The Swimming Pool Operators and Owners Resources
- Information about installation, water testing and analysis, and chemical safety, for owners and operators in the United Kingdom.
- http://www.caromal.co.uk/

Swimming Pools and Swim Spas
- Guidance on swimming pool, spa, or hot tub design, construction, and maintenance.
- http://swimming.about.com/od/swimmingpoolsandspas/

Discount Pool and Spa Supplies Technical Reference
- Includes tools to determine water volume and pump size requirements, chemical balance guide, problems and solutions with heaters, filters and pumps.
- http://discount-pool-supplies.com/technical.php

How I Built My Own Swimming Pool
- In-depth information about the option of building your own pool, with pitfalls, advantages, and cost comparisons.
- http://www.howibuiltmyownpool.com/

The Finnish Sauna
- Mihael Cankar explains the history and ancient Finnish culture of steam bathing, the principles of sauna building, health considerations, as well as a few local terms and expressions.
- http://cankar.org/sauna/

Swimmingpool.com
- Discusses types and constructions of backyard pools, with an online design feature, dealer lookup, financing information, and photo gallery.
- http://www.swimmingpool.com/

Backyard Bay
- Maintenance, purchasing, and safety tips featuring Michael Miller from Backyard Bay Radio Show.
- http://www.backyardbay.com/

Pool Wizard
- Addresses questions about pool water chemistry and safety, and swimming pool problems. Includes step by step guides and pool calculators.
- http://www.havuz.org/

Hot Tub Guide.com
- Information on hot tubs and spas. Compare features and models from spa manufacturers.
- http://www.hottubguide.com/

Spababes
- Features a care guide, glossary, heater, and switch and relay advice.
- http://spababes.com/

Pool & Spa Living Magazine
- Information about buying and caring for swimming pools and hot tubs, and links to retailers in Canada and USA. Also sells subscription to its printed magazine.
- http://www.poolspaliving.com/

Poolsearch
- Articles and forums with advice. Directory of vendors.
- http://www.poolsearch.org/

Hot Tub Information Central
- Industry insider provides opinion and information about construction and purchase of hot tubs. Includes an active hot tub forum.
- http://www.angelfire.com/mi2/hottubs/

PoolSpa
- Information including a product directory and locator for pool service professionals, builders, spa dealers and retailers.
- http://www.poolspa.com/

PoolManual.com
- Series of articles about pool maintenance procedures, chemicals, and equipment.
- http://www.poolmanual.com/

PoolSolutions
- Offers pool tips and a directory of links to pool organizations and suppliers.
- http://www.poolsolutions.com/