The repairs we see most in Hays County
Baffles and tees ($250–$600). The inlet and outlet baffles keep solids in the tank. Concrete baffles in older Kyle-area tanks erode and drop off — and once the outlet baffle is gone, solids flow straight to the drain field. Caught at pumping time, it's a cheap fix.
Aerobic pumps, floats, and sprayers ($150–$1,200). The workhorses of every ATU subdivision system. Stuck floats and clogged spray heads are service-call cheap; a failed effluent pump or compressor runs $450–$1,200 installed. If your alarm is on, it's usually one of these.
Crushed or separated lines ($500–$2,500). Our clay soil swings hard between drought-shrink and downpour-swell, which snaps rigid old pipe and separates joints — a wet stripe between house and tank after a dry summer is the classic sign. Trucks or trailers parked over lines finish the job faster.
Lids and risers ($150–$400). Cracked concrete lids are a safety issue — children and pets have died falling into septic tanks. If your lids are buried, adding risers while a crew is already on site saves every future visit's digging fee.
Repair or replace?
The honest framework: if the tank is structurally sound and the drain field still takes water, repair. If effluent is surfacing over the field, the field has likely biomatted or saturated — sometimes recoverable, often not, and that's when you're pricing a new field or an aerobic conversion ($8,000–$20,000+ with Hays County permitting). Nobody should quote a replacement without first pumping the tank and watching whether the field recovers; be suspicious of anyone who skips that step.
Permits matter here
In Hays County, repairs that alter the system (new tank, new field lines, converting to aerobic) need a permit and inspection through Development Services; like-for-like component swaps generally don't. Unpermitted structural work surfaces at sale time and can force you to redo it. A local crew that pulls Hays County permits weekly makes this painless.
Common questions
Why is there standing water over my drain field?
Either the field is overloaded (often because a full tank has been passing solids) or it has biomatted and stopped percolating. Step one is pumping the tank and reducing water use for a week or two — if the field doesn't recover, get a repair assessment. Don't ignore it; sewage on the surface is a health hazard and the county treats it as one.
My aerobic sprinklers run at 2am. Is something broken?
No — spray systems are typically set to distribute treated water overnight. What's NOT normal: spraying during rain-soaked conditions constantly, gray or smelly spray, or the alarm accompanying it. Those warrant a service call.
How much does it cost to replace a septic pump?
In the Kyle area, an effluent or aerobic pump replacement typically runs $450–$1,200 installed depending on the pump and tank configuration. Floats and switches are cheaper ($150–$350).
Do septic repairs in Hays County need a permit?
Structural changes do — new tanks, new drain field lines, aerobic conversions — through Hays County Development Services. Same-part component replacements (pumps, baffles, lids, floats) generally don't. Licensed local installers handle the paperwork when it's required.
Get a fast quote
Tell us what's going on. A local septic pro will call you back — usually the same day, often within the hour.
Got it — you'll get a call back shortly. If this is an active overflow, stop running water in the meantime.