Coverage description
An Insurance Services Office (ISO) standard form. Coverage form for underground storage tanks designated in the declarations, covering bodily injury and property damage liability on a claims-made basis and corrective action costs on an incident-reported basis, with limits on defense expense payments.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 04 13Apr 2013Latest | 110 | 66 | 18 | Nov 2021 to Oct 2026 |
2 other edition dates appear in one or two filings each, often carrier-specific versions: 12 04, 07 98.
Where filings record what this form replaced, they name earlier edition 12 04. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 27 companies filed the 04 13 edition.
- CG 00 39 (Pollution Liability Coverage Form Designated Sites) is filed alongside it most often, in 111 of the same filings (99%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.
Carriers filing this form
The 10 carrier groups with the most filings that include CG 00 42, out of 31 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company | 20 | 16 | 04 1312 04 | Jun 26, 2026 |
| Markel Corporation GroupState National Insurance Company, Inc. | 12 | 3 | 04 1312 04 | Oct 22, 2026 |
| OLD Republic Group3 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company | 9 | 1 | 04 13 | May 11, 2026 |
| WR Berkley Corporation Group14 group companies filed it, led by Acadia Insurance Company and Continental Western Insurance Company | 9 | 1 | 04 13 | Jun 19, 2026 |
| Liberty Mutual Group5 group companies filed it, led by State Automobile Mutual Insurance Company and American Fire and Casualty Company | 6 | 2 | 04 13 | Jun 17, 2026 |
| Nationwide Corporation Group7 group companies filed it, led by Allied Insurance Company of America and Nationwide Agribusiness Insurance Company | 6 | 3 | 04 13 | Feb 12, 2025 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 04 13 | Jun 18, 2026 |
| Tokio Marine Holdings Incorporated GroupSafety National Casualty Corporation | 5 | 1 | 04 13 | Feb 17, 2026 |
| Axis Capital GroupAXIS Insurance Company | 4 | 1 | 04 13 | Apr 11, 2025 |
| Country Insurance & Financial Services GroupCOUNTRY Mutual Insurance Company | 4 | 1 | 04 13 | Jun 11, 2025 |
How the largest insurers handle CG 00 42
Groups among the largest commercial general liability insurers that filed CG 00 42 or their own version in the past five years.
- Fairfax Financial GroupUses CG 00 42 in 1 filing
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States
Number of filings that include CG 00 42 in each state, Oct 2021 to Oct 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CG 00 39Pollution Liability Coverage Form Designated Sites111 filings
- CG 00 40Pollution Liability Limited Coverage Form Designated Sites111 filings
- CG 00 38Products/Complete D Operations Liability Coverage Form110 filings
- CG 00 02Commercial General Liability Coverage Form109 filings
- CG 00 34Liquor Liability Coverage Form109 filings
- CG 27 10Supplemental Extended Reporting Period Endorsement108 filings
- CG 27 11Supplemental Extended Reporting Period Endorsement for Specific Accidents, Products, Work or Locations108 filings
- CG 00 65Electronic Data Liability Coverage Form106 filings
- CG 27 05Exclusion of Specific Accidents, Products, Work or Locations (for Use with Products Claims-Made Policies)90 filings
- CG 28 34Supplemental Extended Reporting Period Endorsement (for Use with Products Claims- Made Policy)89 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Oct 22, 2026 | State National Insurance Company, Inc. | CO | 04 13 | STNA-135128706 |
| Jul 2, 2026 | State National Insurance Company, Inc. | CO | 04 13 | STNA-135002472 |
| Jun 26, 2026 | The Cincinnati Casualty Companyand 2 more | CO | 04 13 | CNNA-134975473 |
| Jun 19, 2026 | Acadia Insurance Companyand 4 more | CO | 04 13 | BNIC-134992811 |
| Jun 19, 2026 | Berkley Casualty Companyand 8 more | CO | 04 13 | BNIC-134992815 |
| Jun 18, 2026 | Sompo America Insurance Company | CO | 04 13 | SMPJ-134985965 |
| Jun 17, 2026 | Atlantic Specialty Insurance Company | NM | 04 1307 98 | BEAC-134983795 |
| Jun 17, 2026 | State Automobile Mutual Insurance Company | CO | 04 13 | STAT-134984678 |
| May 11, 2026 | BITCO General Insurance Corporationand 1 more | CO | 04 13 | LDDX-134937506 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 04 13 | SFCC-134814522 |
| Feb 6, 2026 | Crum and Forster Indemnity Company | CA | 04 13 | CRUM-134831877 |
| Dec 9, 2025 | Universal North America Insurance Company | SC | 04 13 | UNAC-134760136 |
Most filed ISO CG forms
- CG 40 32 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CG 21 06 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information
- CG 20 10 Additional Insured - Owners, Lessees or Contractors - Scheduled Person or Organization Endorsement
- CG DS 01 Commercial General Liability Declarations
- CG 20 26 Additional Insured - Designated Person or Organization Endorsement
- CG 00 01 Commercial General Liability Coverage Form
- CG 20 37 Additional Insured - Owners, Lessees or Contractors - Completed Operations Endorsement
- CG 40 28 Broad Abuse or Molestation Exclusion
- CG 20 28 Additional Insured - Lessor of Leased Equipment
- CG 20 11 Additional Insured - Managers or Lessors of Premises
- CG 21 47 Employment-Related Practices Exclusion
- CG 04 35 Employee Benefits Liability Coverage
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