Bestopedia Rankings

Best Plumbers in Walnut, California

Ranked by the Bestopedia Trust Score, drawn from verified CSLB license, bond, and workers’-comp records. Rankings are earned — never for sale.

Last updated July 8, 2026

  1. United Riggers & Erectors Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  2. Phillips G Plumbing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  3. La Habra Fire Protection and Plumbing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  4. A Drain Doctor

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  5. Mtec

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  6. John the Plumber

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  7. Hwang Dong Tsair

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  8. Bruce's Plumbing Service

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    95 / 100 Trust Score

  9. Joellson Michael

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    91 / 100 Trust Score

  10. Pomona Valley Plumbing Heating Air Conditioning Co Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    90 / 100 Trust Score

noun /best-oh-PEE-dee-uh/

a curated ranking of the best in any category, based on independent review.