania, Puerto Rico, and the U.S. Virgin Islands
  • Midwest Assistance Program (MAP) – The Midwest RCAP
    • Serving Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, South Dakota, and Wyoming
  • Southeast Rural Community Assistance Partnership (SERCAP) – The Southeastern RCAP
    • Serving Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, and Virginia
  • Communities Unlimited (CU) – The Southern RCAP
    • Serving Alabama, Arkansas, Louisiana, Mississippi, Oklahoma, Tennessee, and Texas
  • Great Lakes Community Action Partnership (GLCAP) – The Great Lakes RCAP
    • Serving Illinois, Indiana, Kentucky, Michigan, Ohio, West Virginia, and Wisconsin
• National Onsite Wastewater Recycling Association (NOWRA)
• WaterOperator.org
• Inter Tribal Council of Arizona (ITCA)
• Moonshot Missions (a new national EFC)

Further Resources?

• Sign up for A Drop of Knowledge and Rural Matters to receive updates on work RCAP is doing
• RCAP hosts multiple webinars a year dedicated to onsite/decentralized topics | View Archive
• New Onsite Wastewater Treatment System User Guide created in collaboration with NOWRA | View PDF
• Developing a new Septic Assessment Tool in collaboration with WaterOperator.org that will be piloted fall 2023 and will be available as a fillable PDF online

How Did You Support SepticSmart Week?

The United States Environmental Protection Agency (U.S. EPA) hosted the 11th annual SepticSmart Week from September 18-22, 2023. Many water industry professionals took to social media to share U.S. EPA's helpful tips with septic system owners in their communities.

1. Think at the Sink! What goes down the drain has a big impact on your septic system. Fats, grease, and solids can clog a system’s pipes and drainfield.
2. Don’t Overload the Commode! A toilet is not a trash can. Disposable diapers and wipes, feminine hygiene products, coffee grounds, cigarette butts, and cat litter can damage a septic system.
3. Don’t Strain Your Drain! Use water efficiently and stagger use of water-based appliances. Too much water use at once can overload a system that hasn’t been pumped recently.
4. Shield Your Field! Tree and shrub roots, cars, and livestock can damage your septic drainfield.
5. Keep It Clean! Contamination can occur when a septic system leaks due to improper maintenance. Be sure your drinking water is safe to drink by testing it regularly.
6. Protect It and Inspect It! Regular septic system maintenance can save homeowners thousands of dollars in repairs and protect public health.

This year's SepticSmart Week creative challenge was in partnership with Youth Engaged 4 Change and asked students ages 11-19 what “septic systems of the future” might look like. Participants were encouraged to demonstrate their thoughts on how future septic systems could sustainably safeguard community health and protect waterways. The top three winners received $100 gift cards and included Tyler’s Diagram showing a new and improved drain field regulator, Karolina’s Poem “Future Septic Systems”, and Ahana’s Essay “Septic Systems of the Future.”

FOG in Sewer Systems vs. Septic Systems

The use of FOG (fats, oils, and grease) in the average household typically cannot be avoided. Once these substances are rinsed or flushed down the drain, they have the potential to build up and create blockages within the pipes of the home. When these clogs form they can cause a variety of problems like: raw sewage backing up into the property, basement flooding, raw sewage overflowing into public spaces like parks, streets, rivers, etc., and increased maintenance costs to clean and repair damaged pipes.

It is important to make sure that community members are educated on ways to avoid the damage that can be done when these substances are not handled properly. Here are some ways you can educate the public on FOG:

Dos and Don’ts 

• Consider providing a dos and don’ts list, pamphlet, or flyer to community members outlining best practices for handling FOG substances. The Texas Commission on Environmental Quality (TCEQ) created a poster that does this well.
• For outreach to non-community water systems, specifically restaurants, there are resources that can be provided like this FOG Toolkit from the National Restaurant Association’s Conserve Program. You can also collaborate with your local health department on educational materials to distribute.

Recycle

• If your area has a Household Hazardous Waste program that accepts used cooking oil, provide the contact information to community members or consider hosting a collection event. For an example of how to provide this resource, TCEQ has a webpage with more information. If there is no program available, contact your local Solid Waste Authority for specifics on their recycling program.

SepticSmart

• For homeowners that use septic systems, provide information about EPA’s SepticSmart program. Not only does this program include insights on how FOG impacts a septic system, but it also provides valuable information on general septic maintenance.

Videos

• Nobody forgets the first time they see a "fatberg" and it can be helpful to trigger awareness and a potential behavior change. There are plenty of videos online so choose one that best represents your system to share with utility customers.

