Verification Methodology

How we determine whether a plumber is genuinely available 24/7.

The Problem With Plumber Directories

Most plumber directories list any plumbing business without regard to whether they actually answer emergency calls. A business can claim "24/7 service" in their marketing while only staffing technicians 8 AM–5 PM.

We built a two-signal verification system that uses independently sourced data points to assess genuine availability — not just what a business claims on its website.

Signal 1: Hours Verification

Google Maps business hours are self-reported but publicly verifiable. They are also a harder claim to fake — a business that lists "Open 24 hours" seven days a week has made a public commitment that customers can test and review against.

Our system parses the working_hours field for each business and checks whether every known day of the week is marked "Open 24 hours."

Pass: All known days show "Open 24 hours" (up to 1 missing day tolerated — Outscraper sometimes only returns the current day's hours).

Fail: One or more days show specific business hours (e.g. "8AM–6PM"), or hours data is absent entirely.

Signal 2: Emergency Text Signal

Many legitimate emergency plumbers operate on-call but do not update their Google hours to reflect 24/7 availability. The second signal compensates for this by scanning the business name, service categories, and description for emergency-service language.

Keywords matched include: 24/7, 24-7, 24-hour, 24hr, round-the-clock, emergency, after-hours, anytime, always open.

Pass: Any emergency/24-hour keyword found in name, category, subtypes, or about/description fields.

Fail: No emergency language found in any text field.

Why Two Signals?

Neither signal is fully reliable alone:

Hours only: Some genuine 24/7 plumbers never updated their Google hours. Others mark themselves "Open 24 hours" purely for search visibility without actually answering calls overnight.
Text signal only: "Emergency plumber" in a business name is a common marketing claim even among standard-hours operators.

Together, the signals are significantly more reliable. A business that both maintains "Open 24 hours" hours every day and explicitly describes emergency service is making two independently verifiable public commitments.

Inclusion Criteria

Included — Emergency signals present

Google hours show "Open 24 hours" and/or emergency language appears in the business name, description, or service categories.

Excluded — No emergency indicators

Standard-hours plumbers with no emergency indicators are excluded entirely. This is the majority of plumbers in our source data.

Data Sources & Update Frequency

Business data is sourced from Google Maps via structured queries covering every US city, ZIP code, and metro area. Data is updated periodically — each update re-runs all businesses through the verification filter, so confidence tiers can change as businesses update their hours or descriptions.

If you find an inaccurate listing, contact us and we'll prioritise a refresh.

What We Do Not Verify

Contractor licensing — state-regulated, varies by jurisdiction. Always ask the plumber directly.
Insurance and bonding — verify before work begins.
Real-time availability — verification is based on public data at the time of last update, not live dispatch status.
Pricing — not collected or verified.
Review authenticity — ratings and review counts are sourced from Google Maps and subject to Google's own moderation.