Speedway flagged by IDEM for high ammonia levels after sold-out Indy 500 crowd Listing.Press

The sold-out Indianapolis 500 challenges Speedway's wastewater plant for the fifth year in a row.

Source: WTHR

Indexed: Wed, 26 Aug 2026 22:03:45 UTC

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Speedway flagged by IDEM for high ammonia levels after sold-out Indy 500 crowd