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Leak Detection Authority serves as a national reference directory for the leak detection services sector in the United States, covering residential, commercial, and municipal contexts. This page describes the geographic scope of the directory, what information to provide when submitting a message or inquiry, expected response timelines, and the structured categories through which contact can be routed. Accurate and complete submissions accelerate processing and ensure inquiries reach the correct review queue.

Service area covered

The directory operates at national scope, covering all 50 states and the District of Columbia. Leak detection as a professional discipline is regulated at the state level through plumbing licensing boards, contractor registration requirements, and in some jurisdictions, specialty certifications layered on standard plumbing credentials. State agencies such as the California Contractors State License Board (CSLB) and the Texas State Board of Plumbing Examiners (TSBPE) maintain jurisdiction over licensed practitioners operating within their respective states — and directory entries referencing those states are evaluated against the applicable licensing structure.

The directory distinguishes between 3 primary service contexts:

1. Residential — Single-family and multi-unit dwellings, governed by the International Residential Code (IRC) and state-level adoptions.
2. Commercial — Office, retail, industrial, and institutional properties, governed by the International Plumbing Code (IPC) and local amendments.
3. Municipal / Infrastructure — Water distribution systems, wastewater infrastructure, and public utilities, often subject to oversight by the Environmental Protection Agency (EPA) under the Safe Drinking Water Act (SDWA) and state primacy programs.

Inquiries referencing licensed contractors, technology providers, or service listings should indicate which service context is applicable. Entries that cross two or more service contexts require separate documentation for each category.

What to include in your message

Submissions and inquiries that omit key information are returned for clarification, which extends processing time. The following breakdown identifies the required and supporting information for each major inquiry type.

For listing submissions or updates:
- Business or organization name (as registered with the relevant state licensing authority)
- State(s) of operation and primary service ZIP code or metro area
- License or registration number issued by the applicable state board
- Service category (residential, commercial, municipal, or multi-context)
- Detection methodology offered — acoustic, thermal imaging, tracer gas, video inspection, or another named method
- Any relevant certifications, such as those issued by the American Society of Plumbing Engineers (ASPE) or the National Leak Detection Association

For technical or editorial inquiries:
- The specific page or directory section the inquiry references
- The named standard, code, or agency involved (e.g., ASTM E1105, NFPA 24, IAPMO)
- A factual basis for any correction request, including a reference to the authoritative source

For general directory questions:
- A specific description of the service category or geographic area in question
- Whether the inquiry concerns a listing, a technical reference, or a regulatory citation

Submissions lacking a state jurisdiction, license number (where applicable), or identifiable service category enter a secondary review queue, which carries a longer processing window.

Response expectations

Inquiry handling follows a structured queue based on submission type and completeness. The following processing expectations apply under standard operating conditions:

• Complete listing submissions — reviewed within 5–7 business days
• Listing update requests — reviewed within 3–5 business days
• Editorial or technical corrections — reviewed within 7–10 business days, as corrections require cross-referencing against named codes, agency guidance, or published standards before any change is applied
• General directory inquiries — acknowledged within 2 business days; substantive responses may require additional time depending on specificity

Processing timelines do not apply to submissions missing required fields. Incomplete submissions are returned with a notation identifying the missing information. Resubmissions are processed from the point of receipt, not from the original submission date.

The directory does not provide contractor recommendations, referral services, or emergency service dispatch. Inquiries of that nature are outside the scope of this platform and are not routed to a response queue.

Additional contact options

Beyond direct message submission, the directory supports structured engagement through 3 defined channels, each corresponding to a distinct user category.

Directory reference channel — For service seekers and researchers using the Leak Detection Listings to locate providers or technical references. Inquiries through this channel pertain to the accuracy, completeness, or classification of existing entries.

Professional and industry channel — For licensed contractors, technology vendors, and industry associations seeking to add, update, or remove listings. Submissions through this channel are subject to license verification against the applicable state licensing board. The Leak Detection Directory Purpose and Scope page describes the criteria applied during that review.

Editorial and standards channel — For researchers, code officials, and regulatory personnel identifying factual errors in technical content, outdated standards citations, or regulatory references that require revision. Corrections citing superseded editions of the IPC, IRC, SDWA regulations, or ASPE guidance documents are prioritized in this queue. Supporting documentation — such as a published code revision, an agency notice, or a standards update issued by ASTM, IAPMO, or NSF International — should accompany any correction request to facilitate timely review.

Submissions that do not fit cleanly into one of these 3 channels should be directed to the general inquiry queue. All submissions are routed by staff after initial review; there is no automated triage that determines final classification without human review.