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

    TTHM LRAA Data

    Metadata Updated: November 1, 2025

    Total Trihalomethanes (TTHMs) are regulated by the Safe Drinking Water Act through the Stage 2 Disinfectant Byproduct Rule. The City of Bloomington Utilities collects monthly samples at 8 testing locations throughout the distribution system and follows a quarterly compliance schedule. Compliance is calculated on a Locational Running Annual Average (LRAA). The Maximum Contaminant Level for TTHMs is 80 µg/l. Micrograms per liter (µg/l) is equal to parts per billion (ppb). One part per billion is roughly equal to a teaspoon of water in an Olympic-size swimming pool.

    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: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date May 20, 2023
    Metadata Updated Date November 1, 2025

    Metadata Source

    Harvested from Bloomington Indiana Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 20, 2023
    Metadata Updated Date November 1, 2025
    Publisher data.bloomington.in.gov
    Maintainer
    Identifier https://data.bloomington.in.gov/api/views/k64r-tvha
    Data First Published 2022-03-07
    Data Last Modified 2025-10-30
    Category Utilities & Water
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.bloomington.in.gov/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 dd0b2760-bca0-4f9f-888a-c31e64226d19
    Harvest Source Id 59bba0d6-a855-49e0-bf4b-18a907bd3aba
    Harvest Source Title Bloomington Indiana Data.json
    Homepage URL https://data.bloomington.in.gov/d/k64r-tvha
    License http://opendatacommons.org/licenses/pddl/1.0/
    Source Datajson Identifier True
    Source Hash 2eeaf2b6704d5c7bc2c6e9e164573b99c33ddfce64659e7ea05dbbca86385a2a
    Source Schema Version 1.1

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