Public Water	Number of			Average
System Size	Public Water	Number of	Number of	Number of
(Number of	Systems	Persons	System	Persons per
persons served)		Served	Households‡	System
Ground Water Systems
25–100	16,140	934,000	311,000	59
101–500	15,950	3,906,000	1,302,000	245
501–1,000	4,980	3,651,000	1,217,000	733
1,001–3,300	5,814	10,774,000	3,591,000	1,853
3,301–10,000	2,374	13,769,000	4,590,000	5,800
10,001–25,000	914	14,482,000	4,827,000	15,845
25,001–50,000	361	12,882,000	4,294,000	35,684
50,001–75,000	99	5,954,000	1,985,000	60,141
75,001–100,000	45	3,871,000	1,290,000	86,022
100,001–500,000	81	15,382,000	5,128,000	189,901
500,001–1,000,000	7	5,079,000	1,693,000	725,571
More than 1,000,000	1	1,705,000	568,000	1,705,000
TOTAL	46,766	92,389,000	30,796,000	1,976
Surface Water Systems
25–100	1,160	69,000	23,000	59
101–500	2,261	657,000	219,000	291
501–1,000	1,227	925,000	308,000	754
1,001–3,300	2,504	4,924,000	1,641,000	1,966
3,301–10,000	1,711	10,262,000	3,421,000	5,998
10,001–25,000	939	15,117,000	5,039,000	16,099
25,001–50,000	446	15,945,000	5,315,000	35,751
50,001–75,000	161	9,900,000	3,300,000	61,491
75,001–100,000	76	6,552,000	2,184,000	86,211
100,001–500,000	186	38,437,000	12,812,000	206,651
500,001–1,000,000	27	18,395,000	6,132,000	681,296
More than 1,000,000	13	27,344,000	9,115,000	2,105,923
TOTAL	10,711	148,527,000	49,509,000	13,867
Total For Both Ground and Surface	57,477	240,916,000	80,305,000	—
Water Systems