A large share of the rental housing in Goochland, Powhatan, New Kent, and rural Hanover and Chesterfield is not connected to public water or sewer. Those properties run on a private well and an onsite septic system, and both are the owner’s responsibility, both are expensive to replace, and both fail in ways that are entirely preventable.
Owners who move from city properties to county properties are frequently unprepared for this. It is not difficult — but it is different, and the cost of learning by experience is high.
Quick Answer
Septic tanks generally need pumping every three to five years depending on tank size and household usage, and private wells should be tested at least annually for bacteria and nitrates. Both systems are the landlord’s responsibility to maintain; tenants are responsible for using them properly. Virginia regulates onsite sewage systems and private wells through the Virginia Department of Health, and alternative onsite sewage systems carry mandatory operation, maintenance, and reporting requirements that conventional systems do not.
How a Septic System Works
Understanding the mechanism explains every maintenance rule that follows.
Wastewater leaves the house and enters a septic tank, where it separates: solids settle into a sludge layer at the bottom, grease and lighter material float as scum on top, and relatively clear liquid occupies the middle. Only that middle layer should flow out to the drainfield, where it disperses into the soil and is treated by soil bacteria as it percolates down.
Two consequences follow:
- The tank must be pumped periodically, because sludge and scum accumulate and never leave on their own. If they build up far enough, solids carry over into the drainfield.
- Solids in the drainfield are catastrophic. They clog the soil pores, and once a drainfield is clogged it generally cannot be cleaned — it has to be replaced, which is the most expensive event in the whole system’s life.
Nearly all septic maintenance is really about protecting the drainfield. That is the asset.
Conventional vs. Alternative Systems
This distinction matters enormously for an owner’s obligations and costs, and it is the thing most often missed at purchase.
| Conventional system | Alternative onsite sewage system (AOSS) | |
|---|---|---|
| How it works | Tank plus gravity drainfield | Additional treatment components, often pumps and controls |
| Where used | Sites with suitable soil and space | Sites with poor soil, high water table, or space constraints |
| Moving parts | Generally none | Pumps, controls, alarms |
| Ongoing obligations | Periodic pumping and inspection | Required operation and maintenance by a licensed operator, with reporting |
| Annual cost | Lower | Meaningfully higher |
| Power dependent | Usually no | Often yes |
Virginia requires alternative onsite sewage systems to be operated and maintained under a formal regime, including visits by a licensed operator and reporting to the health department. If you buy a county property with an AOSS and do not know it, you inherit an ongoing compliance obligation and an annual cost you have not budgeted.
Ask before you buy: what type of system, when was it installed, what are the current maintenance requirements, and is it in compliance? Health department records are the authoritative source.
Septic Maintenance Schedule
- Pump every three to five years for a typical household, adjusted for tank size and occupancy. A four-person household on a small tank needs it more often than a couple on a large one.
- Inspect at the same visit — baffles, tank condition, and sludge and scum levels.
- Keep records. Pumping dates, inspection notes, and any repairs. This matters at sale and at claim time.
- Locate and map the tank, lids, and drainfield, and keep the diagram with your property file. Finding a buried lid costs money every time.
- Pump at turnover if you are unsure of history. It is cheap relative to the risk.
- Service AOSS components on the required schedule with a licensed operator.
What Destroys a Septic System
Put these in the lease and go through them at move-in:
- Wipes. Including anything labeled flushable, which is a marketing claim rather than an engineering one. Wipes are the single most common cause of avoidable septic and pump failures.
- Grease and cooking oil down the drain
- Feminine hygiene products, dental floss, cat litter, paper towels, cotton swabs
- Harsh chemicals, paint, solvents, which kill the bacteria doing the treatment
- Excessive garbage disposal use — disposals substantially increase solids loading
- Heavy simultaneous water use, which pushes liquid through before solids can settle
- Driving or parking on the drainfield, which compacts soil and crushes pipe
- Planting trees near the drainfield — roots seek water and find it
- Directing downspouts or sump discharge onto the drainfield, which saturates it
A single tenant conversation at move-in prevents most of these. Most people have simply never lived on septic and do not know.
Warning Signs
Train residents to report immediately: slow drains throughout the house, gurgling, sewage odors indoors or outside, wet or unusually green patches over the drainfield, backups, or an alarm sounding on an AOSS. Any of these is urgent, not routine.
Private Wells
The other half of a county property, and the one with health implications.
Test at least annually for total coliform bacteria and nitrates at minimum. Test more comprehensively at purchase and at turnover, and after any flooding, nearby construction, or change in water appearance, taste, or smell.
Worth testing for in this region, depending on circumstances:
- Bacteria — total coliform and E. coli
- Nitrates and nitrites, particularly relevant where there are infants in the household
- pH and hardness
- Iron and manganese, common in local groundwater and responsible for staining
- Hydrogen sulfide, the rotten-egg odor
- Lead, especially with older plumbing
- Radon in water, in areas of elevated potential
- Arsenic and other parameters where local conditions warrant
Virginia Cooperative Extension runs household water quality programs offering affordable testing for private well owners, and the EPA’s private well resources explain what results mean. Commercial labs are the other route.
Well maintenance basics: keep the wellhead above grade with an intact, sealed cap; keep the area around it clear and graded away; keep contaminants — fuel, fertilizer, chemicals, animal waste — well away; and have the pump and pressure tank inspected periodically. Our guide to hard water in Central Virginia rentals covers treatment where testing shows it is warranted.
