How long have you been installing septic systems around Conroe?

Decades, and all of it in Montgomery County soils. That history is the reason we can look at a lot near League Line Road and tell you early whether it wants a conventional gravity field or an aerobic unit, before a failed perc test costs you a redesign.

What size septic tank does my home need?

Tank size follows bedroom count, not square footage. A three bedroom home typically calls for a 1,000 to 1,250 gallon tank, and a four bedroom home usually steps up to 1,500 gallons. We confirm the exact size against the county code before we order.

Do I need a perc test before you install?

Yes, on any new system. The soil percolation test and profile evaluation measure how fast water drains and where the seasonal water table sits, and the county health department sizes your drainfield from those numbers. We run the test and pull the permit for you.

Concrete, poly, or fiberglass tank, which do you recommend?

It depends on the lot and the load. Concrete is the heavy, settled standard most Conroe homes get. Poly and fiberglass weigh less and resist corrosion, which helps on a tight access lot near West Davis Street. We walk you through the tradeoffs before you decide.

What if my soil will not pass a conventional system?

Tight clay and high water tables are common out toward Cut and Shoot, and that is exactly what aerobic treatment units and engineered mound systems are for. Our crews install both to NSF/ANSI Standard 40 so a hard lot still gets a permitted, code legal system.

How often should I pump the tank once it is in?

Plan on a pump out every three to five years for most households, per EPA guidance. We set the access risers at grade during install and mark them on your as built drawing, so finding the lids near your driveway on Wilson Road is never a dig.

Do you back the work if something settles later?

Every install closes with a written workmanship guarantee, and our name is on the permit with the county, not a subcontractor's. If a distribution box settles or a lateral needs evening out inside the guarantee, we come back to Conroe and make it right.

Septic Tank Installation in Conroe, TX

Septic Systems Installed Right in Conroe

Name: Grevilleapark
Address: 8499 Simonton Street, Conroe, TX, 77304, US
Telephone: (936) 479-4003

New tanks, drainfields, and full onsite systems installed by a crew with decades in Montgomery County soils. Free site visits and clear written scopes.

Call (936) 479-4003 Book a Site Visit

Decades of local installs
Permitted and inspected
Written guarantee

From the Field

Lessons from decades of septic work, shared straight from our senior installers around Montgomery County.

Septic drainfield inspection in Conroe, TX

Signs Your Drainfield Is Failing, From Decades in the Field

July 1, 2026

After decades of setting and repairing septic systems across Montgomery County, our senior installers can usually name a failing drainfield from the driveway. The system gives you warnings long before raw effluent reaches the surface, and catching those early is the difference between a small repair and a full field replacement. Here is what we tell homeowners around Conroe to watch for.

Slow Drains That Are Not the Pipe

When every drain in the house slows at once, the problem is rarely a single clog. It usually means the tank or field is not accepting flow the way it should. If a plumber has already snaked the line with no lasting fix, the trouble is likely downstream in the tank or drainfield, and that is worth a real inspection before it worsens.

Soggy Ground or Bright Green Grass

A patch of lawn that stays wet in dry weather, or grows noticeably greener over the field, is effluent surfacing where it should be soaking in. We have traced more than one failure on Wilson Road to a low spot that stayed damp for a week after the last rain had dried everywhere else. Standing water over the field is a clear call to act.

Odors Near the Tank or Field

A working system is a sealed one, so a persistent sewage smell in the yard points to effluent reaching the surface or a cracked component venting where it should not. Odor plus soggy ground together is a strong signal the field is overloaded.

Backups at the Lowest Fixture

The lowest drain in the house, often a downstairs toilet or a floor drain, backs up first when the system cannot keep up. A backup after heavy water use is an early tell that the tank is full or the field is saturated.

What to Do Next

Do not wait for the surface to break. A prompt inspection can catch a settled distribution box or an overloaded field while the repair is still small, and sometimes the fix is as simple as resetting the D-box rather than rebuilding the whole field. If the field is truly done, our drainfield installation crew can design and permit a new one to your soil, and a failing tank is often better handled through new septic system installation when the whole assembly is aging. Either way, start with a look.

Seeing any of these signs at your place near Conroe? Call Grevilleapark at (936) 479-4003 or contact us to schedule a field inspection before a small problem becomes a big dig.

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Where Our Installers Travel

We install and service septic systems across Conroe and the rural stretches of Montgomery County, from in town lots to acreage where the nearest neighbor is a quarter mile off.

Conroe, TX (77301, 77304, 77384)
Porter, TX
Willis, TX
Montgomery, TX
Cut and Shoot, TX
Splendora, TX
Magnolia, TX

Not sure we reach your road? Call (936) 479-4003 and we will tell you before you book.

Decades in local soilWe have installed systems across Montgomery County long enough to read its clays and sandy loams on sight.
Registered installersState registered onsite installers pull the permits and answer to the county health department by name.
Backed in writingEvery install closes with a written workmanship guarantee and an as built drawing for your records.
Referral drivenMost of our new jobs come from a past customer telling a neighbor, not from a sales pitch.

Grevilleapark provides septic tank installation in Conroe, TX, and has since long before half the subdivisions off League Line Road existed. Our crews handle new septic system installation, drainfield construction, septic tank replacement, aerobic treatment unit setups, perc tests, distribution box repair, and point of sale septic inspections. We size every tank from the bedroom count, set the distribution box level, and finish the job around your acreage near Longmire Road or your lot in Grand Central Park.

