How Much Should a Septic Company Spend on Marketing

Plan on 7 to 12 percent of revenue. The U.S. Small Business Administration's benchmark puts B2C service businesses at 11.8 percent, and septic companies that already have reviews and word of mouth working for them usually come in under that. A company doing $600,000 a year should expect to spend $3,500 to $6,000 a month once the number is built correctly, not guessed at. That's the honest starting answer. The rest of this piece is how to build your own number instead of borrowing mine, because your average ticket, your margin, and how many trucks you can put on the road this month are not the same as the company down the road.

I run marketing for septic and contractor businesses for a living, so I'll say the uncomfortable part early: a lot of what gets sold as an "industry standard" budget in this space is made up. Percentages of revenue get quoted with no source, and monthly ranges get invented to look precise. You deserve a number you can defend, not one that sounds confident on a sales call.

The Real Number

The SBA's guide on marketing budgets, which summarizes a 2019 Web Strategies survey, breaks spending down by business type. It's dated, and it's still the closest thing to an official benchmark that exists for this question. B2B product companies spend 6.3 percent of revenue. B2B services companies spend 6.9 percent. B2C product companies spend 9.6 percent. B2C services companies, the bucket a septic pumping or installation business actually falls into, spend 11.8 percent.

Notice the septic bar isn't the highest in that chart by accident. You're selling to a homeowner, not a business with a purchasing department, and homeowners only think about you when something is already wrong. That's a harder sell than a recurring B2B contract, which is exactly why B2C services carry the heaviest marketing load of the four.

The market itself is real, for what it's worth. More than one in five U.S. households run on a septic system rather than a municipal sewer connection, according to the EPA. You're not chasing a shrinking niche. You're chasing a large, slow-moving customer base that mostly forgets you exist until their tank backs up.

A percentage of revenue is useful as a gut check, but it's a terrible way to actually set a budget. Two companies both doing $600,000 a year could have wildly different margins, close rates, and growth goals, and a flat 9 percent tells you nothing about either one. Work the math instead. That's what the next two sections do.

Your Allowable Cost Per Booked Job

Before you pick a dollar figure, figure out the most you can pay to book one job and still come out ahead. Call this your allowable cost per booked job, or allowable CPJ. It comes from two numbers you already know off the top of your head: average ticket and gross margin.

Multiply the two together and you get gross profit per job. A $400 pump-out at 45 percent margin throws off $180 in gross profit. Now decide how much of that $180 you're willing to spend to acquire the job in the first place. Most local service businesses land somewhere between 20 and 40 percent of the gross profit dollar. At 30 percent, your allowable CPJ on that single pump-out is $54.

Here's the uncomfortable part. LocaliQ's 2026 search advertising benchmarks put the average cost per lead for home services at $90.92, with an average cost per click of $8.33. If you're only counting the first transaction, a $90 lead can't clear a $54 allowable cost. On paper, Google Ads loses money on a single pump-out.

It doesn't lose money once you count what actually happens next: the same customer calls you again in three to five years, and a decent number of them refer a neighbor. If a pumping customer is worth $180 in gross profit three times over ten years, plus one referral worth another $180, your real gross profit per acquired customer is closer to $720, not $180. Run your allowable CPJ off that number and $90 stops looking scary. This is the single biggest mistake I see septic owners make when they do this math themselves: they price a lead against one job instead of the relationship.

Build Your Own Budget Number

Now put it together. Budget = target new jobs per month x allowable cost per booked job. Then sanity check the result against the revenue percentages from the first section. If your number is wildly outside 7 to 12 percent of revenue, one of your assumptions is off, and that's worth catching before you spend a dollar.

Here's a worked example with the assumptions stated plainly so you can swap in your own numbers.

That last row is the sanity check. $3,240 a month lands at 7.1 percent of a $550,000 annual revenue base, which sits at the low end of the 7 to 12 percent band and well under the SBA's 11.8 percent B2C services figure. If your own math had spit out 25 percent of revenue, that's a sign your target job count is too aggressive for your current lead cost, not that you should just spend more. Learn more about tracking whether the spend is actually working in our guide on measuring septic marketing ROI.

