NYC Drinking Water Tank Self-Inspection Reports

Self-reported inspection results for drinking water tanks in New York City buildings, submitted by certified inspectors on behalf of building owners. The dataset is maintained by the NYC Department of Health and Mental Hygiene (DOHMH) and was last updated in April 2026. Submissions reporting zero water tanks are excluded.

Use Cases

• Predict `MEET_STANDARDS` status using features like `GI_RESULT_INTERNAL_STRUCTURE`, `SI_RESULT_SEDIMENT`, and `ECOLI` test results.
• Analyze geographic patterns of inspection outcomes by `BOROUGH`, `ZIP`, or `COMMUNITY_BOARD` using `LATITUDE` coordinates.
• Track inspection trends over time using `INSPECTION_DATE` and `REPORTING_YEAR` columns.
• Identify common failure points by correlating `GI_RESULT_AIR_VENTS`, `SI_RESULT_RODENT_BIRD`, and `SI_REQ_DEBRIS_INSECTS` results.

Strengths

• Contains over 25 specific inspection result and requirement columns, including `GI_RESULT_INTERNAL_STRUCTURE` and `SI_RESULT_SEDIMENT`.
• Includes geospatial columns (`LATITUDE`, `ZIP`, `BOROUGH`) for location-based analysis.
• Data is sourced from an official NYC Department of Health and Mental Hygiene (DOHMH) reporting system.

Limitations

• Sample size and row count are unknown, limiting assessment of statistical power.
• Data is self-reported by inspectors, which may introduce reporting bias or inconsistency.
• Temporal coverage (`INSPECTION_DATE` range) and update frequency are unspecified.

Provenance

Source

NYC Department of Health and Mental Hygiene (DOHMH).

Collection Method

Self-inspections reported via the NYC Drinking Water Tank Inspection Reporting Site by certified inspectors.

Freshness

Last updated April 2026.

Geography

New York City, USA.