Related by context. Frequent words. (Click for all words.) 62 toilets 56 faucets 54 cisterns 54 rainwater harvesting 53 potable water 53 indoor plumbing 51 bathrooms 51 Toilets 51 showerheads 49 water heaters 49 drinkable water 49 reverse osmosis 49 cistern 49 rainwater 49 water 49 potable 48 plumbing fixtures 48 washing machines 47 latrine 47 sprinklers 47 latrines 47 modern conveniences 46 geothermal heating 45 septic tanks 45 dishwashers 45 urinals 45 drip irrigation 44 drinking fountains 44 bathe 44 shower 44 toilet 44 sewage 44 dryers 44 outhouses 43 sprinkler systems 43 baths 43 conveniences 43 air conditioning 43 chlorination 43 faucet 43 sewage treatment 43 solar panels 42 wash dishes 42 air conditioners 42 Bathrooms 42 restrooms 42 disinfection 42 chlorinated 42 solar powered 42 compact fluorescent bulbs 42 stoves 42 irrigate 42 washers 42 fluorescent bulbs 42 septic systems 41 filtration 41 water heater 41 light bulbs 41 swimming pools 41 lavatories 41 fountains 41 thermostats 41 bathtubs 41 bathing 41 Solar panels 41 effluent 40 sprinkler system 40 sump pumps 40 washrooms 40 fridges 40 electricity 40 irrigation 40 hot tubs 40 boilers 40 water purification 40 piped 40 heaters 40 wastewater treatment 39 sewerage 39 sanitary 39 bottled water 39 dishwasher 39 loos 39 CFL bulbs 39 wood stoves 39 kitchens 39 skylights 39 geysers 39 outhouse 39 guzzlers 39 lightbulbs 39 install solar panels 39 wash 39 biogas 38 handwashing 38 wastewater 38 disinfect 38 septic tank 38 CFLs 38 metered 38 plumbing