London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Chigwell 1970
[Report of the Medical Officer of Health for Chigwell]
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(b) Results of Bacteriological Examination:
| Lee Bridge | Copper-mills | Chingford Mill | Waltham Abbey | |
|---|---|---|---|---|
| BEFORE TREATMENT - | ||||
| No. of samples | 2,709 | 723 | 247 | 247 |
| Agar plate count per ml:- | ||||
| 20-24 hours at 37°C | 76,7 | 50.0 | 0.1 | 0.0 |
| 3 days at 22°C | _ | - | 9 | 30. |
| Coliform count:- | ||||
| Per cent. samples negative in 100 ml . | 32.85 | 23.52 | 99.60 | 99.60 |
| Count per 100 ml. | 11.8 | 12.5 | - | - |
| Escherichia coli counts:- | ||||
| Per cent samples negative in 100 ml. | 54.60 | 40.94 | 99.60 | 100.0 |
| Count per 100 ml. | 2.9 | 5.2 | - | - |
| AFTER TREATMENT - | ||||
| No. of samples | 429 | 257 | 251 | 253 |
| Agar plate count per ml:- | ||||
| 20-24 hours at 37°C. | 28.9 | 12.5 | 0.1 | 0.2 |
| 3 days at 22°C | - | - | 4 | 38 |
| Coliform Count:- | ||||
| Per cent samples negative in 100 ml. | 99.53 | 98.44 | 100.0 | 100.0 |
| E. coli count:- | ||||
| Per cent samples negative in. 100ml | 99.77 | 100.0 | 100.0 | 100.0 |
2. DRAINAGE, SEWERAGE AND PUBLIC CLEANSING.
Mr. R.W. Edwards, C.Eng.M.I.C.E.,M.I.Mun.E.,A.M.B.I.M., Engineer
and Surveyor, has kindly supplied the following information -
(a) Drainage and Sewerage;
The soil drainage from the greater part of the District gravitates
to the main disposal works at Luxborough which was improved in 1938, was
extended after the war and recently has been further improved with the
addition of final effluent and storm water treatment lagoons. A scheme
for a further extension has now been approved by the Ministry consisting of
more filters and humus tanks and is expected to start soon.
A small part of the District drains to the Millers Lane Sewage
Disposal Works from whence the Council has now decided to lay a trunk
sewer to take the flow to the Luxborough Lane Works, thereby eliminating
the need for a second Disposal Works at Millers Lane.
-19- The