Table 2. Selected characteristics of participating households (n = 438).

Characteristic	N*	%	Characteristic	N	%
Size of household			Main Sources of drinking water †
2 or less	34	0.08	Metro Water
3	62	0.14	Piped	101	0.23
4	175	0.40	Public Tap	170	0.39
5	99	0.23	Ground Water
6	34	0.08	Hand pump in residence	51	0.12
6 or more	36	0.08	Bore Well	11	0.03
Years living in location			Pumped into house	16	0.04
< = 1	64	0.15	Public hand pump	18	0.04
1–5	107	0.24	Buy mineral Water	71	0.16
5–10	65	0.15	Tanker Truck	35	0.08
10–20	78	0.18	From individual	19	0.04
>20	125	0.28	Water can	25	0.06
Number of rooms in house			Other	6	0.01
1	242	0.55	Toilet
2	127	0.29	Flush Toilet
3	52	0.12	Own	54	0.12
4 or more	19	0.04	Shared	8	0.02
Type of dwelling			Pit toilet/latrine
Single House	160	0.36	Own	268	0.61
Several separate structures	175	0.40	Shared	80	0.18
Flat/apartment	94	0.21	Public	23	0.05
Other	11	0.03	No facility	4	0.01
Monthly household income (Indian Rupees)			Rubbish
0–2999	26	0.06	Truck	289	0.66
3000–4999	94	0.21	Self-dumping	117	0.27
5000–6999	98	0.22	Rubbish pit	28	0.06
7000–999	76	0.17	Private collector	5	0.01
10000–19999	73	0.17
>20000	70	0.16
Education (of head of household)
Professional or honors	8	0.02
Graduate/Post Graduate	82	0.19
Intermediate	14	0.03
Vocational/Trade School	28	0.06
High school	157	0.36
Middle School (8th)	74	0.17
Primary School (5th)	39	0.09
Not formally educated	8	0.02
Illiterate	30	0.07

*Includes data from two additional households that answered questionnaire but did not provide blood samples

^†Participants were allowed to list up to 2 sources