Providing resources like the ones above will help to ensure your ratepayers understand the importance of these best practices.
 

Using Reed Beds for Sludge Treatment

The use of reed beds in both central and decentralized wastewater treatment systems can offer a low cost and energy efficient opportunity to process sludge. Originally developed in Germany, the practice was brought to the United States in the 1980s. Under this technology, a variety of marsh grass, also known as Phragmites, is planted in reed beds built with concrete walls and lined with an impermeable layer to protect groundwater. TPO magazine suggests using a concrete bottom because PVC liner can be easily damaged during maintenance. The beds themselves contain a porous, finely aggregated media such as sand or recycled glass (pg. 12). This media allows the reeds to grow and excess liquid to pass through an underdrain system connected to the head of the plant for recycling. Risers can help distribute and load the sludge.

After the reeds have been established during a period of roughly three months, sludge can be loaded into the beds every three weeks. As the plants’ extensive root structure absorbs sludge moisture, water will be released through leaves and into the atmosphere via evapotranspiration. The microbes found in the root rhizome will help the sludge continue to break down. During the winter months when the reeds are dormant, the freeze-thaw cycle will allow liquid to easily separate from sludge to continue dewatering. When spring arrives, the reeds will return to their active growing cycle.

According to TPO Magazine, reed beds can adequately manage facilities that treat up to two million gallons per day provided that the required land is available. The reeds themselves can handle climates that experience several weeks of freezing temperatures during the winter. Before temperatures drop too low, operators will typically burn off the reeds in the fall. Alternatively, the reeds can be composted or disposed in a landfill. After approximately 8 years, the solids must be removed. At this time, the beds will be taken out of service in the summer and given an additional 90 days to dry out. Once the sludge is removed, the reeds will need to be re-established. A presentation by the Constructed Wetland Group provides a detailed overview of how to perform maintenance on reed beds.

While this technology is low maintenance and energy efficient, there are still pros and cons. As an advantage, reed beds can help to remove heavy metals from sludge. This should be considered during reed harvesting. As a drawback, constructing new beds requires significant capital costs, however utilities may be able to convert existing sand pits or drying beds to reduce costs. TPO Magazine notes that unpleasant odors can emerge during the spring when winter ice melts. Many scientists also worry that wastewater facilities using non-native grasses can encourage the establishment of invasive species. Phragmites spread predominantly through their underground rhizomes, laterally growing stems with roots. Furthermore, when non-native grasses escape into a new area, they can easily take over since their native competitors aren’t present. Facilities should practice careful harvesting and monitor the integrity of their bed structures to ensure containment. Despite these drawbacks, reed bed systems can be a successful and efficient form of sludge treatment even in comparison to conventional treatment methods.

Featured Video: Replacing the Power Cord on a Sewage Pump

Submersible sewage pumps can be used for a variety of applications spanning the needs of residential homes to wastewater treatment plants depending on their size and design. A submersible pump is made up of a submerged motor filled with air or oil. Various impellers designs determine what sized solids the pump can handle.

In this week’s featured video, Chris with R.C. Worst & Co. demonstrates how to replace the power cord on a submersible sewage pump. This particular pump is designed for septic tanks and the sewage handling of commercial and residential applications. While working on the pump, he offers some tips and tricks that can help you to save money during repairs and prevent additional damage. As a bonus he discovers some unexpected factory damage and demonstrates how to repair broken wiring. If you need to fix a pump from your own system, remember that this sort of repair work should only be made by operators with the appropriate training. You can find hands-on pump training in your area by visiting our operator event calendar.

Featured Videos: Small Communities Benefit From Shared Resources

The Small Communities Environmental Infrastructure Group assists small Ohio communities in finding resources to help solve their infrastructure and funding problems. These two videos feature water and sewer district officials and staff discussing the benefits of participating in SCEIG regional partnerships in order to better serve their communities. 

Featured Videos: Onsite Wastewater Treatment Systems: Regulations, Installation, Maintenance and Inspection

Nationwide, and in Colorado, improperly functioning onsite wastewater treatment systems pose a risk to drinking water supplies. These videos from Colorado Rural Water Association inform system owners about the regulations associated with onsite systems, how the systems function, and most importantly, how to maintain and inspect individual systems to protect water quality and the environment. 

Interested in getting under the hood and seeing how a septic system works from a homeowners perspective? While every system is different, they all have the same general parts and pieces. Learn about what goes where and why from Carla Ostberg of All Service Septic & CBO Inc. in this 6-minute video from Colorado Rural Water.