Does my oilfield GL cover a spill, or do I need separate pollution coverage?

Start with the assumption that your general liability policy does not cover pollution. That is the right default for almost every oilfield contractor.

The standard commercial GL form already carries what the industry calls the "absolute" pollution exclusion. Despite the name, it leaves a few narrow pieces of coverage in place. Many policies then go further and attach a total pollution exclusion. The ISO version is CG 21 49, and it removes nearly everything that was left: it bars bodily injury or property damage that would not have occurred "but for" a pollution event.

Energy GL policies are often written on manuscript forms, not plain ISO paper, but the structure is usually the same. A broad pollution exclusion comes first. Then, if you are lucky, a narrow buyback is added on top of it.

Why this matters on a lease: almost everything you touch is a "pollutant" under these definitions. Produced water, crude, condensate, hot oil, diesel, hydraulic fluid, frac fluid, drilling mud. A blown hose on a vac truck or a leaking flowline connection you just tightened is a pollution event in the eyes of the policy, even though you think of it as an ordinary accident.

So the real question is never "do I have GL?" It is "what gives pollution coverage back, how much, and under what conditions?"

The most common way an energy GL adds pollution back is a time-element (sometimes called "sudden and accidental") pollution endorsement. It covers a release only if it meets conditions written into the form. The two that matter most are a discovery window and a reporting window.

These are not theoretical. In a 2020 federal appeals case, the endorsement required that the pollution incident be discovered within 7 days and reported to the insurer in writing within 45 days. The insured called the insurer inside the first week, was told to wait, and reported in writing later. The court held there was no coverage. A phone call did not satisfy a written-notice requirement, and the timing requirement defined the coverage itself. The same opinion described an earlier Fifth Circuit case, applying Texas law to an oil company's policy, where the endorsement required discovery within 7 days and reporting within 30 days. Late notice defeated coverage there too.

Your windows may be different. The point is that they are often short, they are measured in days, and the reporting requirement usually means written notice to the insurer, not a call to your agent's office or a mention to the company man.

Time-element coverage also tends to exclude gradual releases. A slow seep from a corroded line that nobody notices for months will usually fail the discovery test no matter how fast you report once you find it.

A contractors pollution liability policy is a standalone policy built to cover pollution caused by your operations. Unlike a time-element buyback, it is designed to cover pollution on purpose rather than as an exception to an exclusion.

What a CPL policy generally does better than a GL buyback:

• Covers gradual releases, not only sudden ones, depending on the form.
• Includes cleanup costs as a core part of the coverage.
• Carries its own limit, separate from your GL aggregate.
• Can often be written to include additional insureds and a waiver of subrogation in favor of the operator.

What to read carefully:

• Covered operations. The policy should describe what you actually do. If it says "roustabout services" and you also run a hot oil unit, ask.
• Occurrence vs claims-made. Some CPL policies are claims-made. If so, you need to know the retroactive date and what happens when you change policies.
• Transportation. Many CPL policies exclude pollution from autos once the load leaves the site. That gap is covered below.
• Disposal sites. If you haul waste, ask whether pollution at a third-party disposal site is covered. It is often a separate coverage grant or endorsement.

For a water hauler, a vac truck operator, or a hot oil company, CPL is usually the cleanest answer to an MSA pollution requirement. See water hauling insurance and hot oil insurance for the trade-specific picture.

Most operator contracts do not leave pollution to chance. They allocate it, usually by where the pollution starts.

The model drilling contract published by the International Association of Drilling Contractors is a useful reference because so many service MSAs borrow its logic. In its 2013 U.S. land daywork form:

• The contractor takes responsibility, including control and removal, for pollution that originates above the surface from spills of fuels, lubricants, motor oils, pipe dope, paints, solvents and garbage that is in the contractor's possession and control and directly associated with its equipment.
• The operator takes responsibility for all other pollution, including pollution from fire, blowout, cratering, seepage or any flow of oil, gas or water, and from drilling and completion fluids and cuttings.

Service company MSAs are not drilling contracts, and many operators write their own allocation. Some follow this split closely. Some push more onto the contractor, for example by making you responsible for pollution from any fluids "in your care, custody or control," which for a water hauler can mean the entire load.

Your insurance needs to match the allocation you signed. If the MSA puts above-surface pollution from your equipment on you, then a GL pollution exclusion with no buyback means you have signed up for a risk with no insurance behind it. That is the gap this site is built to find. See knock-for-knock indemnity for how the rest of the risk allocation works.

Pollution from a truck accident is handled under the auto policy, not the GL, and the business auto form has its own pollution exclusion.

CA 99 48 (Pollution Liability: Broadened Coverage for Covered Autos). This ISO endorsement can be added to the Business Auto or Motor Carrier coverage form. It restores coverage for pollutants being transported or handled by a covered auto. It still has limits on timing: coverage generally does not apply to pollutants before they are moved onto the auto or after they are moved off it, except where an accident away from your premises upsets or overturns the container. Editions differ, and a newer edition is scheduled for states that adopt the current ISO revision, so read the edition on your policy.

MCS-90. If you are required to carry federal financial responsibility, your auto policy will carry the MCS-90 endorsement. It is often mistaken for pollution coverage. It is not. Courts describe it as a suretyship by the insurer to protect the public: the insurer agrees to pay a final judgment even where the policy would not otherwise cover it, and you agree to reimburse the insurer for that payment. It does not cover your own cleanup costs, and it does not protect your balance sheet. See what is MCS-90 and oilfield auto insurance.

Transportation pollution policies. Some contractors carry a separate transportation pollution policy or a CPL that extends to transit. For anyone hauling produced water or crude, ask directly whether loading and unloading at the lease and the disposal site are covered, because that is where spills often happen and where auto pollution endorsements can be weakest. See do I need pollution coverage to haul produced water.

Pollution requirements in operator MSAs commonly show up in one of a few forms. Limits of $1,000,000 to $5,000,000 per occurrence are commonly seen, but the wording matters more than the number.

Certificates fail on pollution for predictable reasons. The certificate lists "GL" with no reference to pollution. The pollution coverage is a sublimit the reviewer cannot see. The CPL policy exists but does not list the operator as an additional insured. Or the MSA requires "sudden and accidental pollution coverage with a discovery period of not less than X days" and the endorsement on file is shorter.

When ISNetworld or Avetta flags pollution, it is usually because the reviewer could not match the certificate and endorsements to the specific line in the operator's requirement. See why was my certificate of insurance rejected and ISNetworld insurance requirements.

A short list that catches most pollution problems:

1. Does my GL have a pollution buyback at all? If yes, what are the discovery and reporting windows, and is written notice required?
2. Do I have a separate CPL policy? Is it occurrence or claims-made, and what is its limit?
3. What does this MSA make me responsible for: above-surface spills from my equipment, anything in my care, custody or control, or something broader?
4. If I haul fluids, does any policy cover a spill while loading or unloading?
5. Is the operator named as an additional insured on the pollution coverage, and does the waiver of subrogation reach it?
6. Does my umbrella sit over pollution, or does it exclude it? (Most umbrellas exclude it. See oilfield umbrella insurance.)

If you cannot answer these from your own documents, send us the MSA and your current policies. We will map each pollution requirement to the coverage that answers it, or show you exactly where it is missing.