No Surprises. No Upsells. Just Honest Septic Service.
"For 60+ years, Shiawassee County families have trusted us to pump their tanks, answer their questions, and give them fair prices—without the runaround."
Most Septic Companies Just Pump and Run
You're left with questions, confusion, and no idea if your system is actually healthy. Sound familiar?
No Explanation
They pump your tank and leave without telling you what they found or what it means for your system.
Hidden Costs
We state our cost upfront.
Unnecessary Upsells
Pressure to buy additives, treatments, or services you don't actually need.
No Prevention Advice
They fix today's problem but never help you prevent tomorrow's emergency.
Complete Septic Care for Your Home
From routine maintenance to emergency service, we handle every aspect of your septic system with care and expertise.
Septic Pumping
Complete tank pumping to remove accumulated solids and keep your system flowing properly.
Tank Cleaning
Thorough cleaning to remove buildup and ensure your tank operates at peak efficiency.
Tank Locating
Can't find your septic tank? We locate and dig open covers so you don't have to guess.
Grease Traps
Commercial grease trap cleaning to keep your business compliant and flowing smoothly.
The Miller Bartz Difference: We Actually Want You to Ask Questions
Most septic companies treat service calls like transactions. Get in, pump out, get paid, move on. But that's not how we've operated for the past 60 years.
We believe that when you understand your septic system, you make better decisions. You catch problems earlier. You avoid expensive emergencies. And you don't feel like you're being taken advantage of.
- We explain what we find in plain English—no jargon
- We answer every question, no matter how basic
- We teach you how to prevent future problems
- We never recommend services you don't need

Simple, Straightforward Service
No surprises, no confusion. Just honest septic service from start to finish.
Schedule Your Service
Call us at (989) 743-5055 or email to book a time that works for you. We'll confirm your appointment and answer any initial questions.
We Can Handle Everything
Our experienced team locates your tank, digs open the covers if needed, and thoroughly pumps and cleans your system.
Get Educated & Protected
We explain what we found, answer all your questions, and share tips to keep your system healthy for years to come.
60 Years of Keeping Shiawassee County Flowing
In 1964, when most people didn't think twice about their septic systems, the Miller Bartz family started something different. We believed that septic service should be more than just pumping tanks—it should be about building relationships and helping our neighbors understand their homes.
"We've always believed that educating people on their septic systems prevents future problems and emergencies. That philosophy hasn't changed in 60 years."
Three generations later, we're still a small family business with the same values: be honest, be fair, and treat every customer like a neighbor. Because in Shiawassee County, they usually are.
Proudly Serving Shiawassee County & Surrounding Areas
We're your local septic experts, serving Owosso and the surrounding communities with the same dedication we've shown for over 60 years.
Communities We Serve
Shiawassee County and surrounding areas
Don't see your area? We likely serve you too!
Call to confirm service in your areaCommon Questions, Honest Answers
We believe educated homeowners make better decisions. Here are answers to questions we hear most often.
Don't See Your Question?
Call us at (989) 743-5055. We love answering questions about septic systems—it's part of what makes us different.
How often should I pump my septic tank?
For most households, we recommend pumping every 3-5 years. However, this depends on your tank size, household size, and water usage. A family of four with a 1,000-gallon tank typically needs service every 3 years, while a couple in the same home might go 5 years.
Pro Tip: We'll tell you exactly when to schedule your next service based on what we find during your pump-out. No guessing required.
What are signs my septic system needs attention?
Watch for these warning signs: slow drains throughout your home, gurgling sounds in pipes, sewage odors near your tank or drain field, wet spots or unusually green grass over your drain field, and sewage backup in your lowest drains.
Pro Tip: If you notice any of these signs, don't wait. Early intervention is always less expensive than emergency repairs.
I don't know where my septic tank is. Can you find it?
Absolutely! Tank locating is one of our core services. We use professional equipment to find your tank, then dig open the access covers. Many homeowners don't know where their tank is—especially if they've recently purchased their home.
Pro Tip: Once we locate your tank, mark the spot with a decorative rock or garden feature so you can find it easily next time.
Do I need to be home during the service?
You don't have to be, but we recommend it. Being present allows us to show you what we find, answer your questions, and explain any recommendations. However, if you can't be there, just make sure we have clear access to your tank location.
What should I do to prepare for your visit?
Please ensure your driveway is clear of snow, low-hanging branches, and obstacles. Our trucks are large and need adequate clearance. If you know where your tank is, clearing the area above the access covers is helpful but not required—we can dig if needed.
Pro Tip: If you have pets, please secure them before we arrive. This keeps everyone safe and allows us to work efficiently.
Are septic additives worth buying?
In most cases, no. A healthy septic system has all the bacteria it needs to break down waste naturally. Many additives make big promises but don't deliver meaningful results. Some can actually harm your system or groundwater.
Pro Tip: Save your money on additives and put it toward regular pumping instead. That's what actually keeps your system healthy.
Trusted by 5,000+ Families
Don't just take our word for it. Here's what our neighbors have to say about working with us.
"They actually took the time to explain everything to me. First septic company that didn't make me feel stupid for asking questions. Will definitely use them again."
"Fair price, showed up when they said they would, and didn't try to sell me a bunch of stuff I didn't need. That's rare these days. My family has used them for 20+ years."
"New homeowner and had no idea where my septic tank was. They found it, pumped it, and taught me everything I needed to know. Couldn't ask for better service."
Before We Arrive
Our trucks are large—much bigger than a typical vehicle. To serve you efficiently and avoid damage to your property, please ensure:
- Driveway is cleared of snow and ice
- Low-hanging tree branches are trimmed back
- Vehicles, trailers, and equipment are moved
- Pets are secured before our arrival
Why this matters: Clear access means faster service, lower costs, and no risk of property damage. We appreciate your help!
Why Choose a Family Business?
There's a reason 5,000+ families have trusted us over the past 60 years. Here's what sets us apart.
Don't Wait Until It's an Emergency
Septic emergencies are messy, expensive, and completely avoidable. If you notice any of these signs, call us before a small problem becomes a big disaster.
Fair, Honest Pricing
No hidden fees. No surprise charges. No pressure to buy things you don't need.
The Miller Bartz Guarantee
We believe in earning your trust through transparency. That's why we're upfront about everything—before we even show up at your door.
Meet the Team
When you call Miller Bartz, you're not talking to a call center. You're talking to the people who actually do the work.
Joshua Crambell
Owner & Lead Technician
Continuing the Miller Bartz tradition of honest, educational septic service. Joshua believes that every homeowner deserves to understand their septic system—and he's happy to answer any question, no matter how basic.
Ready for Honest Septic Service?
Join 5,000+ Shiawassee County families who trust Miller Bartz for straightforward septic care. Call today and experience the difference 60 years of family service makes.