Table 1. Indicators of POU product usage for all products.

		(1)	(2)	(3)	(4)	(5)	(6)	(7)
		Self-Report	Self-Report	Positive Chlorine Test	“No detectable” E. coli	E. coli <10 CFU/100 ml	Mean E. coli CFU/100 mL	Median E. coli CFU/100 mL
	Source of data	Survey	Water collection visit	Water Collection Visit	Water Collection Visit	Water Collection Visit	Water Collection Visit	Water Collection Visit
Aquatabs	Mean	13%	20%	10%	28%	42%	151	18
	S.E.	(1.4)	(1.8)	(1.2)	(1.9)	(2.2)	(13)
Water Guard	Mean	19%	24%	11%	31%	47%	139	13
	S.E.	(1.6)	(1.9)	(1.3)	(2.0)	(2.2)	(12)
PUR	Mean	7%	10%	3%	24%	41%	159	25
	S.E.	(1.0)	(1.3)	(0.7)	(1.9)	(2.1)	(13)
Filter	Mean	21%	29%	–	24%	43%	163	22
	S.E.	(1.7)	(2.0)		(1.9)	(2.2)	(14)
All Products	Mean	15%	21%	8%	27%	43%	154	20
	S.E.	(0.88)	(1.1)	(0.7)	(1.2)	(1.4)	(8)
	N	2339	2151	1737	2120	2120	2120	2120
Controls	Mean	–	0	0	17%	33%	182	43.5
	S.E.				(1.8)	(2.4)	(14)
	N		722	720	720	720	720	720

N is the number of household visits for the 600 treatment and 200 control households across four household visits (not including the baseline). Free chlorine was measured only among self-reported users of chemical products, but N in that column refers to number of households with chemical products at that survey round. Self-reports at surveys in column 1 defined as households that report “At least some water treated” and “last used product” is “today” or “yesterday.” Self-reports at water collection visits in column 2 defined as households that report they “Treat drinking water with [POU Product]” and “how long ago did you treat?” ≤24 hours.