State licence
HI contractor licensing
Check the licence with the state board before work starts.
Open the official lookup →Water treatment service near me
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Water treatment service in Honolulu, HI
There are 30 verified water firms listed in Honolulu, HI. Listings are compiled from public business records and checked against the HI contractor licensing; each record shows the date it was last verified.
Verified listings30 verified listingsSpring band $2,500–$6,000HI licence + Honolulu permit links
Information last verified: 8 November 2026. Dataset compiled 8 November 2026.
What qualifies as a listing
Sewer lines in Honolulu
Water treatment service work in Honolulu follows the same pattern as the rest of HI: the failure mode decides the method, not the other way round.
Permit rules in Honolulu are set locally. Ask the city whether your job needs a permit and who pulls it.
What water work costs in Honolulu
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 | Honolulu 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 Honolulu
Local permit
Honolulu 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 Honolulu, HI
30 verified records. The order is the dataset order, not a ranking. Each card shows the date its record was last verified.
Verified
Water Group 7
Water treatment service contractor
- Address
Honolulu, HI- Phone
- (808) 732-9777
- Website
- Not published
- Rating
- 5.0 / 5 · 24 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
SERVPRO of Central Honolulu, Kapolei
Water treatment service contractor
- Address
Honolulu, HI- Phone
- (808) 909-8281
- Website
- Not published
- Rating
- 4.9 / 5 · 300 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Water Solutions Inc
Water treatment service contractor
- Address
- 2045 Lauwiliwili St
Honolulu, HI - Phone
- (808) 487-5375
- Website
- Not published
- Rating
- 5.0 / 5 · 2 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Hawaiian Cool Water, LLC
Water treatment service contractor
- Address
- 2002 Homerule St
Honolulu, HI - Phone
- (808) 755-2369
- Website
- Not published
- Rating
- 4.3 / 5 · 24 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Eco Clean Hawaii
Water treatment service contractor
- Address
- 620 Dillingham Blvd
Honolulu, HI - Phone
- (808) 783-9225
- Website
- Not published
- Rating
- 4.9 / 5 · 168 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pural Water Specialty Co
Water treatment service contractor
- Address
- 405 Maikoiko St
Honolulu, HI - Phone
- (808) 488-8434
- Website
- Not published
- Rating
- 4.4 / 5 · 7 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
HYDRATE HAWAII LLC
Water treatment service contractor
- Address
- 1777 Ala Moana Blvd
Honolulu, HI - Phone
- (808) 348-0155
- Website
- Not published
- Rating
- 5.0 / 5 · 1 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
AAA BestWater Co
Water treatment service contractor
- Address
- 2002 Homerule St
Honolulu, HI - Phone
- (808) 954-9638
- Website
- Not published
- Rating
- 5.0 / 5 · 9 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Blessed & Beautiful Kangen Water LLC
Water treatment service contractor
- Address
- 3457 Waialae Ave
Honolulu, HI - Phone
- (808) 501-9878
- Website
- Not published
- Rating
- 5.0 / 5 · 22 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Home 808
Water treatment service contractor
- Address
- 1287 Kalani St
Honolulu, HI - Phone
- (808) 367-0328
- Website
- Not published
- Rating
- 5.0 / 5 · 30 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Hano Naka Inc
Water treatment service contractor
- Address
- 1245 Young St
Honolulu, HI - Phone
- (808) 596-2555
- Website
- Not published
- Rating
- 5.0 / 5 · 13 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
SERVPRO of Downtown Honolulu/Team Maras
Water treatment service contractor
- Address
- 1164 Bishop St
Honolulu, HI - Phone
- (808) 900-7647
- Website
- Not published
- Rating
- 4.9 / 5 · 116 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Aloha Kangen Water
Water treatment service contractor
- Address
- 1344 Young St
Honolulu, HI - Phone
- (808) 388-2195
- Website
- Not published
- Rating
- 5.0 / 5 · 5 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Filtered Hawaii LLC
Water treatment service contractor
- Address
- 558 Kamehameha Hwy
Honolulu, HI - Phone
- (808) 398-3283
- Website
- Not published
- Rating
- 5.0 / 5 · 2 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Enagic USA Honolulu Office
