Agua no es masculino, es femenino. Se usa el artículo masculino para evitar cacofonía con la primera sílaba, pero se dice "el agua está sucia", no el agua está sucio. Y se habla de agua clara, caliente, etc. Water in Spanish IS NOT a male word. It's a female word which use the masculine article to avoid cacophony!

"Too" in that context would mean "muy" or "demasiado" (way too much). Actually you would say "el agua esta muy caliente" ("water" in spanish is a male word so you use "el" before it, not "la" and "hace calor" is used when speaking about for example the weather, it would be like "It´s hot today" since "el agua hace calor" just doesn´t make since, though, in english you would use the same word "hot". In "los zapatos son estrechos" (the shoes are tight) you should put "los zapatos son muy estrechos" (the shoes are too tight). Or you could even put "los zapatos son demasiado estrechos" (the shoes are way too tight). By the way you can also use "ajustados" (for plural), "ajustado" (for singular) instead of "estrechos" althought it´s allright to use "estrechos" too. Hope that helps.

here "too" means demasiado, that's to say "in excess". Before an adjective "too" means always this. Be careful because foreigners and spanish learning english make mistakes with the use of TOO, ALSO, AS WELL, in english, or TAMBIEN; DEMASIADO, MUCHO/MUY in spanish. i do them too/as well. Pay attention if at the position of the word in the phrase and if you're want to express quality in excess or coincidence in circumstances. not too complicate, just a bit of training.