Septic Pumping for Rural Hallsville, MO (65255)
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- Serving Boone County homes on septic
This page is for rural homes in the Hallsville area, the farms, acreage and county roads that share the 65255 ZIP code, about 13 miles north of Columbia (straight-line, from 2024 Census place coordinates). The City of Hallsville itself is sewered: Missouri American Water has owned and run the town's wastewater system since 2022. Homes on that system don't need septic pumping. Out in the countryside, septic tanks and lagoons are the norm. If you're on one, send the short request form and we'll pass it to independent local septic professionals who work northern Boone County.
Request service with the short form on this page.
We pass your request to independent local septic professionals, and a local septic pro will contact you directly. They'll reach out as soon as they can; timing depends on their schedule. If it's an emergency, say so in the form so the contractor sees it.
Hallsville's Sewer: Owned by Missouri American Water
Hallsville's wastewater system is owned by Missouri American Water, which acquired it in February 2022. The city's utilities page confirms the arrangement. (Sources: Missouri American Water announcement, Feb. 2022; City of Hallsville.)
The treatment plant runs under Missouri Department of Natural Resources permit MO-0104990. BCRSD's 2026 area-wide plan describes it as a no-discharge system: a bar screen, a single-cell aerated lagoon, two storage basins and five center-pivot irrigation fields. Treated water is stored and irrigated rather than released to a stream. The plan lists a design population equivalent of 2,085 people, a dry-weather design flow of 197,650 gallons per day, and an actual permitted flow of 149,568 gallons per day. It also says the plant could someday connect to a force main to BCRSD's Rocky Fork treatment plant that's proposed in the district's 2025 capital plan. That's a proposal, not a project under way. Until then, the plan's recommendation is that Missouri American Water and the city keep running the plant as a no-discharge system, with BCRSD contract operations as an option if the plant needs operating help. The plant sits in HUC 12 watershed 10300102-0704 and, per the plan, doesn't discharge to any surface waterbody. (Source: BCRSD Area-Wide Wastewater Management Plan, 2026.)
The city itself handles water service. Its water ordinance requires properties to connect to the city's water facilities. That's a water rule, though, not a sewer rule, so having city water doesn't mean you have sewer.
Is the Hallsville Area "Mostly Septic"?
No. The town is on public sewer owned by Missouri American Water, so in-town homes connected to it aren't septic customers. Septic belongs to the rural parts of 65255, the farms and acreage outside the sewer system. We haven't found an official, measured count of how many 65255 homes are off sewer, so we don't give a percentage. What the public records do show is the rural pattern: BCRSD's plan lists several small, separately permitted lagoon facilities with Hallsville mailing addresses outside town, including a church, a mobile-home community and a commercial site.
County Rules for Rural Hallsville
Outside the sewer system, onsite systems fall under Boone County Resource Management, which took over enforcement of the county's 1993 ordinance in 2022. Lagoons serving more than one single-family home are permitted by the Missouri Department of Natural Resources rather than the county.
For a single-family lagoon, the county's 2022 requirements set a 500-foot setback from sinkholes, require 3 feet of separation from creviced bedrock, and say lagoons aren't generally suitable on subdivision lots under 3 acres. Suitability is decided site by site.
Claypan Country: Soils Around Hallsville
NRCS soil data (USDA NRCS Soil Data Access) for points in and around Hallsville shows a classic north-Boone mix:
- Mexico silt loam: Very deep and poorly drained, formed in loess over glacial till. The official series description places it in the Central Claypan Till Plains and classes it as a Vertic Epiaqualf, a wet soil with a dense, shrink-swell clay subsoil.
- Keswick: Very deep and somewhat poorly drained, with loess over an old weathered soil formed in till.
- Hatton: Very slowly permeable, also loess over till.
- Leonard: Very deep, poorly drained and slowly permeable.
- Marion: Has an abrupt textural change, from silty topsoil to clay, at about 11 inches in the mapped component.
NRCS rates every one of these "very limited" for septic tank absorption fields. The reasons are the same two over and over: depth to a saturated zone and slow water movement. In claypan soil, water sits on the clay layer instead of soaking through. That's why lagoons are common here and why an absorption field on this ground has to be designed for it.
Boone County's Most Common Soils
Hallsville's soils aren't unusual for the county. They're typical. Ranking soil series by mapped acreage in NRCS's Boone County survey data puts Keswick first, Mexico second and Leonard third, all claypan or till-plain soils that hold water near the surface. Weller, Menfro, Winfield, Armstrong and Hatton round out the top of the list.
Missouri's construction rule sets the vertical separation a conventional absorption field needs: generally 2 feet of suitable soil between the trench bottom and a limiting layer such as a seasonal water table. Where the Mexico or Leonard claypan holds water near the surface for part of the year, that separation is hard to reach without a lagoon, an engineered design or a raised system.
Hinkson Creek Starts Here
The City of Columbia's watershed page says Hinkson Creek, Columbia's largest watershed at about 26 miles long, begins just east of Hallsville and runs southwest through Columbia. Rural homes around Hallsville sit near the creek's headwaters, so what happens to wastewater here flows downstream through the city.
Looking After a Rural Lagoon
Boone County's homeowner guide for onsite systems (2011, archived by the City of Columbia) gives lagoon owners a short list that fits Hallsville-area farms well. Mow the berms. Keep trees cleared from around the cell. Keep the fence and gate in good repair. And keep a record of service work, the same as you would for a tank.
If the house drains to a septic tank before the lagoon, that tank holds back the solids that would otherwise build up in the cell. The same guide's general advice applies to it: pump every 3 to 5 years depending on household size, and skip the additives.
Tank Size and Pumping Around Hallsville
- Missouri minimums under 19 CSR 20-3.060: 1,000 gallons for one to three bedrooms, 1,250 for four, 1,500 for five. Older farmhouses may have smaller or nonstandard tanks.
- Tanks ahead of lagoons: Many lagoon systems have a septic tank that settles solids first. That tank still needs pumping.
- Spring access: Claypan soils stay wet, so field drives and yards can be soft for weeks. Plan pump-outs for drier stretches when you can.
- Wells: Keep tanks at least 50 feet, and absorption areas 100 feet, from a private well, per the state setback table.
More on local requirements: Boone County septic rules.
Hallsville Septic Questions
I live in the town of Hallsville. Do I need septic pumping?
Not if you're connected to the town sewer, which Missouri American Water owns. This page is for rural 65255 homes.
I have city water. Does that mean I'm on sewer?
No. The city handles water, and sewer is a separate system. Check your bills.
Why do so many homes near Hallsville use lagoons?
The claypan and till soils here are rated very limited for absorption fields because water perches on the clay.
Request service with the short form on this page.
We pass your request to independent local septic professionals, and a local septic pro will contact you directly. They'll reach out as soon as they can; timing depends on their schedule. If it's an emergency, say so in the form so the contractor sees it.
Who Regulates Septic Here
- Boone County: Boone County Resource Management has enforced the county's onsite wastewater ordinance since June 28, 2022. Its page lists a $510 permit fee for a new system or an upgrade, and a $35 "existing evaluation" fee. That evaluation is required when you add bedrooms or bathrooms to a home on septic. It isn't a home-sale inspection.
- Lagoons: single-family lagoons are under the county. Lagoons serving more than a single-family home fall under the Missouri Department of Natural Resources, per DHSS.
- Statewide: the Missouri Department of Health and Senior Services onsite program sets the construction standards in 19 CSR 20-3.060. Real-estate inspections fall under 19 CSR 20-3.070.
Rules change. Confirm with the county office.
Ready when you are
Tell us what you need and a local septic pro will reach out.