It is reasonable to ask your tenant to dip out leaves from the skimmer and pool but use a pool service for everything else, including chemical maintenance and equipment.

What do you use to test the hot tub for safety and to adjust any chemical levels? 

The problem with our city is that the local chemical & energy industry has diminished over the last 10 years going off shore. 

That includes removing one layer down to the wood sheathing, installing ice/shield on eves and valleys, new drip edge and synthetic paper, ridge vent, 40 year dimensional asphalt shingle and new flashings on walls and chimneys and should include a 20 year workmanship warranty, that’s what I offer.

I'm considering buy some property near a new chemical plant construction site and turning it into an RV park to house the construction workers.

Keep in mind, if you keep it as a car wash biz, that revenue should cover costs of water, electricity, chemicals, etc as well as the building maintenance.

I have been working in chemical plants (project scheduler / "excel guy") for a few years but the uncertainty and constant relocating can be draining. 

Spas would also require a lot of attention for chemical adjustment and cleaning.  

(most notable are the largest banks)ADAC LaboratoriesAdvanced Telecommunication Corp.Aeroquip Vickers Inc.Alabama Power Co.Alfa Corp.Allegheny Technologies Inc.Allergan Inc.Allfirst Financial Inc.American Business Products, Inc.American Electric PowerAmerican Express Co.American Greetings Corp.American Management Systems Inc.American Seafoods Group LLCAmeritech Corp.Amerus Group Co.Anadarko Petroleum CorporationAppalachian Power Co.Arch ChemicalAristech Chemical Corp.AT&T CommunicationsAtlantic Richfield Co.Avery Dennison CorpAvon Products Inc.B.

Cooking with derailed train chemicals actually.Jokes aside, it's a great area.