Report on vital statistics and sanitary work for the year 1894 page 95

Paddington 1894

Report on vital statistics and sanitary work for the year 1894

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TABLE 23.—Comparative Analyses of Water Supply. (Compiled from Registrar-General's Annual Summary.)

			Thames (unfiltered water.)	From Mains of
			Thames (unfiltered water.)	West Middlesex Co.	Grand Junction Co.
In parts per 100,00 parts of water.	Temperature (degrees Centi-grade)	mean	10.9	10.9	12.3
		max.	18.7(8)	16.7(8)	19.1(8)
		min.	5.2(*)	6.5(*)	6.30
	Total Solids	mean	30.09	28.12	28.96
		max.	36.40(u)	34.50 (0	34.64(13)
		min.	26.24(')	23.30(8)	.25.64(8)
		mean	0.307 '	0.207	0.202
	Organic Carbon	max	0.733(ii)	0.415(11)	0.333(11)
		min.	0.179(13)	0.1260	0.1420
		mean	0.051	0.024	0.024
	Organic Nitrogen	max.	0.121(11)	0.0430	0.038(11)
		min.	0.028(12)	0.015(47)	0.017(8)
		mean	0.011	0.000	0.000
	Ammonia	max.	0.032(1)	0.000	0 000
	Ammonia	min.	0.005(* *)	0000	0.000
	Nitrogen as Nitrates , and Nitrites	mean	0.217	0.216	0.226
		max.	0.358(1")	0.345(»)	0.357(1')
		min.	01300	0.117(8)	0.1300
	Chlorino	mean	1.9	1.9	1.9
		max.	2.30	2.2(1)	2.20
		min.	1.7(4 11)	1.7(1 u is)	1.7(4 U)
	Degrees of Hardness(1"=1 pt. Ca C03 per 100,000)	mean	19.0	18.4	18.9
		max.	23.0(1')	227(H)	22.7(0
		min.	16.60	15.4(8)	171(7.9)

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Note.—The nmall figures shown ( ) indicate the month when the maximum
or minimum was observed.