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Check the licence with the state board before work starts.
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Water treatment service in San Jose, CA
There are 29 verified water firms listed in San Jose, CA. Listings are compiled from public business records and checked against the CA contractor licensing; each record shows the date it was last verified.
Verified listings29 verified listingsSpring band $2,500–$6,000CA licence + San Jose permit links
Information last verified: 8 November 2026. Dataset compiled 8 November 2026.
What qualifies as a listing
Sewer lines in San Jose
Water treatment service work in San Jose follows the same pattern as the rest of CA: the failure mode decides the method, not the other way round.
Permit rules in San Jose are set locally. Ask the city whether your job needs a permit and who pulls it.
What water work costs in San Jose
The national range is from the site’s cost guide, checked 2026-11-08. The local column applies the 1.00× metro factor and rounds to $5. It is a planning band, not a quote.
| Job | National range | San Jose planning band | What it includes |
|---|---|---|---|
| Whole-house softener, installed | $2,500–$6,000 | $2,500–$6,000 | Typical US range |
| Whole-house filtration | $3,500–$9,000 | $3,500–$9,000 | Typical US range |
| Well tank replacement | $1,200–$2,800 | $1,200–$2,800 | Typical US range |
| Well pump replacement | $900–$2,200 | $900–$2,200 | Typical US range |
| Reverse osmosis, installed | $3,500–$8,000 | $3,500–$8,000 | Typical US range |
| Annual service, no salt | $150–$400 | $150–$400 | Typical US range |
Editorial metro factor, not a measured price index. The factor is not a measured local price index; it estimates labour and permit overhead. A quote that is far below the band usually has a smaller scope, not a better price.
Licence and permit checks for San Jose
Local permit
San Jose permit office
Ask whether the job needs a permit and who pulls it.
Open the permit office →These links go to the official state or city page. The directory does not file permits and does not verify a contractor’s current insurance for you.
Sewer line firms in San Jose, CA
29 verified records. The order is the dataset order, not a ranking. Each card shows the date its record was last verified.
Verified
De Anza Water Conditioning, Inc
Water treatment service contractor
- Address
- 355 E McGlincy Ln
San Jose, CA - Phone
- (408) 371-5521
- Website
- Not published
- Rating
- 4.9 / 5 · 988 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Rayne Water
Water treatment service contractor
- Address
- 2798 Aiello Dr
San Jose, CA - Phone
- (408) 754-9200
- Website
- Not published
- Rating
- 4.5 / 5 · 51 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
City Water Filter and Hyperbaric
Water treatment service contractor
- Address
- 2798 Aiello Dr
San Jose, CA - Phone
- (408) 658-0333
- Website
- Not published
- Rating
- 4.1 / 5 · 62 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Silicon Valley Advanced Water Purification Center
Water treatment service contractor
- Address
- 4190 Zanker Rd
San Jose, CA - Phone
- (408) 630-3533
- Website
- Not published
- Rating
- 5.0 / 5 · 6 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
The Water Pros, Inc. | Water Filtration| Commercial Dishwashers| Water Purification|Water Softeners| Reverse Osmosis|
Water treatment service contractor
- Address
San Jose, CA- Phone
- (669) 230-3862
- Website
- Not published
- Rating
- 5.0 / 5 · 3 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Soft Patagonian
Water treatment service contractor
- Address
- 630 Giguere Ct
San Jose, CA - Phone
- (408) 307-3380
- Website
- Not published
- Rating
- 4.9 / 5 · 80 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Puretec Industrial Water
Water treatment service contractor
- Address
- 1291 Oakland Rd
San Jose, CA - Phone
- (800) 906-6060
- Website
- Not published
- Rating
- 4.3 / 5 · 6 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kangen water
Water treatment service contractor
- Address
- 714 Harding Ave
San Jose, CA - Phone
- (408) 375-8911
- Website
- Not published
- Rating
- 5.0 / 5 · 29 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
SUEZ - Water Technologies & Solutions
Water treatment service contractor
- Address
- 5900 Silver Creek Valley Rd
San Jose, CA - Phone
- (408) 360-5900
- Website
- Not published
- Rating
- 4.2 / 5 · 6 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Water Plus+ Water Trucks
Water treatment service contractor
- Address
- 1300 Dell Ave
San Jose, CA - Phone
- (408) 370-7130
- Website
- Not published
- Rating
- 4.8 / 5 · 49 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
San José-Santa Clara Regional Wastewater Facility
Water treatment service contractor
- Address
- 700 Los Esteros Rd
San Jose, CA - Phone
- (408) 635-6600
- Website
- Not published
- Rating
- 3.1 / 5 · 30 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Culligan of Santa Clara, CA
Water treatment service contractor
- Address
- 1785 Russell Ave
San Jose, CA - Phone
- (650) 681-1975
- Website
- Not published
- Rating
- 4.2 / 5 · 255 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
California Water Service Group
Water treatment service contractor
- Address
- 1720 N First St
San Jose, CA - Phone
- (408) 367-8200
- Website
- Not published
- Rating
- 3.3 / 5 · 12 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Evo Water Heating & Plumbing
Water treatment service contractor
- Address
San Jose, CA- Phone
- (669) 254-8330
- Website
- Not published
- Rating
- 4.9 / 5 · 43 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
NEWT Water Solutions
Water treatment service contractor
- Address
- 392 E Gish Rd
San Jose, CA - Phone
- (800) 484-0327
- Website
- Not published
- Rating
- Not published
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
RMC Water & Environment
Water treatment service contractor
- Address
- 2290 N First St
San Jose, CA - Phone
- (408) 240-8160
- Website
- Not published
- Rating
- 5.0 / 5 · 4 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Advanced Ion-exchange Services, Inc.
