Who gains from saving nature
Ledger 1 : 33 — For each dollar financing nature-based solutions in 2023, about $33 financed activities harmful to nature. (UNEP)
Cases / Chemical pollution · United States · 2002–2025

PCB pollution and the Monsanto Anniston settlement

Nature's voice · report
No measurement of the harm done to me here is on record.
Did nature suffer? Not measured.
Not on record
  • The record does not name which of my species, waters, soils or forests were harmed.
What the record lacks: 2 none on record · 3 insufficient · 1 not measured · 1 disputed · 2 unclear See the gaps

Monsanto settled claims by Anniston, Alabama residents over PCB pollution, reported at US$700 million. In 2025 Bayer, which owns Monsanto, sued an insurer over cover for later PCB settlements.

US$700 million estimateAnniston residents' settlement, as reported
Reported by CNN Money for 2002; the record also gives a 2003 date and a US$550 million cash payment. Not an estimate.

Status As of December 2025: Bayer's suit against AIG over cover for PCB settlements was filed in St. Louis County, Missouri; no ruling in the record.

What?
PCB pollution claims against Monsanto, including the Anniston, Alabama settlement reported at US$700 million in 2002, later PCB settlements by Bayer, and Bayer's 2025 suit against AIG over insurance cover. CNN Money
Where?
Anniston, Alabama; US cities, ports and three states in the 2020 settlements; St. Louis County, Missouri for the insurance suit. News Tribune
When?
Settlement reported in 2002 (a 2003 date also appears); Bayer's agreements June 2020; payment demands July and October 2024; suit filed early December 2025. CNN Money
Who?
Gained
None on record
Lost
  • Monsanto / Bayer — Agreed to the settlements recorded: US$700 million (Anniston, 2002, as reported) and about US$820 million for PCB water claims (2020). Bayer
  • Monsanto's insurers — Contributed to the cash payment in the Anniston settlement (extent not stated).
Harmed
None on record
Why?
The record gathered does not state the cause or timing of the PCB releases at Anniston; it records the settlements and the later insurance dispute.
How?
Claims were resolved by settlement; Bayer then sought payment from excess insurers and sued AIG when, according to its complaint, the insurer refused. News Tribune
6 of 6 questions answered from the record

What happened

The record, in order.

Polychlorinated biphenyls (PCBs) were the subject of a claim brought by residents of Anniston, Alabama against Monsanto. CNN Money reported in 2002 that the Anniston case settled for US$700 million and covered more than 20,000 residents.

A separate record, a filing by Solutia cited in the sources reviewed, describes a US$550 million cash payment in a 2003 Anniston settlement, to which Monsanto's insurers contributed. The sources reviewed do not reconcile the two dates and the two figures.

In June 2020 Bayer announced agreements to resolve major legacy Monsanto litigation. Its announcement listed up to US$10.9 billion for Roundup cancer claims, up to US$400 million for dicamba drift claims and about US$820 million for PCB water claims, and said the agreements were made with no admission of liability. Bloomberg Law reported the PCB part as US$650 million with cities and ports and US$170 million with three states.

In early December 2025 Bayer filed suit against AIG in St. Louis County, Missouri. The complaint concerns excess insurance policies running from June 1967 to April 1986. Bayer said it faced more than US$1.9 billion in PCB settlements by the end of 2024 and more than US$10 billion in Roundup settlements, and that it had sent payment demands in July 2024 (Roundup) and October 2024 (PCBs). The News Tribune reported that the insurer's grounds were not public and that the case was pending.

  1. 2002Anniston PCB case settles for US$700 million, covering more than 20,000 residents (CNN Money)
  2. 2003Solutia filing describes a US$550 million cash payment in the Anniston settlement, to which Monsanto's insurers contributed
  3. 2020June: Bayer announces agreements including about US$820 million for PCB water claims, with no admission of liability
  4. 2024Bayer sends payment demands to insurers: July (Roundup) and October (PCBs)
  5. 2025Early December: Bayer sues AIG in St. Louis County, Missouri; case pending

What was said

Claims, in the words of those who made them.

“meritless excuses and purported defenses”

Bayer's complaint against its insurers, describing their stated grounds, as reported by the News Tribune · December 2025 · News Tribune

Where accounts differ

Each party's account, side by side, with its source. The record does not settle these points; it shows them.

Do Bayer's excess insurance policies cover its PCB settlements?
Company or project
Bayer

Its complaint says AIG refused payment demands for PCB settlements (more than US$1.9 billion by end-2024) and calls the insurers' stated grounds "meritless excuses and purported defenses".

News Tribune
Company or project
AIG

Grounds for refusing cover are not public; no AIG statement is in the record.

News Tribune

How it looked

What was shown, beside what was recorded.

Shown

  • The June 2020 agreements were presented as settlements with no admission of liability.
    Bayer · Bayer

Recorded

  • Anniston PCB claim settled for US$700 million, more than 20,000 residents covered, 2002.
    CNN Money
  • About US$820 million for PCB water claims in Bayer's June 2020 package; US$650 million with cities and ports and US$170 million with three states.
    Bayer
  • More than US$1.9 billion in PCB settlements by end-2024 are at issue in Bayer's suit against AIG, filed December 2025 in St. Louis County, Missouri.
    News Tribune

Who gained

Money that reached nature, beside money that stayed elsewhere.

Reached nature or the ground

Not published
No figure published.

Gained elsewhere

Not totalled
Currency: USD · Window: 2002–2025. All figures cover the same period. * Estimate built from cited figures.

