# Andy's Plumbing & Drain Services

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 1 of 5 capability checks passed.

- host: andysplumbingla.com
- url: https://andysplumbingla.com/
- category: plumber
- type: business
- country: US
- locations: Pasadena, Glendale, Atwater Village, Silver Lake, Eagle Rock, Mount Washington, Los Angeles, North Hollywood, Burbank, Studio City, Sherman Oaks, Encino, Van Nuys, San Fernando Valley, Culver City, Westwood, Brentwood, Pacific Palisades, Thousand Oaks, Newbury Park, Agoura Hills, United States
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 1 of 5 checks passed.

- PASS — Markdown negotiation
- fail — Markdown twin at a predictable URL
- fail — llms.txt
- fail — API catalog
- fail — MCP server answers

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **contact** — "(818) 814-8494"

## Summary

Licensed Los Angeles plumbers offering drain cleaning, leak detection, water heaters, sewer and gas line services with same-day availability.

## Context

3040 sites in this index share the type "business"; 1936 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark