Table 1.

Demographics of U.S. household water studies for the MAC

Study no.	Type of disease	No. of patients	No. of households	No. of culture sites	Culture source		Location(s)	Reference(s)
					Water	Biofilm
1	Sinus	8	8	80	+	+	New York City, San Francisco, CA, and Florida	6
2	Pulmonary	26	26	224	−	+	Philadelphia, PA	L. Lande, unpublished data; 17
3	Pulmonary	28	30	379	+	+	14 states	1
4	Pulmonary	10	15	66	−	+	Texas and Louisiana	R. J. Wallace, Jr., unpublished data
5	Pulmonary	1	1	3	+	+	New York City	2
Total		73	80	752