Water treatment service contractor
- Address
- 1585 Kapiolani Blvd
Honolulu, HI - Phone
- (808) 949-5300
- Website
- Not published
- Rating
- 3.7 / 5 · 23 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
All Aloha Plumbing and Drain Cleaning Oahu
Water treatment service contractor
- Address
- 150 Leoleo St
Honolulu, HI - Phone
- (808) 201-7526
- Website
- Not published
- Rating
- 4.8 / 5 · 1334 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Culligan Quench - O'ahu
Water treatment service contractor
- Address
Honolulu, HI- Phone
- (888) 822-1192
- Website
- Not published
- Rating
- 4.9 / 5 · 48 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Hawaii Water Damage Restoration
Water treatment service contractor
- Address
- 1050 Queen St
Honolulu, HI - Phone
- (808) 330-6212
- Website
- Not published
- Rating
- 4.7 / 5 · 54 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Menehune Water Company
Water treatment service contractor
- Address
- 1205 Halawa Valley St
Honolulu, HI - Phone
- (808) 487-7777
- Website
- Not published
- Rating
- 3.9 / 5 · 327 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Steve’s Plumbing & A/C Service
Water treatment service contractor
- Address
- 1265 Halawa Valley St
Honolulu, HI - Phone
- (808) 774-3038
- Website
- Not published
- Rating
- 4.8 / 5 · 5415 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Honouliuli Water Recycling Facility
Water treatment service contractor
- Address
- 1000 Geiger Rd
Honolulu, HI - Phone
- (808) 681-3138
- Website
- Not published
- Rating
- 3.5 / 5 · 4 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
First Quality Environmental
Water treatment service contractor
- Address
- 717 Kakaina St
Honolulu, HI - Phone
- (808) 259-0100
- Website
- Not published
- Rating
- 4.5 / 5 · 8 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kailua Regional Wastewater Treatment Plant
Water treatment service contractor
- Address
- 95 Kaneohe Bay Dr
Honolulu, HI - Phone
- (808) 768-5900
- Website
- Not published
- Rating
- 3.8 / 5 · 6 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
PureSpring Water Softeners & Filters
Water treatment service contractor
- Address
- 1321 Kalani St
Honolulu, HI - Phone
- (808) 435-2816
- Website
- Not published
- Rating
- 1.0 / 5 · 1 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Kawaiola Kangen Showroom
Water treatment service contractor
- Address
- 1568 Kupau St
Honolulu, HI - Phone
- (808) 393-7505
- Website
- Not published
- Rating
- 5.0 / 5 · 32 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Aloha Water Company
Water treatment service contractor
- Address
- 280 Hanua St
Honolulu, HI - Phone
- (808) 486-3300
- Website
- Not published
- Rating
- 4.0 / 5 · 42 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Chem Systems Inc.
Water treatment service contractor
- Address
- 1911 Democrat St
Honolulu, HI - Phone
- (808) 845-4446
- Website
- Not published
- Rating
- Not published
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Pure Water Technology Hawaii
Water treatment service contractor
- Address
- 223 Hanawai Cir
Honolulu, HI - Phone
- (808) 484-5855
- Website
- Not published
- Rating
- 3.0 / 5 · 4 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Verified
Roto-Rooter Plumbing & Water Cleanup
Water treatment service contractor
- Address
- 3049 Ualena St
Honolulu, HI - Phone
- (808) 846-1200
- Website
- Not published
- Rating
- 4.8 / 5 · 2263 reviews
- Place ID
- Not recorded
- Record
- Information last verified: 8 November 2026
Firms in Honolulu, HI 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 Honolulu: common questions
How many water firms are listed in Honolulu?
30 verified water firms are listed in Honolulu, HI. 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 Honolulu?
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 HI license water contractors?
Check the licence with the state board before work starts. The official lookup is the HI 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 Honolulu?
Ask whether the job needs a permit and who pulls it. The permit office is the Honolulu 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 Honolulu
The closest metros in this directory, by straight-line distance. Each link opens that city’s own cost, licence and permit page.
Guides for Honolulu 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 HI service areas ·Cost guides ·Methodology