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Investment treaty awardUnpaid

Webuild (Impregilo) v. Argentina (2011 water award)

Buenos Aires province water concession

Headline amount
$21.3MPrincipal
Respondent
ArgentinaState
Awarded
Jun 21, 2011
Status
UnpaidNothing collected

Latest development Oct 15, 2026

Argentina’s D.C. Circuit appeal remains pending (latest clerk order October 15, 2026).

The award

Amount awarded
$21.3M plus 6% interest compounded annually from July 11, 2006
Award holder
Webuild S.p.A. (formerly Impregilo S.p.A.)
Respondent
Argentine Republic
Forum
ICSID ARB/07/17 · Italy–Argentina BIT

Challenges

An ICSID ad hoc committee dismissed Argentina’s annulment application on January 24, 2014. Argentina appealed the D.D.C. judgment (D.C. Cir. No. 25-7066) after the court rejected its statute-of-limitations defense.

Enforcement

D.D.C. No. 21-cv-2464 (Judge Walton) confirmed the award on April 4, 2025 and entered judgment for the principal, 6% compound interest to the date of judgment, and post-judgment interest.

Recovered to date

None reported.

Notes

Distinct from the 2025 Rosario–Victoria bridge award already listed. The watchlist figure of about $54M with interest is not verified.