Experience is the whole difference in this trade. A septic system is buried, permitted, and expected to run quietly for twenty or thirty years, so the crew that digs it matters more than the brand on the tank. We have installed conventional gravity systems, chamber drainfields, and engineered mound systems across the sandy loams and tight clays that run through Montgomery County, and that history tells us where a trench will drain and where a lot needs an ATU before the county inspector ever walks it.

The team behind the backhoe is credentialed, not casual. Our lead installers hold state onsite sewage facility registrations, pull the permits under their own names with the county health department, and work to NSF/ANSI Standard 40 when advanced treatment is called for. Homeowners near West Davis Street and out toward Cut and Shoot tell us the same thing in their reviews: we showed up when we said, explained the perc results in plain language, and left the yard graded instead of rutted. Word travels on a rural road faster than any billboard.

Over the last few seasons we have set 1,250 gallon concrete tanks for new builds in Barton Creek Ranch, replaced a cracked steel tank on Wilson Road, and rebuilt a failed drainfield that had been surfacing near a home in the 77384 area. Every one of those jobs closed with a written guarantee on the workmanship, an as built drawing for the owner, and a walkthrough of the riser lids so the family knew exactly where to pump it in three to five years. That is the standard we hold, and it is why so much of our work now comes from a neighbor pointing us down the street.

Septic Work We Install and Service

One registered local crew for the tank, the drainfield, and everything the county wants inspected in between.

01New Septic System Installation: Full onsite systems for new builds and unsewered lots, tank plus distribution box plus drainfield, sized from your bedroom count and the perc rate.
02Septic Tank Replacement: We remove a cracked or collapsed tank and set a new watertight 1,000 to 1,500 gallon concrete, poly, or fiberglass unit matched to your household.
03Drainfield Installation: Gravel trench or plastic chamber leach fields laid to the perc rate so treated effluent disperses instead of surfacing in the yard.
04Aerobic Treatment Units: NSF/ANSI Standard 40 aerobic units for tight clay lots and small parcels where a conventional gravity field will not pass.
05Perc Tests and Site Evaluations: Soil percolation testing and profile evaluation that sets the field size the county health department will actually permit.
06Pumping, Inspection, and D-Box Repair: Scheduled pump outs, real estate inspections, effluent filter service, and distribution box resets that even out flow across the laterals.

Investment for a Professionally Installed System

Septic pricing turns on the soil, the system type, and the size the county requires, so the honest answer always follows a site visit and a perc test. The ranges below are typical for the Conroe area. We put the firm number in writing after we evaluate your lot, and we never quote a full system sight unseen. A short in ground surprise is far cheaper to plan for than to dig up later.

Perc Test and Site Evaluation$750 to $1,900	Septic Tank Replacement$3,500 to $8,500	Full Conventional System$3,500 to $12,500
Soil percolation testing Sizes the field the county will permit Book a site visit	New 1,000 to 1,500 gallon watertight tank Old tank pumped and removed Get a written scope	Tank, distribution box, and drainfield Permitted, inspected, and guaranteed Get a written scope

Experienced Answers to Your Questions

How long have you been installing septic systems around Conroe?: Decades, and all of it in Montgomery County soils. That history is the reason we can look at a lot near League Line Road and tell you early whether it wants a conventional gravity field or an aerobic unit, before a failed perc test costs you a redesign.
What size septic tank does my home need?: Tank size follows bedroom count, not square footage. A three bedroom home typically calls for a 1,000 to 1,250 gallon tank, and a four bedroom home usually steps up to 1,500 gallons. We confirm the exact size against the county code before we order.
Do I need a perc test before you install?: Yes, on any new system. The soil percolation test and profile evaluation measure how fast water drains and where the seasonal water table sits, and the county health department sizes your drainfield from those numbers. We run the test and pull the permit for you.
Concrete, poly, or fiberglass tank, which do you recommend?: It depends on the lot and the load. Concrete is the heavy, settled standard most Conroe homes get. Poly and fiberglass weigh less and resist corrosion, which helps on a tight access lot near West Davis Street. We walk you through the tradeoffs before you decide.
What if my soil will not pass a conventional system?: Tight clay and high water tables are common out toward Cut and Shoot, and that is exactly what aerobic treatment units and engineered mound systems are for. Our crews install both to NSF/ANSI Standard 40 so a hard lot still gets a permitted, code legal system.
How often should I pump the tank once it is in?: Plan on a pump out every three to five years for most households, per EPA guidance. We set the access risers at grade during install and mark them on your as built drawing, so finding the lids near your driveway on Wilson Road is never a dig.
Do you back the work if something settles later?: Every install closes with a written workmanship guarantee, and our name is on the permit with the county, not a subcontractor's. If a distribution box settles or a lateral needs evening out inside the guarantee, we come back to Conroe and make it right.

Meet With Our Senior Installer

Ready to move on a new system, a replacement tank, or a drainfield that keeps backing up? Our senior installer will walk your lot in person, read the soil, talk through the perc test and permit, and hand you a clear written scope with a firm number. No sales pressure, just decades of Conroe septic experience pointed at your property near 77304 or wherever your land sits in Montgomery County.

Call (936) 479-4003