You work hard to have the best, so let the professional team at H2O Marine Group take care of all your boat service, storage, and marine needs so you can relax and enjoy your time on the water. H2O Marine Group is a locally owned and operated marine management company focused on providing our customers with a one-stop shop for boat storage, maintenance, service, cleaning, and watercraft upgrades.
We are dedicated to serving the Lake Country community and exceeding our customers' expectations.

About H2O Marine

Locally owned and operated by long-term Lake Country residents and water enthusiasts, H2O Marine Group is Lake Country’s premier watercraft services and storage provider.  We have focused on building our team with service-oriented, professional individuals with a passion for providing outstanding service at an affordable price.

Quality Service 


Boat Storage 
Protect your boat from the elements and keep it in great condition year round

Onsite /Engine Service
H2O Marine offers a wide variety of onsite marine services for our customers

Boat Customization   Equipment and technology upgrades installed by our skilled staff mechanic

Cleaning & Detailing
Choose from our extensive list of cleaning services to meet your needs

Used Boats
Servicing hundreds of clients, H2O can often connect customers with boats for sale

Service & Storage

2023 Summer Storage

BOAT:  Indoor Storage With Access

  • $200/month or $550/season (May 1 – August 31)
  • Free in/out access during M-F business hours (9:00am – 4:00pm)
  • After hours pick-up or drop-off is an additional $25 fee per appointment
  • Must notify office 24 hours prior to schedule after hours access

BOAT:  Outdoor Storage With Access

  • $100/month or $350/season (May 1 – August 31)
  • Free in/out access during M-F business hours (9:00am – 4:00pm)
  • After hours pick-up or drop-off is an additional $25 fee per appointment
  • Must notify office 24 hours prior to schedule after hours access

AUTO/RV:  Indoor Storage With Access

  • $200/month or $550/season (May 1 – August 31)
  • Free in/out access during M-F business hours (9:00am – 4:00pm)
  • After hours pick-up or drop-off is an additional $25 fee per appointment
  • Must notify office 24 hours prior to schedule after hours access

AUTO/RV:  Outdoor Storage With Access

  • $100/month or $350/season (May 1 – August 31)
  • Free in/out access during M-F business hours (9:00am – 4:00pm)
  • After hours pick-up or drop-off is an additional $25 fee per appointment
  • Must notify office 24 hours prior to schedule after hours access
  • Sm/Med Trailer – Outside: $200
  • Large Trailer – Outside: $250
  • Trailers – Indoors:  $350
  • Single – $250 

  • Dual place trailer – $300 

  • Four place snowmobile trailer – $400

2022 Winter Storage

  • $1500 – $1750 per season
  • Does not include winterization.
  • $37/ft. per season
  • Storage Only:  $550
  • Shrink Wrap:   $17/ft
  • Shrink and Outdoor Storage: $17/ft plus $250 

PWC – WaveRunners and Jet Skis

  • Single PWC:  $250 
  • Double PWC:  $450
  • Sm/Med Trailer – Outside: $200
  • Large Trailer – Outside: $250
  • Trailers – Indoors:  $350

2023 Spring & Summer Services

  • Delivery to Lift/Dock :   $185
  • Meet at Launch for Delivery:   $150
  • Delivery to Driveway:   $150
  • Lift cover installation or removal:  $150
  • $105 (plus fuel charge of current price plus $1.75/ gallon, high octane, treated fuel)
  • Service Includes: Battery charge and check, Engine check/run up to temp, Water pump clear and operating, Drain plug(s) installed, Boat fuel up with treated gas

*Fuel up service is upon customer request, otherwise H2O will not fuel the tank prior to delivery

  • Engine service is performed onsite at the H2O Marine Group facility
  • Dockside service calls are available:  $150/service call
  • See Marine Cleaning/Detailing package details and prices listed in section below.

2022 Boat Winterization

  • 2 Stroke Winterization & Maintenance:   $225
  • 4 Stroke Winterization & Maintenance:   $300
  • Stern Drives (I/O) Winterization & Maintenance:   $350
  • Wake/Surf Boat (direct drive & ballasts/heaters)
    Winterization & Maintenance:   $500
  • PWC Winterization & Maintenance:   $300
  • Outboards:   $160
  • Inboards/Stern Drives:   $240
  • Wake Surf Boats with Ballasts/Heaters/Showers:   $350
  •  PWC:   $200 

Onsite Engine Service

Home or Dockside
Service Call: $150

  • Engine Tune-ups
  • Wave Runner Service
  • Complete mechanical services/repairs
  • Troubleshooting and maintenance
  • Winterizations/Summer Run-ups
  • Oil Changes
  • Impeller/Water Pump Service
  • Electrical System Service
  • Lower Unit Service
  • Propeller Service
  • Carburetor Service
  • Fuel system Service
  • Steering System Service
  • Welding Service

Boat Customization

Upgrade  your watercraft to fit your growing needs – whether it’s the latest in sonar equipment for your fishing boat or enhanced  speakers for your pontoon, H2O Marine Group can make it happen with our access to the leading electronics and equipment brands and our skilled staff mechanic.   Contact Jake to discuss your specific needs and available options.