What $1,500, $5,000, and $10,000 Actually Buys

Budgets get abstract fast. Here's what each level actually buys in channel terms, and just as important, what it doesn't.

$1,500 a month. This mostly covers the free-to-cheap foundation: Google Business Profile management, review requests, and basic website hosting. If anything's left, it's a thin Local Services Ads test since you pay per lead there instead of per click. It will not buy enough Google Ads volume to generate reliable data in a competitive metro; at roughly $90 a lead, $1,500 is 16 leads a month before you've spent anything on SEO or your website. Read our Local Services Ads management page for what a lean LSA setup looks like.

$5,000 a month. Now you can run a real Google Ads campaign alongside LSAs, plus start some SEO or content work. At the 2026 blended averages, that's somewhere around 45 to 55 leads a month split across Ads and LSAs, assuming your landing page actually converts. It still won't rank you on page one organically in under six months. SEO takes time no matter how much you throw at it early; see our local SEO guide for a realistic timeline.

$10,000 a month. This is where you can run Ads, LSAs, and an ongoing SEO/content program at the same time, plus proper call tracking so you know which channel is actually producing. It's enough to support opening a second service area or adding a truck route. What it will not do is fix a 15 percent close rate. If your sales process is the bottleneck, more leads just means more missed opportunities at a higher cost.

Fix This Before You Spend a Dollar on Ads

There are three situations where the right move is to spend nothing on advertising and fix the underlying problem instead.

Your phone doesn't get answered. If calls go to voicemail during business hours, or your office is slow to call back, every paid lead you buy is money spent to generate a missed opportunity. Fix staffing or call routing first.

You don't have reviews, or your recent ones are bad. Almost everyone checks reviews before they call.

That figure comes from BrightLocal's 2026 survey. If you're sending paid traffic to a Google Business Profile with eight reviews and a 3.9 rating, you're paying to have a stranger read your worst reviews right before they decide not to call. Build the review flow first; our reviews guide covers the ask scripts that actually work.

Your website is broken. Slow load times, no clear phone number above the fold, or a contact form that doesn't actually send anywhere. Run through our web design checklist or the full website must-haves checklist before you turn on a single campaign. Advertising to a broken funnel is the fastest way to burn a budget and conclude, wrongly, that "marketing doesn't work for septic."

What Agencies Actually Charge

I sell this, so I can afford to be straight about the parts that annoy owners.

Management fees for a company this size typically run $1,000 to $3,000 a month on top of your ad spend. That's separate money. Ad spend is what Google or Meta charges for the clicks and leads; the management fee is what you pay a person to run the account. Some agencies blur that line by marking up ad spend without telling you, which means you have no idea what's actually going to your ads versus their margin. Ask directly: is my ad spend billed at cost, or is there a markup built in?

Contract length is the other place to pay attention. Twelve-month contracts are common, and some are reasonable if the agency is doing SEO work that genuinely takes months to show up. But a 12-month lock on a Google Ads account that could show results in 60 to 90 days is a red flag, not a standard practice. Ask for a shorter initial term, or at minimum a defined exit point tied to a performance check-in.

Last thing: find out who owns the account. If your Google Ads and Local Services accounts live under the agency's manager account with no path to transfer ownership to you, leaving them means starting from zero, no matter how the results were going. That single question, asked before you sign, tells you more about an agency's confidence in their own work than anything in the proposal. For a fuller breakdown of when DIY makes more sense than any agency, see hiring an agency vs. DIY.

When to Scale Up, When to Hold

Increase your budget when you're hitting your lead goals consistently, your cost per lead sits at or below what your allowable CPJ math says you can afford, and you actually have crew capacity to take on the extra jobs. Scale in steps of 20 to 30 percent, not all at once, so you can tell whether the increase is still producing at the same efficiency.

Hold or cut when leads aren't converting to booked jobs, when your cost per lead has drifted above your allowable number, or when you can't tell which channel is producing anything because you don't have tracking in place. That last one is more common than it should be. If you can't answer "where did this job come from" for every new customer this month, fix that before you touch the budget at all; our guide on tracking where your leads come from walks through the setup.

More leads on top of a broken close rate or no tracking doesn't fix anything. It just makes the problem more expensive.

Frequently Asked Questions