← Top 100 Plumbing in the San Francisco Bay Area

Plumbing Companies in South Bay & Silicon Valley — Graded

All 48 graded plumbing companies in South Bay & Silicon Valley, California, in market rank order. Same published formula, no paid placements. Data current as of 2026-10-25.

1
81AI ScoreTop 1%
Bay Area Backflow Inc
Gilroy · Website
Legitimacy96
Online action70
Reviewsno data yet
Coverage 35% · 2026-10-25
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4
73AI ScoreTop 3%
Water Quality Plumbing
San Jose · Website
Legitimacy97
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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10
71AI ScoreTop 6%
All Temperature Service Air Conditioning
San Jose · Website
Legitimacy93
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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17
71AI ScoreTop 10%
Plumbing America, Inc.
Gilroy · Website
Legitimacy93
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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18
71AI ScoreTop 10%
Saratoga Plumbing Supply
San Jose · Website
Legitimacy93
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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20
71AI ScoreTop 12%
The Backflow Guy
Morgan Hill · Website
Legitimacy93
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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21
71AI ScoreTop 12%
Venture Plumbing
San Jose · Website
Legitimacy93
Online action55
Reviewsno data yet
Coverage 35% · 2026-10-25
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24
70AI ScoreTop 14%
KDS Plumbing Inc
San Jose · Website
Legitimacy93
Online action52
Reviewsno data yet
Coverage 35% · 2026-10-25
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25
69AI ScoreTop 14%
A & A Plumbing
Sunnyvale · Website
Legitimacy96
Online action49
Reviewsno data yet
Coverage 35% · 2026-10-25
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26
69AI ScoreTop 15%
Affordable Plumbing Solutions
San Jose · Website
Legitimacy96
Online action49
Reviewsno data yet
Coverage 35% · 2026-10-25
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29
69AI ScoreTop 17%
Enriquez Plumbing
San Jose · Website
Legitimacy96
Online action49
Reviewsno data yet
Coverage 35% · 2026-10-25
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31
69AI ScoreTop 18%
Plumb One Plumbing
San Jose · Website
Legitimacy96
Online action49
Reviewsno data yet
Coverage 35% · 2026-10-25
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35
68AI ScoreTop 20%
Superior Plumbing & Drain Cleaning Services - San Jose
San Jose · Website
Legitimacy93
Online action49
Reviewsno data yet
Coverage 35% · 2026-10-25
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36
64AI ScoreTop 20%
Aqualine Piping
San Jose · Website
Legitimacy97
Online action40
Reviewsno data yet
Coverage 35% · 2026-10-25
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37
64AI ScoreTop 21%
Giant Plumbing
San Jose · Website
Legitimacy96
Online action40
Reviewsno data yet
Coverage 35% · 2026-10-25
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45
63AI ScoreTop 25%
Gogo Rooter Plumbing
San Jose · Website
Legitimacy93
Online action40
Reviewsno data yet
Coverage 35% · 2026-10-25
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46
63AI ScoreTop 26%
Jtr Plumbing
Gilroy · Website
Legitimacy93
Online action40
Reviewsno data yet
Coverage 35% · 2026-10-25
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53
57AI ScoreTop 30%
De Anza Water Conditioning, Inc
Campbell · Website
Legitimacy100
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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56
56AI ScoreTop 31%
Consolidated Plumbing Inc.
San Jose · Website
Legitimacy97
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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57
56AI ScoreTop 32%
Mike Counsil Plumbing LLC
San Jose · Website
Legitimacy97
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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58
56AI ScoreTop 33%
Palo Alto Plumbing Heating & Air
Palo Alto · Website
Legitimacy97
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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59
55AI ScoreTop 33%
1 Hour Drain
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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60
55AI ScoreTop 34%
A & W Plumbing
Los Gatos · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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61
55AI ScoreTop 34%
A.l. Plumbing
San Martin · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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63
55AI ScoreTop 35%
Advanced Quality Plumbing
Morgan Hill · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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65
55AI ScoreTop 36%
Aquatek Plumbing Inc.
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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68
55AI ScoreTop 38%
Bc Plumbing
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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74
55AI ScoreTop 41%
Cms Plumbing
Campbell · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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82
55AI ScoreTop 46%
Eldridge & Sons Plumbing
Campbell · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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85
55AI ScoreTop 47%
Ferguson Enterprises
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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100
55AI ScoreTop 56%
Lyons Brothers Plumbing
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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102
55AI ScoreTop 57%
Master Plumbing & Sewer Inc
Sunnyvale · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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104
55AI ScoreTop 58%
Miracle Plumbing Inc.
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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105
55AI ScoreTop 59%
Moomau Plumbing
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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110
55AI ScoreTop 61%
Plumb Perfect, Inc.
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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115
55AI ScoreTop 64%
Rayne Plumbing & Sewer Service, Inc.
San Jose · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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116
55AI ScoreTop 65%
Reilly's Plumbing Co.
Gilroy · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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129
55AI ScoreTop 72%
Thomas Plumbing Inc.
Morgan Hill · Website
Legitimacy96
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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132
54AI ScoreTop 73%
Abound Plumbing Inc.
San Martin · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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133
54AI ScoreTop 74%
Advanced Repipe Specialist
Gilroy · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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139
54AI ScoreTop 77%
Cupertino Plumbing
San Jose · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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141
54AI ScoreTop 78%
Elite Rooter San Jose
San Jose · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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144
54AI ScoreTop 80%
Fix-it Plumbing
Milpitas · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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145
54AI ScoreTop 81%
Freedom Underground Plumbing
San Jose · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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146
54AI ScoreTop 81%
Genmor Plumbing, Inc.
San Jose · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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152
54AI ScoreTop 84%
San Jose Plumbing Inc.
San Jose · Website
Legitimacy93
Online action25
Reviewsno data yet
Coverage 35% · 2026-10-25
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162
41AI ScoreTop 90%
Frank's Plumbing Co Inc
Morgan Hill
Legitimacy96
Online action0
Reviewsno data yet
Coverage 35% · 2026-10-25
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175
40AI ScoreTop 97%
Blossom Valley Plumbing
San Jose
Legitimacy93
Online action0
Reviewsno data yet
Coverage 35% · 2026-10-25
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How the AI Score works

Every company carries an AI Score from 1–100, computed by one published formula from the signals measurable today — legitimacy and online action, verified across at least two independent sources (open place datasets and public registries). The formula's other factors — blended reviews, complaint record, and responsiveness — carry no weight in the score until licensed data sources for them exist. When they land, the score re-spreads across the full formula.

One disclosed exception: a score of 100 is reserved for RankMyCompany clients; every other score is computed by the same formula for everyone. Scores are not spread artificially — companies with identical measured data share identical scores — and each listing also shows its rank and its percentile within its category.

Missing-data rule: when a factor has no lawful data source for a company yet, its weight redistributes proportionally across the factors that do have data, and every score shows its data-coverage %. Coverage rises as licensed sources are added; scores are recomputed monthly and score history is kept for every company.

No score is ever adjusted by hand, sold, or removed for payment. Companies marked RMC Client are scored by the exact same formula as everyone else — the 100 cap above is the only exception, and it is disclosed here rather than hidden. If your company's underlying data is wrong, file a correction on the dispute page — disputes fix the data, and the corrected data flows into the next ranking run.

Place data: © OpenStreetMap contributors (ODbL) and Overture Maps Foundation (CDLA Permissive 2.0). Listings are refreshed monthly; a score change from a refresh takes effect only after the new score holds for two consecutive runs. Formula changes are published as a new methodology version — never applied silently.

Read the full standard — The RMC Standard →