State licence
CA contractor licensing
Check the licence with the state board before work starts.
Open the official lookup →Water treatment service near me
Enter your ZIP code, or let the browser find your location. We sort the service areas by straight-line distance and give you the nearest ones first. Nothing is sent to a server and nothing is tracked.
Water treatment service in Los Angeles, CA
There are 26 verified water firms listed in Los Angeles, 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 listings26 verified listingsSpring band $2,500–$6,000CA licence + Los Angeles permit links
Information last verified: 8 November 2026. Dataset compiled 8 November 2026.
What qualifies as a listing
Sewer lines in Los Angeles
Water treatment service work in Los Angeles follows the same pattern as the rest of CA: the failure mode decides the method, not the other way round.
Permit rules in Los Angeles are set locally. Ask the city whether your job needs a permit and who pulls it.
What water work costs in Los Angeles
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 | Los Angeles 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 Los Angeles
Local permit
Los Angeles 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 Los Angeles, CA
26 verified records. The order is the dataset order, not a ranking. Each card shows the date its record was last verified.
Verified
LA Water Solutions, Inc.
Water treatment service contractor
- Address
- 9830 Foothill Blvd
Los Angeles, CA - Phone
- (626) 497-0845
- Website
- Not published
- Rating
- 4.9 / 5 · 323 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Crystal Clear Water
Water treatment service contractor
- Address
- 10651 Hazard Ave
Los Angeles, CA - Phone
- (888) 509-2837
- Website
- Not published
- Rating
- 5.0 / 5 · 424 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Crystal Clear Water LLC
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (888) 509-2837
- Website
- Not published
- Rating
- 5.0 / 5 · 196 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
LifeSource Water Systems, Inc.
Water treatment service contractor
- Address
- 911 E Colorado Blvd
Los Angeles, CA - Phone
- (626) 792-9996
- Website
- Not published
- Rating
- 4.9 / 5 · 1936 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Aqua
Water treatment service contractor
- Address
- 2230 S Huron Dr
Los Angeles, CA - Phone
- (714) 432-9996
- Website
- Not published
- Rating
- 4.8 / 5 · 91 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pro Water Solutions, Inc.
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (888) 904-4453
- Website
- Not published
- Rating
- 5.0 / 5 · 52 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
LIMA Water Systems
Water treatment service contractor
- Address
- 8529 Cashio St
Los Angeles, CA - Phone
- (424) 239-2654
- Website
- Not published
- Rating
- 5.0 / 5 · 107 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Puroserve
Water treatment service contractor
- Address
- 6953 Canoga Ave
Los Angeles, CA - Phone
- (818) 456-1960
- Website
- Not published
- Rating
- 4.9 / 5 · 100 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pacific Coast Water Systems
Water treatment service contractor
- Address
- 1260 N Sunshine Way
Los Angeles, CA - Phone
- (714) 871-2442
- Website
- Not published
- Rating
- 4.8 / 5 · 59 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Hague Quality Water
Water treatment service contractor
- Address
- 9928 Flower St
Los Angeles, CA - Phone
- (562) 461-0777
- Website
- Not published
- Rating
- 4.9 / 5 · 148 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pro Filtration Water Systems
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (714) 794-2649
- Website
- Not published
- Rating
- 5.0 / 5 · 22 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
MCS Water Technology Corporation Rowland Heights
Water treatment service contractor
- Address
- 18340 Colima Rd
Los Angeles, CA - Phone
- (626) 935-8818
- Website
- Not published
- Rating
- 4.9 / 5 · 512 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Drinking Water Los Angeles
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (818) 212-0325
- Website
- Not published
- Rating
- 4.8 / 5 · 11 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
MCS Water Technology Corporation San Gabriel
Water treatment service contractor
- Address
- 421 E Valley Blvd
Los Angeles, CA - Phone
- (626) 288-4833
- Website
- Not published
- Rating
- 4.9 / 5 · 668 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
truClear Water Filtration Co.
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (714) 515-2381
- Website
- Not published
- Rating
- 5.0 / 5 · 33 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
AmeriFree Water Inc.
Water treatment service contractor
- Address
- 2102 Business Center Dr
Los Angeles, CA - Phone
- (888) 842-3373
- Website
- Not published
- Rating
- 4.9 / 5 · 94 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Service Elite Inc.
Water treatment service contractor
- Address
- 10005 Muirlands Blvd
Los Angeles, CA - Phone
- (949) 491-5891
- Website
- Not published
- Rating
- 5.0 / 5 · 12 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Water 1
Water treatment service contractor
- Address
- 2708 Wilshire Blvd
Los Angeles, CA - Phone
- (888) 755-2000
- Website
- Not published
- Rating
- 4.9 / 5 · 95 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Special T Water Systems Inc.
Water treatment service contractor
- Address
- 11934 Washington Blvd
Los Angeles, CA - Phone
- (562) 945-7595
- Website
- Not published
- Rating
- 4.7 / 5 · 56 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water₂O
Water treatment service contractor
- Address
- 5632 Washington Blvd
Los Angeles, CA - Phone
- (310) 694-0220
- Website
- Not published
- Rating
- 5.0 / 5 · 13 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Santa Monica Water Treatment
Water treatment service contractor
- Address
- 1228 S Bundy Dr
Los Angeles, CA - Phone
- (310) 826-6712
- Website
- Not published
- Rating
- 2.3 / 5 · 8 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
AquaRemedy CA Smart Water Filters and Softeners
Water treatment service contractor
- Address
- 15233 Ventura Blvd
Los Angeles, CA - Phone
- (818) 658-2558
- Website
- Not published
- Rating
- 5.0 / 5 · 18 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Next Level H2o
Water treatment service contractor
- Address
- 3705 W Pico Blvd
Los Angeles, CA - Phone
- (213) 600-2919
- Website
- Not published
- Rating
- 4.6 / 5 · 10 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kinetico Water Systems By Basic Technology
Water treatment service contractor
- Address
- 15500 Erwin St
Los Angeles, CA - Phone
- (213) 430-5522
- Website
- Not published
- Rating
- 4.8 / 5 · 86 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pier Water Solutions
Water treatment service contractor
- Address
Los Angeles, CA- Phone
- (310) 363-0139
- Website
- Not published
- Rating
- 4.9 / 5 · 40 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Oceanic Water Systems
Water treatment service contractor
- Address
- 13340 Saticoy St
Los Angeles, CA - Phone
- (661) 575-0033
- Website
- Not published
- Rating
- 3.4 / 5 · 27 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Firms in Los Angeles, 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 Los Angeles: common questions
How many water firms are listed in Los Angeles?
26 verified water firms are listed in Los Angeles, CA. 0 publish a website, and 26 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 Los Angeles?
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 Los Angeles?
Ask whether the job needs a permit and who pulls it. The permit office is the Los Angeles 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 Los Angeles
The closest metros in this directory, by straight-line distance. Each link opens that city’s own cost, licence and permit page.
Guides for Los Angeles 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