[Report of the Medical Officer of Health for Greenwich Borough. page 56

Greenwich 1950

[Report of the Medical Officer of Health for Greenwich Borough.

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Table: UNDERGROUND WATER SUPPLIES.

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UNDERGROUND WATER SUPPLIES.

No.	Situation and Owners.	Depth of Well —Position.	Use.	Condition of Water.	Remarks.
1	British Oxygen Co. Ltd., Tunnel Avenue, S.E.10.	200 ft. deep 400 yds. from river. Water drawn at 190 ft.	Drink ing.	Bacteriologically a good water; chemically no significant change in composition since March' 42; affords no evidence of recent organic pollution and may be considered safe for drinking, but is very hard.	Well completely enclosed and protected from pollution. Samples to be taken quarterly.,
2	Metropolitan Water Board Pumping Station, Brookmill Road, S.E.8.	1500 yds. from river.	Do.	Water from combination of wells is tested daily.	This well is in circuit by adit to main pump supply.
3	Delta Metal Co. Ltd., Delta Works, Tunnel Avenue, S.E.10.	500 ft. deep 50 yds. from river. Water drawn	Industrial.	Chemically satisfactory. There is a trace of iron and considerable temporary hardness and salt ; no evidence of pollution.	Water used for cooling purposes; there are no drinking points. Well is completely enclosed and protected.
4	Christie's Wharf Ltd., Riverside, (Lombard Wall), Charlton, S.E.7.	at 490 ft. 250 ft. deep 300 yds. from river. Water drawn at 30 ft.	Do.	Chemically satisfactory. There is a trace of iron, the water is very hard, with a high degree of salt. Bacteriologically good; no evidence of recent pollution.	The water is used only for industrial purposes, with no drinking points. The well is in good condition and protected from surface water pollution.
5	United Glass Bottle Manufacturers Ltd., Anchor & Hope Lane, Charlton, S.E.7.	No. 2 Well— 300 ft. deep 200 yds. from river. Water drawn at 300 ft.	Do.	Extremely hard water, with a high salt content and traces of iron.	Used for industrial purposes only. Enclosed type, protected from pollution. There are no drinking points.
6	Do.	No 4 Well— 300 ft. deep 150 yds. from river. Water drawn at 300 ft.	Industrial.	Excessively bard water, very high salt content and heavy in iron. Bacteriologically good.	Used for industrial purposes only. Enclosed type, protected from pollution. There are no drinking points. Only used in emergency as water is too hard.
7	Do.	No. 5 Well— 300 ft. deep 250 yds. from river. Water drown at 300 ft.	Do.	Satisfactory, but hard and a little salt.	In regular use for industriaf purposes only. Enclosed type, protected from pollution.
8	S. P. Mumford & Co. Ltd., Greenwich Flour Mills, Deptford Bridge, S.E.10.	165 ft. deep. Very near to Deptford Creek. Water drawn at 36 ft.	Do.	Bacteriologically and chemically there is definite evidence of pollution. The water has a high bacteriological count with B. iColi in 1 cc.	This water is used for commercial purposes and is subject to chlorination.
9	St. Alfege's Hospital, Vanbrugh Hill, S.E.10.	No. 1 Well— 200 ft. deep 400 yds. from river, outside Laundry.	Do.	A hard water, with no evidence of pollution.	This well is used as a reserve supply for the Laundry only. Open type, protected from surface water.
10	St. Alfege's Hospital, Vanbrugh Hill, S.E.10.	No. 2 Well— 250 ft. deep 400 yds. from river, under Administrative wing of hospital.	Do.	A hard water, but showing no evidence of recent pollution.	The well is used as a reserve supply to the boiler feed. Protected from surface water.