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Violation Tracker Current Parent Company Summary

Current Parent Company Name: Southwest Gas
Ownership Structure: publicly traded (ticker symbol SWX)
Headquartered in: Nevada
Major Industry: miscellaneous energy products and systems
Specific Industry: energy distribution
Penalty total since 2000: $6,964,506
Number of records: 52
Top 5 Offense Groups (Groups Defined)Penalty TotalNumber of Records
environment-related offenses$4,704,65314
safety-related offenses$1,301,80330
employment-related offenses$958,0508
Top 5 Primary Offense TypesPenalty TotalNumber of Records
environmental violation$3,650,0001
utility safety violation$1,147,50017
air pollution violation$1,054,65313
labor relations violation$933,7126
workplace safety or health violation$154,30313
Notes: Parent-subsidiary linkages are based on relationships current as of the latest revision listed in the Update Log, which may vary from what was the case when a violation occurred. The penalty totals are adjusted to account for the fact that the individual entries below may include both agency records and settlement announcements for the same case; or else a penalty covering multiple locations may be listed in the individual records for each of the facilities. The totals are also adjusted to reflect cases in which federal and state or local agencies cooperated and issued separate announcements of the outcome. Duplicate or overlapping penalty amounts are marked with an asterisk in the list below.

Links: Subsidy Tracker data on financial assistance to this company by federal, state and local government agencies can be found here.

Individual Penalty Records:

Click on the company or penalty amount for more information on each case.

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CompanyPrimary Offense TypeYearAgencyPenalty Amount sort icon
Questar Gas Management Companyenvironmental violation2012EPA$3,650,000
Southwest Gas Corporationlabor relations violation2002NLRB$426,625
Southwest Gas Corporationlabor relations violation2000NLRB$321,938
Dominion Energy Questar Pipelineair pollution violation2006CO-DPHE$319,307
Southwest Gas Corporationair pollution violation2013CA-ARB$300,000
Southwest Gas Corporationutility safety violation2017NV-PUC$300,000
Southwest Gas Corporationutility safety violation2015NV-PUC$215,000
Southwest Gasutility safety violation2017CA-PUC$200,000
Southwest Gas Corporationutility safety violation2015NV-PUC$195,000
Questar Gas Managementair pollution violation2007CO-DPHE$100,000
Southwest Gaslabor relations violation2009NLRB$95,000
Southwest Gas Corporationutility safety violation2018NV-PUC$94,000
Wexpro Co.air pollution violation2019WY-ENV$87,886
Questar Gas Managementair pollution violation2011CO-DPHE$84,700
Southwest Gas Corporation, a California Corporationlabor relations violation2003NLRB$50,829
NORTHERN PIPELINE CONSTRUCTION CO.workplace safety or health violation2007OSHA$37,500
Northern Pipeline Construction Companylabor relations violation2001NLRB$31,320
Southwest Gas Corporationutility safety violation2011NV-PUC$30,000
NPL CONSTRUCTION COMPANY, MID-AMERICA OFFICEworkplace safety or health violation2022OSHA$29,004
Wexpro Co.air pollution violation2012CO-DPHE$27,825
Wexpro Co.air pollution violation2012CO-DPHE$25,200
Questar Gas Managementair pollution violation2013CO-DPHE$23,800
Questar Gas Managementair pollution violation2009CO-DPHE$23,335
Wexpro Co.air pollution violation2013WY-ENV$21,000
Southwest Gas Corporationutility safety violation2020NV-PUC$20,000
Wexpro Co.air pollution violation2014CO-DPHE$17,850
Southwest Gas Corporationutility safety violation2019NV-PUC$15,000
Questar Gas Managementair pollution violation2005CO-DPHE$14,000
NPL CONSTRUCTION CO.workplace safety or health violation2011OSHA$14,000
NPL Construction, Inc.wage and hour violation2012WHD$13,505
NATIONAL BARRICADE LLCworkplace safety or health violation2016OSHA$12,675
Southwest Gas Corporationutility safety violation2012NV-PUC$12,500
Southwest Gas Corporationutility safety violation2015NV-PUC$11,000
Questar Energy Services, Incwage and hour violation2013WHD$10,833
Southwest Gas Corporationutility safety violation2021NV-PUC$10,000
Southwest Gas Corporationutility safety violation2020NV-PUC$10,000
Southwest Gas Corporationutility safety violation2019NV-PUC$10,000
Questar Gas Managementair pollution violation2008CO-DPHE$9,750
NPL CONSTRUCTION COMPANYworkplace safety or health violation2013OSHA$9,100
NPL CONSTRUCTION COMPANY, MID-AMERICA OFFICEworkplace safety or health violation2016OSHA$8,908
Southwest Gaslabor relations violation2008NLRB$8,000
Southwest Gas Corporationutility safety violation2018NV-PUC$7,500
NPL Construction Companyutility safety violation2022MA-DPU$7,500
NPL CONSTRUCTION COMPANYworkplace safety or health violation2010OSHA$7,000
QUESTAR GAS COMPANYworkplace safety or health violation2016OSHA$7,000
NORTHERN PIPELINE CONSTRUCTIONworkplace safety or health violation2006OSHA$6,400
DOMINION ENERGY QUESTAR CORPworkplace safety or health violation2017OSHA$6,375
NPL CONSTRUCTION COMPANY, MID-AMERICA OFFICEworkplace safety or health violation2022OSHA$6,091
QUESTAR GAS COworkplace safety or health violation2009OSHA$5,250
NPL Construction Companyutility safety violation2019MA-DPU$5,000
NPL Construction Companyutility safety violation2018MA-DPU$5,000
QUESTAR GAS COworkplace safety or health violation2009OSHA$5,000
(*): Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting.