# Meter Testing Equipment and Facilities

**Citation:** 4 CCR 723-4 Rule 4303  
**Type / status:** regulation / current  
**Agency:** Colorado Public Utilities Commission  
**Effective:** Not stated  
**Published:** Not stated

(a) A utility shall provide, or shall arrange for a qualified third party to provide, such equipment and facilities as may be necessary to make the tests and to provide the service required. Such equipment and facilities shall be available at all reasonable times for inspection by Commission staff. 

## Document text

(a) A utility shall provide, or shall arrange for a qualified third party to provide, such
equipment and facilities as may be necessary to make the tests and to provide
the service required. Such equipment and facilities shall be available at all
reasonable times for inspection by Commission staff.
(b) A utility having more than 200 meters in service shall maintain, or shall require
the qualified third party that provides meter testing equipment and facilities to
maintain, suitable gas meter testing equipment in proper adjustment so as to
register the condition of meters tested within one-half of one percent. The utility
shall have and shall maintain, for the testing equipment, necessary certificate(s)
of calibration showing that the equipment has been tested with a standard
certified by the National Institute of Standards and Technology or other
laboratory of recognized standing.
(c) In its tariff, a utility shall include a description of its meter testing equipment and
of the methods employed to ascertain and to maintain accuracy of all testing
equipment.
(d) A utility shall keep records of certification and calibrations for all testing
equipment required by this rule for the life of the equipment.

## Provenance

- Official: Yes
- Source: <https://www.sos.state.co.us/CCR/DisplayRule.do?action=ruleinfo&ruleId=2260&deptID=18&agencyID=96&deptName=Department%20of%20Regulatory%20Agencies&agencyName=Public%20Utilities%20Commission&seriesNum=4%20CCR%20723-4>
- Source ID: `co-sos-ccr`
- SHA-256: `368406a4d119d1f8ee7c206967d9de483d3704c313518f93f0d8d0821ea17970`
- Retrieved: 2026-08-12T04:36:48.096Z
- Exported: 2026-08-25T17:31:30.929Z
- Document slug: `co-ccr-4-723-4-4303`

### Source metadata

```json
{
  "jurisdiction": "US-CO",
  "code": "4 CCR 723-4",
  "ruleKey": "4303",
  "pipelineScope": "colorado-jurisdictional-gas-utilities",
  "legalScope": "Current 4 CCR 723-4 rules regulating Colorado jurisdictional gas utilities and gas master-meter operators, including construction, operation, system safety, gas infrastructure planning, metering, service, and enforcement provisions. This is an adjacent gas-utility corpus, not a replacement for the repealed dedicated 4900-series pipeline-safety rules.",
  "applicabilityCaveat": "Part 4 applies according to Colorado Public Utilities Commission jurisdiction and each rule's scope. The former dedicated pipeline-safety rules 4900 through 4975 are reserved after repeal; this connector does not represent them as current. Part 4 does not replace federal pipeline-safety requirements, determine whether a facility is interstate or intrastate, or resolve operator-specific orders, waivers, tariffs, or later rulemaking.",
  "references": [],
  "ruleInfoUrl": "https://www.sos.state.co.us/CCR/DisplayRule.do?action=ruleinfo&ruleId=2260&deptID=18&agencyID=96&deptName=Department%20of%20Regulatory%20Agencies&agencyName=Public%20Utilities%20Commission&seriesNum=4%20CCR%20723-4",
  "pucRulesUrl": "https://puc.colorado.gov/gasrulesandregulations",
  "ruleVersionId": "12549",
  "editionEffectiveOn": "2026-06-14",
  "publicationStatus": "The Colorado Secretary of State identifies the source as the official publication of state administrative rules. The edition date applies to the compiled rule version and is not represented as the effective date of every provision.",
  "rights": "Official state rule text is preserved with attribution and source links. Public accessibility does not imply rights in agency marks, third-party material, or incorporated standards; commercial redistribution requires review.",
  "region": "CO"
}
```