Water treatment service contractor
- Address
- 920 Rincon Cir
San Jose, CA - Phone
- (408) 433-9770
- Website
- Not published
- Rating
- 5.0 / 5 · 1 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kangen Water - San Jose / San Francisco / Bay Area
Water treatment service contractor
- Address
San Jose, CA- Phone
- (408) 550-5236
- Website
- Not published
- Rating
- 5.0 / 5 · 10 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Crystal Water Line
Water treatment service contractor
- Address
San Jose, CA- Phone
- (510) 723-4561
- Website
- Not published
- Rating
- 5.0 / 5 · 30 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Water Inc
Water treatment service contractor
- Address
- 4095 Delmar Ave
San Jose, CA - Phone
- (916) 663-1493
- Website
- Not published
- Rating
- 4.7 / 5 · 174 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
San Jose Creek Water Reclamation Plant
Water treatment service contractor
- Address
- 1955 Workman Mill Rd
San Jose, CA - Phone
- (562) 908-4288
- Website
- Not published
- Rating
- 4.0 / 5 · 2 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Quality Plumbing
Water treatment service contractor
- Address
- 1716 Stone Ave
San Jose, CA - Phone
- (408) 267-9330
- Website
- Not published
- Rating
- 4.7 / 5 · 43 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Lucky Pure Water
Water treatment service contractor
- Address
- 302 N 13th St
San Jose, CA - Phone
- (408) 613-7272
- Website
- Not published
- Rating
- 4.5 / 5 · 42 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Dan's Pure Water
Water treatment service contractor
- Address
- 1020 S White Rd
San Jose, CA - Phone
- (408) 646-7275
- Website
- Not published
- Rating
- 5.0 / 5 · 8 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Solitec Water Processing
Water treatment service contractor
- Address
San Jose, CA- Phone
- (408) 955-9939
- Website
- Not published
- Rating
- Not published
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Heater Specialists
Water treatment service contractor
- Address
- 1141 W San Carlos St
San Jose, CA - Phone
- (408) 402-4044
- Website
- Not published
- Rating
- 4.9 / 5 · 247 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
San Jose Municipal Water System
Water treatment service contractor
- Address
- 3025 Tuers Rd
San Jose, CA - Phone
- (408) 277-3671
- Website
- Not published
- Rating
- 3.9 / 5 · 7 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Best Purified Water
Water treatment service contractor
- Address
- 1781 Hillsdale Ave
San Jose, CA - Phone
- (408) 265-1522
- Website
- Not published
- Rating
- 4.1 / 5 · 56 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Waterflow USA
Water treatment service contractor
- Address
- 7052 Santa Teresa Blvd
San Jose, CA - Phone
- (408) 464-0834
- Website
- Not published
- Rating
- Not published
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Firms in San Jose, CA are shown in the order supplied by the dataset, not by rating or payment. No placement is sold. Each name opens that firm’s own profile page.
How this list was built
The directory starts from public business records: the firm’s own website, its published address and phone number, and the state or city licence register named above. A record is marked verified only when a person has checked the name, address, phone and licence against those sources and recorded the date. The place_id field is kept so a future rebuild can match the same entity without guessing.
The national cost band comes from the site’s cost guide. The metro factor is an editorial estimate, not a survey. No rating, review text, price or availability is invented for a verified page; where a public rating is shown it is attributed and dated.
If a record is wrong, the firm can ask for a correction or removal.Corrections: contact@watertreatmentpro.com. Read the fulllisting verification method.
Water treatment service in San Jose: common questions
How many water firms are listed in San Jose?
29 verified water firms are listed in San Jose, CA. 0 publish a website, and 29 records have been verified. The city page is generated only because the dataset contains at least one genuine listing record; a city with no record has no page.
What does water treatment service cost in San Jose?
The directory’s planning band for a torsion spring replacement is $2,500–$6,000. It is the national range ($2,500–$6,000, checked 2026-11-08) multiplied by an editorial metro factor of 1.00 and rounded to $5. It is an estimate, not a local price survey, and not a quote. Get three written quotes for the same scope.
Does CA license water contractors?
Check the licence with the state board before work starts. The official lookup is the CA contractor licensing, linked on this page. A licence or registration number is a starting point, not a substitute for checking insurance and the scope of the work.
Do I need a permit for a water in San Jose?
Ask whether the job needs a permit and who pulls it. The permit office is the San Jose permit office, linked on this page. If the contractor says no permit is needed, ask them to put the reason in writing.
Water treatment service near San Jose
The closest metros in this directory, by straight-line distance. Each link opens that city’s own cost, licence and permit page.
Guides for San Jose homeowners
What water treatment service costs
Installed ranges by job, and the five lines every quote should show.
Read the guide →Diagnose the problem first
Symptom to cause, what proves it, and what not to do first.
Read the guide →How to choose a contractor
Licence, insurance, warranty and the questions that expose a thin scope.
Read the guide →Compare the options
Repair, replace or change the opening — decided on scope and five-year cost.
Read the guide →Browse the whole directory.
All service areas ·All CA service areas ·Cost guides ·Methodology