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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov. See Terms

    Summary of DBP Quarterly Report

    Metadata Updated: December 27, 2025

    The data tables summarizes the disinfection by-product results for TTHM and HAA5 from distribution sites and calculated compliance values for each quarter

    (a) : analyzed by EPA Method 524.3
    (b) : analyzed by EPA Method 552.3
    LRAA: The Locational Running Annual Average (LRAA) is calculated by taking the value of this quarter and the three previous consecutive quarters.
    RAA: The System-wide Running Annual Average (RAA) is calculated by taking the average of the Quarterly Average of this quarter and the three previous consecutive quarters.
    OEL: The Operational Evalution Level (OEL) is calculated by averaging 2 times this quarter's value and the two previous consecutive quarters.
    Both the LRAA and the System-wide RAA is not to exceed 80 µg/L for TTHM and 60 µg/L for HAA5.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. See Terms License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date November 10, 2020
    Metadata Updated Date December 27, 2025

    Metadata Source

    Harvested from NYC JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 10, 2020
    Metadata Updated Date December 27, 2025
    Publisher data.cityofnewyork.us
    Maintainer
    Identifier https://data.cityofnewyork.us/api/views/33c5-b922
    Data First Published 2018-09-12
    Data Last Modified 2025-12-16
    Category Environment
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.cityofnewyork.us/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id dcb7cd76-d479-42e0-96bf-fb070782793e
    Harvest Source Id 1696593e-c691-4f61-a696-5dcb9e4c9b4c
    Harvest Source Title NYC JSON
    Homepage URL https://data.cityofnewyork.us/d/33c5-b922
    Source Datajson Identifier True
    Source Hash 5f95b2b00a7e3533a61921dc8d26d6bd29c6f6d173560f8156975211b4e90ec5
    Source Schema Version 1.1

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