Coverage description
An Insurance Services Office (ISO) standard form. It excludes umbrella coverage for bodily injury, property damage and personal and advertising injury that would not have happened but for exposure to PFAS, along with any cost of testing for, cleaning up or otherwise responding to PFAS.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 12 23Dec 2023 | 3 | 2 | 3 | Dec 2023 to Aug 2025 |
| 05 23May 2023Latest | 246 | 74 | 48 | Oct 2022 to Oct 2026 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 09 22.
What the filings show
- Edition in use: in the past 12 months, 16 companies filed the 05 23 edition.
- CU 00 05 (Exclusion - Violation of Law Addressing Data Privacy) is filed alongside it most often, in 77 of the same filings (31%).
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Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 CU 34 54, out of 44 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 38 | 38 | 05 23 | Apr 4, 2023 |
| THE Hanover Insurance Group7 group companies filed it, led by Massachusetts Bay Insurance Company and The Hanover Insurance Company | 32 | 31 | 05 23 | Feb 20, 2026 |
| Farmers Insurance GroupTruck Insurance Exchange | 23 | 23 | 05 23 | Aug 23, 2023 |
| Midwest Family GroupMidwest Family Mutual Insurance Company | 19 | 18 | 05 23 | Nov 4, 2024 |
| Pennsylvania National Insurance GroupPennsylvania National Mutual Casualty Insurance Company | 19 | 19 | 05 23 | Oct 11, 2023 |
| American Family Insurance GroupMidvale Indemnity Company | 14 | 14 | 05 23 | May 21, 2024 |
| Grinnell Mutual GroupGrinnell Mutual Reinsurance Company | 10 | 10 | 05 23 | Mar 26, 2024 |
| Brookfield Reins Limited Group2 group companies filed it, led by American National Property And Casualty Company and United Farm Family Insurance Company | 6 | 6 | 05 23 | Oct 20, 2026 |
| Grange Mutual CAS GroupGrange Insurance Company | 6 | 6 | 05 23 | Mar 26, 2024 |
| Hastings Mutual Insurance Company | 6 | 5 | 05 23 | Mar 13, 2025 |
How the largest insurers handle CU 34 54
Groups among the largest commercial umbrella and excess insurers that filed CU 34 54 or their own version in the past five years.
- Chubb Limited GroupFiles its own version: 07-02-2901 Exclusion – Perfluoroalkyl And Polyfluoroalkyl Substances (PFAS) (38 states)
- Berkshire Hathaway GroupUses CU 34 54 in 1 filing
- WR Berkley Corporation GroupFiles its own version: CL CX 2506 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) (20 states)
- Fairfax Financial GroupUses CU 34 54 in 2 filings
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States
Number of filings that include CU 34 54 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.
- CU 00 05Exclusion - Violation of Law Addressing Data Privacy77 filings
- CU 21 86Exclusion - Access or Disclosure of Confidential or Personal Material or Information71 filings
- CX 21 97Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)62 filings
- CU 21 88Exclusion - Access or Disclosure of Confidential or Personal Material or Information (Coverage B Only55 filings
- CU 34 56Cyber Incident54 filings
- CU 34 55Exclusion - Electronic Data - Deletion of Bodily Injury Exception47 filings
- CU 21 87Exclusion - Access or Disclosure of Confidential or Personal Information and Data-Related Liability - Limited Bodily Injury Exception Not Included46 filings
- CU 21 90Public Or Livery Passenger Conveyance And On-Demand Delivery Services Exclusion45 filings
- CU 22 37Motor Carrier Endorsement44 filings
- CU 34 17Exclusion - Earth Movement44 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Oct 20, 2026 | American National Property And Casualty Company | CA | 05 23 | ANPC-134734509 |
| Oct 15, 2026 | Security National Insurance Companyand 2 more | CA | 09 22 | UNKP-135059588 |
| Jul 2, 2026 | Zenith Insurance Company | CA | 05 23 | ZICO-134998423 |
| Jun 30, 2026 | The Medical Protective Companyand 1 more | IL | 05 23 | MDPC-135002488 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 05 23 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 05 23 | CHMU-134995025 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 05 23 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 05 23 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 05 23 | PHLX-134967828 |
| Feb 20, 2026 | NOVA Casualty Company | CA | 05 23 | HNVR-G134848050 |
| Feb 17, 2026 | Safety National Casualty Corporation | CO | 05 23 | SFCC-134815068 |
| Jan 5, 2026 | Mississippi Farm Bureau Casualty Insurance Company | MS | 05 23 | SFBC-134775309 |
Most filed ISO CU forms
- CU 21 86 Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information
- CU 00 05 Exclusion - Violation of Law Addressing Data Privacy
- CU 34 56 Exclusion – Cyber Incident
- CU DS 01 Commercial Liability Umbrella Declarations
- CU 21 88 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)
- CU 34 44 Broad Abuse or Molestation Exclusion
- CU 34 55 Exclusion - Electronic Data - Deletion Of Bodily Injury Exception
- CU 22 37 Motor Carrier Endorsement
- CU 21 87 Exclusion - Access Or Disclosure Of Confidential Or Personal Information and Data-Related Liability - Limited Bodily Injury Exception Not Included
- CU 04 02 Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion
- CU 04 54 Loss of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception
- CU 00 01 Commercial Liability Umbrella Coverage Form
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