Who oversees septic systems in Arkansas
Outside the city sewer system, many homes around Fayetteville use onsite wastewater (septic) systems. The Arkansas Department of Health's Onsite Wastewater program, working with Environmental Health Specialists in each local health unit, reviews permit applications for septic systems under 1,500 gallons per day, which covers ordinary homes. A new system or a replacement drain field goes through that permit process. If you're buying a rural property, ask the seller for the permit and any records of the system's design, and ask the local health unit what it has on file.
Ozark ground and karst
The Arkansas Ozarks include the Springfield Plateau, which is underlain by Boone Formation limestone. That formation holds most of the karst features in the Ozark Plateaus region, including abundant solution and collapse sinkholes. Karst and shallow rock matter for septic systems because wastewater needs enough soil to be treated before it reaches rock or groundwater. Where soil is thin, a conventional drain field may not work, and an alternative system may be required. A site evaluation typically includes digging soil pits to find the depth to rock and any restrictive layers. Ask the designer what they found and why they chose the system they did.
Heavy rain and saturated drain fields
NOAA lists a 100-year rainfall rate of 3.7 inches per hour for Fayetteville's Drake Field. After a heavy rain, a drain field can saturate, and the system may drain slowly or back up for a few days. If that happens only after big storms, it may be a drainage issue: downspouts or uphill runoff aimed at the field. Ask the septic company whether diverting surface water away from the field would help before you pay for a new one. Signs of a failing system include soggy ground or strong odors over the field in dry weather, sewage backups, and lush green stripes over the lines.
Wells and septic on the same property
Many rural properties have both a well and a septic system. Keep track of where each one is, and keep vehicles, livestock and new construction off the tank and field. The Arkansas Department of Health notes that plumbers can work up to the wellhead but may not break the well seal; pump replacement takes a water well contractor. If you suspect contamination of your well, ask the local health unit about water testing.
Pumping and maintenance
Most household septic tanks need pumping every few years, depending on tank size and household use. When the tank is pumped, ask the company to check the baffles and the effluent filter if you have one, and to note the sludge and scum levels. Keep a record of each service. Avoid flushing wipes, grease and harsh chemicals, and spread out laundry loads.
Before you hire
Ask whether the company designs, installs or only pumps, and for any new work, who prepares the permit application. Get a written scope and price, and ask what happens if they find rock or poor soil once digging starts.