Septic Tank Pumping in Hixson, TN
Hixson is split: the annexed part runs on Chattanooga’s sewer, while Middle Valley and the roads north of it depend on WWTA lines or septic tanks. We connect Hixson-area homeowners with independent local septic pumping, inspection and repair companies for free, no-obligation quotes.
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Ranch houses, split-levels and original tanks
Settled around 1821 by John and Elendar Hixson, the community was annexed into Chattanooga and grew up around Northgate Mall (1972), Big Ridge and Greenway Farms on North Chickamauga Creek. The ZIP code 37343 figures (ACS 2024 5-year) count 45,101 residents and 18,097 occupied homes with a median year built of 1983; 29.8% of units date from 2000 or later and 76.0% are owner-occupied.
North of the city line, Middle Valley is older and more uniform: 12,187 people, a median year built of 1980, 49.0% of homes built 1970–99, and 83.7% owner-occupied. Where those houses sit beyond a sewer line, the concrete tank in the yard is usually the original, now 30 to 55 years old.
Sewer, creeks and soils in Hixson
The sewer picture follows the city line. Annexed Hixson drains to Chattanooga’s interceptor system and the Moccasin Bend plant. Middle Valley, Lakesite and Falling Water are WWTA territory where lines exist and septic where they do not; Lakesite is a WWTA member municipality, and the Falling Water CDP (median year built 1997, 89.9% owner-occupied) is the newest pocket. Nobody publishes parcel-level coverage, so the first question on any quote request is which side of that line your house is on.
North Chickamauga Creek meanders through Soddy-Daisy, Middle Valley and Hixson before entering the Tennessee River near Chickamauga Dam (1940). The City of Chattanooga lists pathogens as a water-quality issue in that watershed. The valley floor is limestone residuum, and it floods: the March 1973 St. Patrick’s Day flood, 7.50 inches in three days, forced evacuations in the Valleybrook and Adams Road areas of Hixson. December through March is Chattanooga’s wettest season, when drain fields in clay get the least chance to dry.
Services Hixson homeowners ask about most
- Pumping an original tank. On a 1970s–80s house the question is less “how full” than “how are the baffles.” See septic tank pumping; a 1,000-gallon tank typically runs $225–$400, plus locating if the lid is buried.
- Septic inspection on a purchase. A septic inspection (typically $100–$200; $250–$1,175 with a camera) is the only look a buyer gets.
- Baffles, lids and risers. Concrete parts wear out on older tanks; septic repair companies replace them (baffle typically $300–$900; riser $300–$600).
- Aging drain fields. An inspection, not a guess, determines whether a 40-year-old field needs work; see drain field repair.
Typical national ranges from Fixr (2025) and HomeAdvisor (2026) — estimates, not quotes. Full table on the cost guide.
Ask any Hixson pumper for its TDEC Septic Tank Pumping Contractor permit (Rule 0400-48-01-.20) and Hamilton County pumper license, and ask where the septage goes; haulers discharge at the City of Chattanooga hauled-waste facility under a $100-per-vehicle annual permit. Repairs need a TDEC installer permit (Rule .19) plus a county installer license and the owner’s $40 county repair permit. Verify names on the TDEC DataViewer or the county’s 2026 list. This is general information, not legal advice.
Hixson septic questions
Is my Hixson home on city sewer or septic?
Annexed Hixson is on the City of Chattanooga’s interceptor system, treated at Moccasin Bend. North of the city line, Middle Valley, Lakesite and Falling Water are served by WWTA where lines exist and by septic where they do not, and no public map shows coverage parcel by parcel. If no sewer charge appears on a utility bill, call WWTA at (423) 209-7842 before assuming.
How often should an original 1980s Hixson septic tank be pumped?
Tennessee has no required interval. The EPA guideline is pumping every three to five years and an inspection at least every three. A tank installed with a 1970s or 1980s house has been in service 40 to 50 years, so the pumping company should also look at the baffles and lid, which age with the concrete, and report what it found in writing.
What should a septic inspection cover when buying an older Middle Valley house?
Ask for a written report on tank condition, inlet and outlet baffles, the lid and any riser, liquid level relative to the outlet, and how the drain field accepts water. A home-inspection report must by law say it does not address sewage disposal (TCA 62-6-302), so a septic inspection is the only look you get. Hamilton County separately sells an Inspection Letter for $105.
Nearby areas
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