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CA contractor licensing
Check the licence with the state board before work starts.
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Water treatment service in Oakland, CA
There are 27 verified water firms listed in Oakland, 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 listings27 verified listingsSpring band $2,500–$6,000CA licence + Oakland permit links
Information last verified: 8 November 2026. Dataset compiled 8 November 2026.
What qualifies as a listing
Sewer lines in Oakland
Water treatment service work in Oakland follows the same pattern as the rest of CA: the failure mode decides the method, not the other way round.
Permit rules in Oakland are set locally. Ask the city whether your job needs a permit and who pulls it.
What water work costs in Oakland
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 | Oakland 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 Oakland
Local permit
Oakland 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 Oakland, CA
27 verified records. The order is the dataset order, not a ranking. Each card shows the date its record was last verified.
Verified
Fantastica Water Solutions
Water treatment service contractor
- Address
- 27365 Industrial Blvd
Oakland, CA - Phone
- (510) 241-5707
- Website
- Not published
- Rating
- 4.9 / 5 · 36 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
SERVPRO of West Oakland
Water treatment service contractor
- Address
Oakland, CA- Phone
- (510) 852-9267
- Website
- Not published
- Rating
- 4.9 / 5 · 38 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kinetico by AAA Water Systems, Inc.
Water treatment service contractor
- Address
- 4050 Pike Ln
Oakland, CA - Phone
- (800) 990-9191
- Website
- Not published
- Rating
- 4.9 / 5 · 475 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Magnation Water Technologies
Water treatment service contractor
- Address
- 660 4th St
Oakland, CA - Phone
- (888) 820-0363
- Website
- Not published
- Rating
- 4.8 / 5 · 16 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Sweetwater LLC
Water treatment service contractor
- Address
Oakland, CA- Phone
- (866) 691-4214
- Website
- Not published
- Rating
- 5.0 / 5 · 7 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
ThankYouWater
Water treatment service contractor
- Address
Oakland, CA- Phone
- (510) 466-1129
- Website
- Not published
- Rating
- 5.0 / 5 · 13 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Upper San Leandro Water Treatment Plant
Water treatment service contractor
- Address
- 7700 Greenly Dr
Oakland, CA - Phone
- (866) 403-2683
- Website
- Not published
- Rating
- 5.0 / 5 · 2 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Oakland Pure Water
Water treatment service contractor
- Address
- 839 International Blvd
Oakland, CA - Phone
- (510) 693-0188
- Website
- Not published
- Rating
- 4.0 / 5 · 23 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Puretec Industrial Water
Water treatment service contractor
- Address
- 1291 Oakland Rd
Oakland, 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
Pure Water Inc
Water treatment service contractor
- Address
- 4095 Delmar Ave
Oakland, 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
FreshPure Waters - Whole Foods - Oakland Water Refill Station
Water treatment service contractor
- Address
- 230 Bay Pl
Oakland, CA - Phone
- (800) 571-5200
- Website
- Not published
- Rating
- 5.0 / 5 · 1 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
EB MUD
Water treatment service contractor
- Address
- 2020 Wake Ave
Oakland, CA - Phone
- (866) 403-2683
- Website
- Not published
- Rating
- 4.7 / 5 · 26 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Puronics of NorCal
Water treatment service contractor
- Address
- 7425 Southfront Rd
Oakland, CA - Phone
- (925) 489-0625
- Website
- Not published
- Rating
- 4.6 / 5 · 493 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Blue Planet Water Services, Inc.
Water treatment service contractor
- Address
- 2992 Spring St
Oakland, CA - Phone
- (650) 366-8844
- Website
- Not published
- Rating
- 4.0 / 5 · 40 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Roto-Rooter Plumbing & Water Cleanup
Water treatment service contractor
- Address
Oakland, CA- Phone
- (510) 564-1214
- Website
- Not published
- Rating
- 4.8 / 5 · 2745 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Dig Cooperative Inc.
Water treatment service contractor
- Address
- 2505 Magnolia St
Oakland, CA - Phone
- (510) 560-4865
- Website
- Not published
- Rating
- 4.9 / 5 · 16 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Damage Restoration Oakland
Water treatment service contractor
- Address
- 1801 Brandon St
Oakland, CA - Phone
- (510) 390-8425
- Website
- Not published
- Rating
- 5.0 / 5 · 11 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
FreshPure Waters - Farmer Joe's Marketplace Water Refill Station
Water treatment service contractor
- Address
- 3426 Fruitvale Ave
Oakland, CA - Phone
- (800) 571-5200
- Website
- Not published
- Rating
- 5.0 / 5 · 1 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Rayne Water
Water treatment service contractor
- Address
- 2798 Aiello Dr
Oakland, 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
San Leandro Water Treatment
Water treatment service contractor
- Address
- 3000 Davis St
Oakland, CA - Phone
- (510) 577-3434
- Website
- Not published
- Rating
- Not published
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
EBMUD
Water treatment service contractor
- Address
- 375 11th St
Oakland, CA - Phone
- (866) 403-2683
- Website
- Not published
- Rating
- 2.6 / 5 · 93 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
North Bay Water Services Inc.
Water treatment service contractor
- Address
- 4238 Lozano Ln
Oakland, CA - Phone
- (707) 745-8823
- Website
- Not published
- Rating
- 4.7 / 5 · 233 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
California Water Environment Association
Water treatment service contractor
- Address
- 7677 Oakport St
Oakland, CA - Phone
- (510) 382-7800
- Website
- Not published
- Rating
- 4.0 / 5 · 3 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Quality Control Board
Water treatment service contractor
- Address
- 1515 Clay St
Oakland, CA - Phone
- (510) 622-2300
- Website
- Not published
- Rating
- 3.5 / 5 · 6 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Firms in Oakland, 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 Oakland: common questions
How many water firms are listed in Oakland?
27 verified water firms are listed in Oakland, CA. 0 publish a website, and 24 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 Oakland?
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 Oakland?
Ask whether the job needs a permit and who pulls it. The permit office is the Oakland 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 Oakland
The closest metros in this directory, by straight-line distance. Each link opens that city’s own cost, licence and permit page.
Guides for Oakland 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