6 verified septic companies across 3 cities in St. Marys County. Compare ratings, services, and request free quotes from local providers.
St. Marys County, Maryland is home to 6 verified septic service providers listed across 3 cities in this directory. Situated at the southern tip of Maryland's Western Shore peninsula, the county is largely rural, with many properties relying on private septic systems rather than municipal sewer connections. The Patuxent River and Chesapeake Bay shoreline influence local soil conditions and groundwater levels, making proper septic maintenance especially relevant for homeowners near low-lying or waterfront areas. St. Marys County's mix of older farmsteads, waterfront cottages, and newer residential developments means the age and type of septic systems vary considerably from property to property. Whether you need routine pumping, a pre-sale inspection, or a full system replacement, the companies listed here serve communities throughout the county, including Mechanicsville, Hollywood, and Valley Lee.
Hollywood, MD
⭐ 5.0 (137 reviews)
Cullison Excavating and Septic is a family-run excavating and septic service company operating in Southern Maryland since 1962. The company employs eight full-time staff members, including four licensed installers certified in sand mound and BAT systems. They provide septic services including pumping, repair, installation, inspections, and emergency response with same-day availability. Their excavating services cover basements, road work, drainage solutions, and grading. Additional offerings inc
Valley Lee, MD
⭐ 5.0 (7 reviews)
Carter's Septic Tank Services is a septic system service provider based in Valley Lee, Maryland. The company specializes in septic tank maintenance, repair, and related services for residential and commercial clients in the area. With a perfect 5.0 Google rating, Carter's Septic Tank Services demonstrates a commitment to customer satisfaction and quality workmanship. Whether homeowners require routine tank pumping, system inspections, or emergency repairs, the company offers professional expertise to keep septic systems functioning properly. Serving the Valley Lee community and surrounding regions, Carter's Septic Tank Services is a trusted local option for septic system needs.
Hollywood, MD
⭐ 4.7 (66 reviews)
C & C Plumbing & Septic Inc. is a full-service plumbing contractor serving Hollywood, Maryland and surrounding areas. Established in 1969 by James "Jimmy" Cusic, this family-owned and operated business is now in its second generation under Kevin Cusic's leadership. The company provides comprehensive plumbing services for residential and commercial properties, including existing homes and businesses, new construction, and renovations. They also offer septic services and water treatment solutions.
Mechanicsville, MD
⭐ 4.7 (14 reviews)
Eddie Guy Septic provides septic system installation and repair services in St. Mary's County, Charles County, and Calvert County in Southern Maryland, operating from Mechanicsville, Maryland. The company has over 45 years of experience in the septic industry. Services include perc tests, nitrogen reducing septic systems, sand mound systems, drain fields, and septic system repair. The company specializes in helping clients pass difficult perc tests by leveraging knowledge of local geography and
Mechanicsville, MD
⭐ 4.6 (37 reviews)
Copsey's Septic Tank Service provides septic system maintenance and pumpout services in Southern Maryland, operating from Mechanicsville, Maryland. The company has been serving the region since 1967. They offer septic system pumpouts, cleanouts, complete system reviews, and maintenance services for both residential and commercial properties. Their services focus on helping customers maintain septic systems while managing costs and preventing system failures. The company handles projects of all s
Mechanicsville, MD
⭐ 4.0 (4 reviews)
C.L. Boswell Jr Septic Service is a family-owned business with decades of experience, serving Mechanicsville, Maryland, and the surrounding areas. They specialize in a comprehensive range of septic services, including septic tank pumping, riser installation, and repairs. The company is certified in various systems such as BAT tanks, conventional septic tanks, holding tanks, sand mounds, and low-pressure dosing systems. Beyond core septic services, they also offer French drain installations around homes and line snaking. C.L. Boswell Jr Septic Service is committed to providing prompt and reliable service, ensuring customer satisfaction by going above and beyond to complete jobs on time. They also offer valuable septic knowledge, recommending regular tank pumping and maintenance tips to help customers avoid costly repairs. They are available Monday through Friday from 8 AM to 5 PM, with weekend appointments available by request.
Much of St. Marys County, Maryland remains rural or semi-rural, and a large share of residential properties depend on on-site septic systems. Older homes, particularly those built before modern permitting standards, may have conventional gravity-fed systems or aging cesspools that require closer monitoring. Newer construction and properties on lots with less permeable soils often use pump-up systems or alternative treatment technologies to meet current standards. Seasonal considerations matter here as well: Maryland's humid summers can accelerate the biological activity in drain fields, while periods of heavy rainfall — common in the mid-Atlantic region — can temporarily saturate soils and stress system performance. Waterfront and near-waterfront properties face additional scrutiny given the county's proximity to the Chesapeake Bay and its tributaries, where poorly functioning systems can have downstream environmental consequences.
In St. Marys County, Maryland, septic system permits and oversight fall primarily under the St. Marys County Department of Health, which operates in coordination with the Maryland Department of the Environment. Homeowners typically need a permit for new system installation, major repairs, or system alterations. At the point of sale, Maryland encourages — and in many cases effectively requires through lender or local practice — a septic inspection to confirm the system is functioning properly before transfer of ownership. Permit applications and inspection requirements are handled at the county health department level, and property owners can contact that office directly to learn about current application procedures, required setbacks, and approved system types. The Maryland Department of the Environment also publishes statewide guidance on on-site sewage disposal that may supplement local rules. Always verify current requirements with your local health department.
Get free quotes from verified septic companies serving St. Marys County, Maryland.
⚡ Average response time: under 2 hours