Plumbing Listings

The plumbing listings on this directory cover licensed service providers operating across the United States, with a specific focus on septic system installation, maintenance, pump repair, and related subsurface drainage work. Entries are drawn from the licensed contractor pool operating under state-level plumbing and environmental codes, and are organized to support service seekers, facility managers, and industry professionals in locating qualified providers within their jurisdiction. The Septic Listings section provides the most granular breakdown of provider categories within this vertical.

What each listing covers

Each listing represents a business or sole-proprietor contractor that holds, or has held, an active license to perform plumbing or septic-related work in at least one US state. The directory does not list unlicensed operators or general handyman services that perform plumbing work as a secondary trade.

Listings are classified by service type, with the following primary categories:

1. Septic system installation — contractors licensed to design and install new septic tanks, leach fields, mound systems, and alternative treatment systems under applicable state health or environmental codes
2. Septic pump repair and maintenance — providers specializing in effluent pumps, grinder pumps, and lift station components, including those certified under manufacturer programs for brands such as Zoeller or Goulds
3. Drain cleaning and sewer lateral work — plumbing contractors performing hydrojetting, snaking, and camera inspection of building sewer lines connecting to municipal or private septic systems
4. Inspection and compliance services — licensed inspectors and engineers conducting point-of-sale or permit-triggered evaluations under state-specific Title 5, Chapter 64E-6, or equivalent regulatory frameworks
5. Portable sanitation and holding tank services — operators maintaining holding tanks and portable restroom units, a segment regulated separately from conventional plumbing in most states

The distinction between a licensed plumber and a licensed septic contractor is enforced differently across states. In Florida, the Department of Health administers septic permitting under Chapter 64E-6 of the Florida Administrative Code, while in Massachusetts, Title 5 (310 CMR 15.000) governs onsite sewage. Listings note which license type applies where that data is available.

Geographic distribution

Provider density within the directory reflects the distribution of the US housing stock that relies on onsite sewage systems. According to the US Environmental Protection Agency, approximately 21 percent of US households use septic systems — a figure that concentrates listings in rural and exurban counties rather than in dense metropolitan cores.

States with the highest septic system prevalence — including Maine, Vermont, New Hampshire, North Carolina, and Michigan — generate proportionally deeper listing pools. By contrast, states such as California and New York, where municipal sewer connection rates exceed 85 percent, contribute fewer septic-specific contractors but maintain robust general plumbing listings.

The directory covers all 50 states and the District of Columbia. Coverage is not uniform: states that require contractor licensing at the state level (rather than at the county or municipal level) produce more verifiable license records and therefore more complete listing data. Texas, for example, licenses master plumbers through the Texas State Board of Plumbing Examiners, producing a centralized and auditable license database. States without unified licensing registries generate sparser data.

For a full explanation of how this directory structures its geographic scope, see the Directory Purpose and Scope reference page.

How to read an entry

Each listing entry contains a structured set of fields. Not all fields are populated for every provider — data completeness depends on the licensing body and the information available from public records.

Standard fields present in most entries:

• Business name — the registered trade name or DBA under which the contractor holds licensure
• License number and type — the state-issued identifier and the license category (e.g., Master Plumber, Septic Contractor, On-Site Sewage Installer)
• Issuing authority — the state agency or board that issued the license
• Service area — the county, region, or state the provider services, as reported in licensing records
• Primary trade classification — aligned to the service categories described above
• Inspection/permit flag — indicates whether the provider is listed as an approved installer or inspector with the relevant state environmental or health agency

Entries do not display ratings, reviews, or performance scores. This directory functions as a structured reference, not a consumer review platform. The How to Use This Septic Resource page explains the methodology for interpreting listing data.

What listings include and exclude

Included:

• Contractors holding an active or recently lapsed state license in plumbing, septic installation, or onsite sewage
• Businesses registered with a state environmental or public health agency as approved system installers or inspectors
• Pump and equipment specialists holding manufacturer certifications recognized by state regulators
• Entities that appear in publicly accessible licensing databases maintained by state boards

Excluded:

• General contractors who list plumbing as one of multiple trades without holding a dedicated plumbing or septic license
• Municipal sewer authorities and public utility districts
• Product manufacturers and equipment distributors not engaged in field installation or repair
• Contractors operating exclusively under a county variance or exemption rather than a state-level license
• Providers located outside the United States

Safety-related exclusions follow the logic of the National Standard Plumbing Code (NSPC) and the Uniform Plumbing Code (UPC), both of which establish minimum qualification thresholds for persons performing work on potable water and wastewater systems. Work performed on septic systems adjacent to potable well infrastructure carries additional regulatory weight under Safe Drinking Water Act provisions administered by the EPA, and contractors in this category are flagged accordingly within the listings where that data is resolvable.