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Public evidence profile · Checked May 2026

Water Quality Plumbing

PlumberSan Jose4.5349 reviews · 1 independent public source
Credentials & registries
2 credentials shown

No Trust Score yet

  • Rated 4.5 from 349 reviews
  • 2 credentials shown

Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.

Call (408) 267-9330
Reviews · public evidence

What customers say

These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.

4.5out of 5
349 reviews in public evidence
Where these reviews are published
  • Porch349 reviews · 4.5 avg
Local context

Rated 4.5, above the local average for plumbers in San Jose

Across 10 plumbers in San Jose, the typical rating is 4.2 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.

Credentials and associations

Credentials and memberships

2

These credentials and memberships are attributed to named public sources. Check the source before relying on them.

California Contractors State License BoardCurrent: Active
License number
305018
Licensed for
Plumbing, Water Conditioning
First issued
1975
Valid through
Feb 2028
Bond
Bonded $25,000
Source checked
Jul 28, 2026
Open this license entry (opens in new tab)
Sources

Where this information comes from

3 named public sources

Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.

Review sources

Registers and membership directories

Public evidence last checked May 2026

About

San Jose, Campbell, Santa Clara and Los Gatos are good communities to be a property owner. All of us would like to get rid of the agitation of plumbing problems. Water Quality Plumbing is locally held & operated. Your 100% happiness is our main purpose.

Your own checks

What to check before you hire

Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Agree the callout fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints.
Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemized quote (parts and labor separately) before agreeing to major work.
Gas work is licensed separately from general plumbing in most states. Make sure anyone working on a gas appliance or gas line is licensed for gas work under your state's rules, and ask for proof of that license before they start.

Want an extra legitimacy check? Run the Rogue Contractor Check on Water Quality Plumbing before you contact them.

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Good to know

Common questions about Water Quality Plumbing

Is Water Quality Plumbing a legitimate business?

Water Quality Plumbing has 349 independent public reviews, rated 4.5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.

What do customers say about Water Quality Plumbing?

Water Quality Plumbing has 349 public reviews, averaging 4.5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.

How do I know Water Quality Plumbing's reviews are genuine?

Water Quality Plumbing's 349 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.

Is Water Quality Plumbing qualified and accredited?

We hold 2 independently sourced credentials for Water Quality Plumbing, including California Contractors State License Board, US EPA Lead Renovation, Repair and Painting Program. Each is attributed to the body that issued it in the credentials section. For example, California Contractors State License Board is California's Contractors State License Board: the state body you must be licensed with to do contracting work in California.

Compare your options

More plumbers in San Jose

These options match the same trade in San Jose. Compare the public evidence on each profile before you decide.

See all plumbers in San Jose