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A comment on Boil Water Notice for City of Houston. Parent comment

Re:Boil Water Notice for City of Houston by c_o_n_v_e_x on Monday November 28, 2022 @10:10PM (#33783249)
Similar concept... clean rooms are positively pressured to keep germs, dirt, etc. from entering the room.

Isolation rooms are negatively pressured to keep bad stuff from leaving.

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