One important interaction: a water softener discharges brine into the septic system during regeneration. Views differ on the impact and some system designs are more sensitive than others. Discuss it with a licensed septic professional before installing one.
Landlord and Tenant Responsibilities
| Item | Typically responsible |
|---|---|
| Septic pumping and inspection | Landlord |
| Drainfield repair or replacement | Landlord |
| AOSS operation, maintenance, reporting | Landlord |
| Well testing | Landlord |
| Pump, pressure tank, wellhead | Landlord |
| Water treatment equipment | Landlord |
| Softener salt | Negotiable — specify in the lease |
| Not flushing prohibited items | Tenant |
| Not parking on the drainfield | Tenant |
| Reasonable water usage | Tenant |
| Reporting odors, backups, wet spots, alarms | Tenant |
Write the tenant items into the lease explicitly. A generic lease drafted for a city property says nothing about drainfields, and “the tenant should have known” is not a repair budget.
Diligence Before You Buy a County Property
- Identify the system type and pull the health department records for permits, installation, and any repair history.
- Have the septic system inspected by a qualified inspector — not just pumped. Inspection and pumping are different services.
- Test the well comprehensively, and test flow rate as well as quality. A well that produces poor flow is a serious problem.
- Locate the drainfield and any reserve area. A property without a viable reserve area for a replacement drainfield carries real risk.
- Confirm AOSS obligations and their annual cost if applicable.
- Budget replacement. Drainfield replacement is a major capital item — treat it as a reserve line, not a surprise. See our guide to capital reserve planning.
- Check flood mapping for properties near waterways, since saturation affects drainfield performance.
Remember Virginia’s access rules for scheduled service: at least 72 hours’ notice for routine maintenance a tenant did not request, performed within 14 days, with the notice stating the last possible date.
Protecting the Drainfield: The Details That Matter
Since drainfield replacement is the largest cost in the system, a few specifics are worth more attention than they usually get.
Water volume matters as much as what goes down the drain. A septic system treats wastewater by giving solids time to settle and liquid time to percolate. Push too much water through too quickly and both processes are compromised. Practical measures: fix running toilets and dripping faucets promptly, spread laundry across the week rather than doing six loads on Saturday, and consider high-efficiency fixtures at turnover. A single running toilet can add hundreds of gallons a day and overwhelm a system.
Keep surface water away. Downspouts, sump discharge, and driveway runoff directed onto or near the drainfield saturate the soil and stop it accepting effluent. This is a common and entirely avoidable cause of failure. Walk the property during heavy rain and see where water actually goes.
Protect the surface. Grass over a drainfield is ideal — it transpires moisture and the roots are shallow. What you do not want is vehicles, trailers, sheds, above-ground pools, patios, or trees. Compaction crushes distribution pipe and destroys soil structure, and neither recovers.
Mark it. Genuinely useful and almost never done. Place discreet markers at the drainfield corners so a contractor, a delivery driver, or a resident with a trailer does not park on it. A dozen markers costs almost nothing.
Watch the grass. Unusually lush or fast-growing grass over the drainfield is often the first visible sign of a problem, appearing well before odors or backups. Train residents to mention it.
Frequently Asked Questions
How often should a septic tank be pumped?
Generally every three to five years for a typical household, adjusted for tank size and occupancy. Pump at turnover if the history is unknown.
Who is responsible for septic maintenance in a rental?
The landlord, as the system is part of the property. Tenants are responsible for proper use — not flushing prohibited items, avoiding the drainfield, and reporting problems.
Are flushable wipes safe for septic systems?
No. Despite the label, they do not break down adequately and are among the most common causes of septic and pump failures.
How often should well water be tested?
At least annually for bacteria and nitrates, more comprehensively at purchase and turnover, and after flooding, nearby construction, or any change in taste, odor, or appearance.
What is an alternative onsite sewage system?
A system with additional treatment components beyond a conventional tank and gravity drainfield, used where soil or site conditions require it. In Virginia these carry mandatory operation, maintenance, and reporting obligations with a licensed operator.
Can a water softener damage a septic system?
Traditional softeners discharge brine during regeneration into the septic system. Opinions vary on the impact and some designs are more sensitive — consult a licensed septic professional before installing.
What are the signs of septic failure?
Slow drains throughout the house, gurgling, sewage odors, wet or unusually green patches over the drainfield, backups, or an AOSS alarm. Treat any of these as urgent.
Which Richmond-area counties commonly have well and septic?
Goochland, Powhatan, New Kent, and rural parts of Hanover and Chesterfield. Service varies within counties, so confirm for the specific property.
How much does drainfield replacement cost?
It is the most expensive event in a septic system’s life and varies widely with site conditions and system type. Get local quotes and carry it as a reserve line rather than assuming it will not happen.
County Properties, Managed Properly
Well and septic properties need a different maintenance calendar than city rentals. Mission Realty Property Management handles scheduling, vendor coordination, testing, and resident education for owners across Richmond, Henrico, Chesterfield, Hanover, Goochland, and Powhatan.
- Learn about our property management services
- Explore year-round maintenance planning
- See our owner resources
- Get a free rental analysis
- Or contact our team
This article is general guidance. Well and septic work should be performed by qualified, licensed professionals, and requirements are set by the Virginia Department of Health and your local health district.
