Chicago Beach Swim Advisories Based on Predicted E. coli Levels

Historical-only data on swim advisories issued by the Chicago Park District for Lake Michigan beaches. Advisories are based on predicted E. coli levels exceeding 235 Colony Forming Units per 100 ml of water. The dataset is linked to related data sources for prediction inputs and later measured levels.

Use Cases

• Predictive model validation based on the relationship between predicted and measured E. coli levels.
• Public health policy analysis based on the issuance of swim advisories.
• Historical trend analysis of beach water quality based on advisory records.
• Environmental risk assessment based on E. coli concentration thresholds.

Strengths

• Advisories are issued based on a specific, quantitative threshold of 235 CFU per 100 ml.
• Linked to three distinct City of Chicago datasets for prediction inputs and measured outcomes.
• Managed by the authoritative Chicago Park District organization.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is marked as historical-only, with a newer version available starting in 2017.

Provenance

Source

City of Chicago

Freshness

Last updated 2026-03-15 03:03:15.102383; freshness should be verified.

Geography

Chicago Lake Michigan lakefront beaches