# Master meter systems

**Citation:** Mich. Admin. Code R 460.20335  
**Type / status:** regulation / current  
**Agency:** Michigan Public Service Commission  
**Effective:** 2026-05-04  
**Published:** Not stated

Rule 335. (1) The definition of <master meter system= contained in 49 C.F.R. §191.3, which is adopted by reference in R 460.20606, is superseded by the following: (a) As used in these rules, <master meter system= means a distribution pipeline system that receives metered gas from an outside source a

## Document text

Rule 335. (1) The definition of <master meter system= contained in 49 C.F.R. §191.3, which is adopted by reference in R 460.20606, is superseded by the following:

(a) As used in these rules, <master meter system= means a distribution pipeline system that receives metered gas from an outside source and that is used for distributing gas within a definable area, including but not limited to, a mobile home park, vacation rental housing complex, apartment complex, college campus, or prison. The master meter system supplies the ultimate consumer of the gas whether the gas is purchased or supplied at no cost.

(b) As used in this rule, <distribution pipeline system= means a system of main and service lines including all parts of those physical facilities through which gas moves in transportation, including but not limited to, pipe, valves, and other appurtenance attached to pipe, metering stations, regulator stations, delivery stations, holders, and fabricated assemblies. The distribution pipeline system ends at the outlet of the sub-meter, the outlet of the service regulator, or the building wall, whichever is furthest downstream.

(c) As used in this rule, <ultimate consumer= means a third-party end-user occupying an area containing distribution piping from the distribution pipeline system who routinely consumes gas from the system.

(d) As used in this rule, <sub-meter= means 1 of 2 or more meters for measuring different sections of gas supply that is located downstream from a master meter.

(2) An operator shall not supply gas to any new master meter system established on or after January 1, 2019 unless the commission has provided a waiver.

(3) The design, construction, inspection, and testing of additions to existing master meter systems are the responsibility of the operator with the direct costs paid by the owner, unless the commission has provided a waiver.

(4) Unless the commission has provided a waiver, for master meter systems that were established before January 1, 2019, an operator shall make efforts to negotiate an operations and maintenance agreement with the master meter system owner that ensures compliance with all applicable requirements of the gas safety standards for that system. The direct cost to the operator for services performed under this agreement, including an appropriate administrative overhead, may be charged to the owner of the master meter system. The monthly charge per service line must not exceed the residential meter charge or customer charge included in the operator's tariffs on January 1, 2018. An operator shall apply for any necessary waivers under this subrule by January 1, 2020.

(5) Beginning March 15, 2019, all operators shall provide an annual report to the commission describing the location, type of facility served, number of services at each known master meter system in service at the end of the previous calendar year, and the names and contact information for all known master meter system owners with whom the operator is unable to execute an operations and maintenance contract.

History: 2019 AACS.

## Provenance

- Official: Yes
- Source: <https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf>
- Source ID: `mi-ars-gas-safety`
- SHA-256: `00de1874cfa1ab1c56cee1a542dfa143df856559349efba14ddf1bc679fa960a`
- Retrieved: 2026-08-20T08:33:06.234Z
- Exported: 2026-08-22T14:47:59.722Z
- Document slug: `mi-admin-code-r-460-20335`

### Source metadata

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{
  "jurisdiction": "US-MI",
  "rule": "R 460.20335",
  "part": "3",
  "partTitle": "ADDITIONAL MINIMUM SAFETY STANDARDS",
  "edition": 27,
  "editionEffectiveOn": "2026-05-04",
  "corpusScope": "complete-current-dedicated-michigan-gas-safety-standards",
  "inventoryCount": 81,
  "currentRuleCount": 78,
  "references": [
    {
      "citation": "49 CFR 191.3",
      "referenceType": "federal-regulation-section",
      "url": "https://www.ecfr.gov/current/title-49/section-191.3"
    },
    {
      "citation": "R 460.20606",
      "referenceType": "michigan-administrative-rule",
      "url": "https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf"
    }
  ],
  "federalReferences": [
    {
      "citation": "49 CFR 191.3",
      "referenceType": "federal-regulation-section",
      "url": "https://www.ecfr.gov/current/title-49/section-191.3"
    }
  ],
  "stateReferences": [
    {
      "citation": "R 460.20606",
      "referenceType": "michigan-administrative-rule",
      "url": "https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf"
    }
  ],
  "statutoryAuthority": [
    "1969 PA 165",
    "MCL 483.152"
  ],
  "hazardousLiquidCoverage": false,
  "scopeCaveat": "This connector is the complete current dedicated Michigan Administrative Code Gas Safety corpus published by ARS/MOAHR from R 460.20101 through R 460.20606. It does not claim all Michigan utility, siting, excavation-damage-prevention, well, environmental, federal, local, or Commission order law. Three headings expressly marked rescinded are retained only in the verified inventory. The MPSC pipeline-safety program does not regulate hazardous-liquid pipelines, and this corpus must not be used to imply that it does.",
  "applicabilityCaveat": "Applicability depends on the definitions and exclusions in R 460.20101 and R 460.20102, MPSC jurisdiction, gas and facility type, intrastate or interstate status, gathering-line classification, operator status, waivers, federal preemption, and rule-specific conditions. MPSC inspects jurisdictional intrastate gas systems and acts as an interstate agent for inspections and investigations; PHMSA retains interstate enforcement authority. MPSC expressly states that its pipeline-safety program lacks hazardous-liquid-pipeline jurisdiction.",
  "incorporationCaveat": "The rules adopt specified editions of 49 CFR parts 40, 191, 192, and 199 and named API, ASME, and NACE/ISO standards. References metadata does not reproduce incorporated material, update a fixed edition, determine whether a provision is superseded, or grant rights in third-party standards. Verify the exact edition and any Michigan additions, exceptions, or superseding language in the current official sources.",
  "publicationCaveat": "The rule text comes from the current ARS/MOAHR Michigan Administrative Code download. The MPSC identifies it as the 27th edition effective May 4, 2026. Historical Guide to the Michigan Gas Safety Standards files, including the 25th edition guide, are not current rule artifacts and are not used by this connector.",
  "rights": "Michigan administrative rule text is official legal material and is preserved with ARS/MOAHR and MPSC attribution. Public availability does not resolve rights in agency seals, site presentation, incorporated federal compilations, API, ASME, NACE/ISO standards, forms, or other third-party material; downstream redistribution requires separate rights review.",
  "rightsReviewRequired": true,
  "region": "MI"
}
```