Responses on record

  • bayer (2020-06-24): Announced the June 2020 agreements as settlements with no admission of liability. · Bayer
  • bayer (2025-12): In its complaint, described the insurers' stated grounds for refusing cover as "meritless excuses and purported defenses". · News Tribune

In court and with insurers

Every proceeding and every insurer decision on record.

Lawsuits and rulings

  1. 2002Settled$700m USD million, reported settlement (CNN Money, 2002); a Solutia filing gives a US$550 million cash payment in 2003
    Anniston residents' PCB claim against Monsanto
    Not stated in the record (Anniston, Alabama) · Civil · Anniston, Alabama residents (more than 20,000) → Monsanto

    CNN Money reported in 2002 that the Anniston PCB case settled for US$700 million. Monsanto's insurers contributed to a US$550 million cash payment in the 2003 Anniston settlement, according to a Solutia filing cited in the record. The two accounts are not reconciled. CNN Money

  2. 2020-06Settled$820m USD million, about, PCB water claims (Bayer); Bloomberg Law: 650 with cities and ports, 170 with three states
    PCB water claims settled by Bayer/Monsanto, 2020
    Not stated in the record · Civil · US cities and ports; three states → Monsanto (Bayer)

    On 24 June 2020 Bayer announced agreements including about US$820 million for PCB water claims, alongside up to US$10.9 billion for Roundup cancer claims and up to US$400 million for dicamba drift. Bayer said there was no admission of liability. Bayer

  3. 2025-12–Ongoing$1.9bn USD million, more than, PCB settlements by end-2024 (Roundup settlements more than USD 10 billion)
    Bayer v. AIG over cover for PCB and Roundup settlements
    St. Louis County, Missouri · Civil · Bayer → AIG

    Bayer sued over excess policies running June 1967 to April 1986, after payment demands in July 2024 (Roundup) and October 2024 (PCBs). The insurer's grounds are not public. The case was pending. News Tribune

  4. Outcome not on record$75m USD million, punitive damages awarded in one case (Rose)
    Sky Valley school cases, King County (Washington)
    King County, Washington (jury trials) · Civil · Plaintiffs in the Sky Valley school cases → Pharmacia / Monsanto

    The record notes that King County juries in these cases awarded punitive damages against Pharmacia/Monsanto, for example US$75 million in the Rose case. Dates and later history are not in the record.

Insurers

  1. 2003Paid$550m USD million, cash payment to which insurers contributed; insurers' share not stated
    Monsanto's insurers (not named) → Monsanto

    Monsanto's insurers contributed to the US$550 million cash payment in the 2003 Anniston settlement, according to a Solutia filing cited in the record. Their share is not stated.

  2. 2025In litigation$1.9bn USD million, more than, PCB settlements by end-2024
    AIG → Bayer / Monsanto

    According to Bayer's complaint, AIG did not pay payment demands for PCB settlements of more than US$1.9 billion and Roundup settlements of more than US$10 billion. Bayer sued in St. Louis County, Missouri, in December 2025. AIG's grounds are not public; the case was pending. News Tribune

What nature saw

Outcomes measured on the ground, and nature's note.

Nature's report opens this page. Below: further outcomes measured on the ground.

Anniston settlement, as reported
US$700 million
More than 20,000 residents; CNN Money, 2002
PCB water claims, Bayer 2020
About US$820 million
Cities, ports and three states; Bayer's figure
Insurer cover for later PCB settlements
Disputed
Bayer v. AIG, filed December 2025; pending

What we don't know

Undisclosed, unproven, untried: recorded as data.
Case pending / contestedNo independent ecological evaluation

Nature

  • Not measured Harm to nature: No independent ecological evaluation is on record.

Court

  • Unclear Sky Valley school cases, King County (Washington): outcome not on record.

Accounts

  • Disputed Do Bayer's excess insurance policies cover its PCB settlements?
  • None on record AIG: Grounds for refusing cover are not public; no AIG statement is in the record.

Record

  • None on record Date and amount of the Anniston settlement: the record gives 2002 and US$700 million (CNN Money) and 2003 and a US$550 million cash payment (Solutia filing); the two are not reconciled.
  • Unclear AIG's grounds for refusing cover for the PCB and Roundup settlements: not public as of December 2025; the case is pending.
  • Insufficient Reported but not independently verified: Monsanto was the only US producer of PCBs for four decades.
  • Insufficient Reported but not independently verified: a 1969 Monsanto PCB committee document, as described in secondary coverage, is said to have named continued sales and profits and protection of the company's image among its aims.
  • Insufficient Reported but not independently verified: a 2018 modelling study (Desforges et al., Science) is cited as finding the long-term viability of more than half of the world's orca populations threatened by PCBs.

Did the harm stop?

Not established in the record gathered.

Who paid?

Monsanto, and later Bayer, agreed to the settlements recorded; Monsanto's insurers contributed to the cash payment in the Anniston settlement (extent not stated). For later PCB settlements, Bayer sought payment from AIG, which according to Bayer's complaint refused; the case is pending.

Sources

Voices on record: ✓ Company or project— Government and regulators— Courts✓ Press and investigations— Communities and civil society— Researchers

Company or project

Press and investigations

Connected cases

Related matters, and cases linked to this one through the same organisations, with the role each played in both.
Terms used on this page

Law and courts

Punitive damages
Money a court orders a defendant to pay to punish especially reckless conduct, on top of compensation for losses. Mainly used in US courts.
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