SepticBossPro Blog — Route Planning

Why Tank Size Records Make Septic Routes More Accurate

Ask a septic dispatcher what they wish they knew before the truck left the shop, and the answer is usually the same: how big is that tank, really? Tank size drives load planning, stop length, dump timing, and even pricing. When it is missing or wrong, every route built on it is a guess. This follows Routing Multiple Septic Trucks Without Overlap and makes the case for treating tank size as the most important field in your system.

One Number, Many Decisions

Tank size touches almost every routing decision. It tells you how many gallons a stop will add to the truck, which tells you where the truck fills, which tells you where the dump run goes, which shapes the order of every stop after it. It also hints at stop length, since a larger tank takes longer to pump than a small one.

When a dispatcher knows the tank sizes on a route, the whole day can be planned with confidence. When half of them are blank, the plan is really just a list of addresses and a hope that the truck has enough room.

Where Tank Size Records Come From

There are a few good sources. Permit records from your county or health department often list the installed tank size. Previous pumping tickets, if you kept them, record what was pulled. Inspection reports describe the system. And the driver who pumped it last can usually tell you. SepticBossPro stores tank size in gallons on each property record, so once you find the number, it lives with the property and shows up whenever that property is scheduled.

When you take on a new customer, ask for what they know. Many homeowners have paperwork from when they bought the house, and it often includes the tank size.

Fixing Records From the Field

The most reliable source is the truck itself. When a driver pumps a tank and the record is missing or wrong, that is the moment to fix it. Drivers can add notes and photos in the crew mobile app, and the office can update the property afterward. Make it a rule: no tank gets pumped without the record being checked. Over a season or two, that habit fills in your whole customer list.

It also catches the surprises, like a second compartment, a separate pump tank, or a tank that turned out to be far larger than the homeowner thought.

Drain field size belongs in the same habit. It is not a routing number the way tank size is, but it matters for inspections and repairs, and the driver who sees the field is the best person to note it.

Tank Size and Truck Capacity Together

Accurate tank sizes are what make load planning possible. Add up the tank sizes on a route, compare them to what the truck can carry, and you know immediately whether the day needs one dump run or two. Without accurate sizes, you only find out when the truck fills earlier than expected and the driver has to choose between leaving a job half-done or driving to dump in the middle of a cluster of stops.

It works in the other direction too. A route that looks too light may actually be fine once you see the tank sizes, because two or three large systems can fill a truck on their own. Without the numbers, dispatchers tend to overload some days and underload others without realizing it.

Beyond the Truck: Pricing and Customer Trust

Many companies price pump-outs partly by tank size, so accurate records keep invoices consistent. They also help when a customer questions a bill. Being able to say "your tank is recorded at 1,250 gallons, and here is the photo from the last visit" is a much easier conversation than guessing. Accurate records make you look like the company that knows its customers, because you do.

Records also help when a customer calls for a quote. If the tank size is already on file from a previous visit, the office can give a confident price on the phone instead of promising to find out later.

Make Tank Size Non-Negotiable

Treat tank size as required, not optional. Gather it from permits, paperwork, and past tickets, correct it from the field every time a driver pumps, and use it every time you plan a route. SepticBossPro keeps tank size alongside lid depth, drain field size, and tank location notes on every property. See how those records feed route planning on the septic routing software page.

The payoff compounds. Every accurate record makes every future route that includes that customer a little more reliable, without anyone doing extra work.

The best routing tool in the world cannot plan a load around a number it does not have. Get the gallons right and the routes follow.