  • Major fishing electronics at competitive prices
  • Installation of equipment and electronics
  • Trolling motors sales and installation
  • Custom wiring, mounting, and networking
  • Individualized installations and retrofits
  • Gauges, trim tabs, shallow water anchors, and spot lock
  • Lithium-ion battery and charger sales
  • Complete mechanical services, repairs, and maintenance

Authorized dealer for GARMIN & FUSION and represent other leading brands such as:

Boat Cleaning/Detailing

Keep Your Watercraft Sharp!

H2O Marine provides the finest watercraft detailing services to meet your individual needs.  Contact Jake with any questions or to schedule your services.

Pier & Lifts

Looking for a new or used pier or boat lift? H2O Marine can assist with all of your needs. We represent several quality pier and lift products suitable for every budget and lake property. If you are in need of a custom pier or boat lift, our service team can make it happen.

Used Boats

Due to our wide customer base, H2O Marine Group is often aware of local boats for sale. Feel free to contact us to learn about current market activity or any existing specific inventory.  We are also able to assist with pre-sale preparation of your boat and can facilitate the entire sales process through our brokerage program.


Current Inventory

H2O Marine Group Reviews

Mark Worgull, Worgull Builders
Hartland, WI
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Had your staff detail my vehicle which is my all- purpose, four years-old truck. They did an outstanding Kobe & my truck looks brand new! Thanks so much for the outstanding work!
Michelle Libesch
Hartland, WI
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Just want to give a shout out to Dave and crew at H2O Marine. Sure do appreciate all they do for us...from auto cleaning, boat storage, boat delivery, boat gas fills, and so much more. All done with the very best attention to detail and the kind of personal service we all crave these days. Give them a try if you haven’ will not be disappointed.
Colleen Haas
Pewaukee, WI
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Dave did an OUTSTANDING job on my Yukon XL! My vehicle was picked up and dropped off on the same day. I was provided another vehicle to use, which was greatly appreciated. Very friendly and professional service. I highly recommend H20 Marine!
Mike G.
Oconomowoc, WI
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We were going to sell our pontoon boat, but it looked moldy and ugly after being stored all winter. Decided to take it to H20 Marine to get cleaned up. They did such an amazing job that we decided to keep it another year. Beautiful work!
Mary Petra
Delafield, WI
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Fast response and service... Thanks, Dave!
Athena Big Mountain
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Absolutely LOVE the portering job the team did on my GMC Acadia! My mats look like new, my visors were deep cleaned and look fantastic! Attention to detail was what I wanted and it is exactly what I got! Thanks H20 Marine!
Cindy Stamm
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Five stars - Great job!
Brad Dettman
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Jake and Colin exceeded all my expectations! I dropped my boat off on a Wednesday and it was fully portered inside and out by day end Thursday. Totally unexpected! They even sent pics of the results prior to me picking the boat up. Great job all around. Thank you Jake and Colin!

Contact Us

General Manager: Jake Breeser

Call/Text: (414) 573-6991


Physical Address:

W360 N8515 Brown Street, Oconomowoc, WI 53066
Billing Address:

P.O. Box 238, Nashotah, WI 53058


Customer Service & Storage Agreement

Please read the agreement linked below and then sign and return the last page by email or mail.

Customer Service & Storage Agreement_ 2023-2024

H2O Marine Group, P.O.Box 238, Nashotah, WI 53058 

Invoice & Customer Payment Policy

Customer agrees that for all storage and/or other service rendered by H2O Marine and invoiced to customer,

that payment is due upon customer receipt of the invoice.

Late Penalty

All invoices are due upon receipt. 15% per annum interest will be charged on any unpaid balance after 30 days.


H2O Marine Fee/Rate Change Policy

H2O Marine Storage and Service reserves the right to change or update its fee schedule for storage and services

at any time without notice.  It is the sole responsibility of the customer to confirm with H2O Marine personnel the

anticipated standard or estimated service, sales, and/or storage fees prior to services being rendered.

Customer agrees to the H2O Invoice and Customer Payment Policy as provided herein.