From routine pumping to full system installations, A.J. Fenwick's Septic Service LLC delivers honest, dependable work backed by real experience — and a commitment to your community.
⭐ 5-Star Rated Service
🚨 24/7 Emergency Response
🛡️ Licensed & Insured
💰 Fair & Honest Pricing
🇺🇸 Veteran-Proud Company
Whether you need routine maintenance or a brand-new installation, we handle every
aspect of your septic system with expertise and care.

Regular pumping prevents costly backups and keeps your system running smoothly and odor-free. We recommend pumping every 3–5 years for most households.

New construction or replacement — we design and install complete septic systems built to code and tailored to your property's needs.

Buying or selling a home? Our thorough inspection reports give you peace of mind and help you avoid surprise expenses down the road.

From cracked tanks to failed drain fields, our experienced crew diagnoses and repairs septic problems quickly and correctly the first time.

Septic emergencies don't wait for business hours. Call us anytime — we respond fast to backups, overflows, and urgent failures.

Slow drains or recurring clogs? We clear blockages in drains, pipes, and distribution lines to restore proper flow throughout your system.
A.J. Fenwick's Septic Service LLC was built on the values of hard work, integrity, and service to others. We're your neighbors — and we treat every job like it's our own property.
Fully licensed and insured in Maryland — we meet all state and local regulations so you don't have to worry.
Veteran-proud team that brings discipline, reliability, and work ethic to every job site.
We explain everything in plain language — no upsells, no surprises, just honest recommendations.
Modern equipment and up-to-date techniques that protect your yard and get the job done right.





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Regular pumping keeps your septic system functioning smoothly and odor-free. This vital maintenance prevents unpleasant smells, backups, and costly repairs caused by sludge buildup. By routinely removing solids, you protect your drainfield and the environment while ensuring your system works perfectly.
Don't wait for a problem to develop — schedule your septic service today and enjoy peace of mind!
Need a new septic system? We specialize in complete septic system installations — from new construction to full replacements. We're ready to assist if you need top-quality septic installation or repair services.
Contact us today and let us take care of everything. Call 240-298-2754
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Visit Facebook Page →Most households should pump their septic tank every 3–5 years. However, this depends on tank size, household size, and usage. A family of four with a 1,000-gallon tank typically needs service every 3–4 years. We can help you determine the right schedule for your system.
Warning signs include slow-draining sinks or toilets, gurgling sounds in pipes, sewage odors inside or outside your home, wet or unusually green patches of grass over the drain field, and sewage backups. If you notice any of these, call us right away — early action prevents expensive repairs.
A standard septic installation typically takes 1–3 days once permits are approved. The permitting process can take additional time depending on your county. We handle all the coordination and keep you informed throughout the entire process.
Yes! We offer emergency response for urgent septic issues including backups, overflows, and system failures. Call us at 240-298-2754 any time — we understand that septic emergencies can't wait until morning.
Never flush wipes (even "flushable" ones), feminine products, cotton balls, paper towels, medications, or grease. Avoid pouring harsh chemicals, bleach in large quantities, or paint down drains. These can kill the beneficial bacteria in your septic tank that break down waste, leading to system failure.
We serve St. Mary’s County and surrounding areas. Not sure if we cover your location? Give us a call at 240-298-2754 and we'll let you know right away. We're happy to travel for larger projects.
Don't wait for a small problem to become a costly emergency. Contact A.J. Fenwick's Septic Service today.
A.J. Fenwick's Septic Service LLC delivers honest, professional septic services across Maryland. Family-owned, veteran-proud, and committed to your community.