Where Is It Permissible to Recite Brachot?

Saying Hashem's name in unclean places

1. Chazal learned from the pasuk "Vehaya Machanecha kadosh" that when Hashem's presence is with us, such as when one is involved with a dvar shebekedusha, such as kriyat shema, tefillah, or learning, one must make sure that one's area is clean, meaning, that there isn't any unclad area of a person or revealed feces where one is. The details of what is considered an unclad area of the body and what is considered feces is described below.
2. It is forbidden to even think words of Kedusha in an area where there is uncovered urine, human feces, or something that stinks.
3. If urine was absorbed into the ground or clothing, if there still is a moisture to the urine, one may not learn next to it unless it was diluted with a Reviyit of water.
4. If there is feces on one's body, one may not involve oneself in Divrei Kedusha even if it is covered.
5. One may speak hebrew in the bathroom and it is a pious practice not to.

Saying Hashem's name in vain

1. It is forbidden to say Hashem's name in vain. This inclues any name that are specific to Hashem, whether its in Hebrew or in any language.
2. It is permitted to say Hashem's name in a form of praise, or bracha according to the need, or as one is learning.