[Report 1939] / Medical Officer of Health, Chelmsford Borough.

  • Chelmsford (England). Borough Council
Date:
1939
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1939] / Medical Officer of Health, Chelmsford Borough. Source: Wellcome Collection.

    17/36
    WATER ANALYSES. (Drs. Beale and Suckling). 14a pjtc of Analysis San,,,If from J3th November, 1939. GaUeywood Pumping Station Borehole. 15th November, 1939. Kings Road Main 13th November, 1939. Mildmay Road Borehole. 15th November, 1939. Boarded Barns Pumping Station. 1.5th November, 1939. Brockley Road Main. 15th November, 1939. Admirals Park Tower (Borehole and Spring). 20th November, 1939. Sandford Mill Rising Main. CHEMICAL RESULTS IN PARTS PER 100,000. Clear and bright. Clear and bright. Clear and bright. Clear and bright. Clear and bright. Bright—few mineral particles Bright—slight deposit of floe- Turbidity nil. culent grey mineral debris. ! Turbidity 5 p.p.m. Silica Scale. Normal. Normal. Normal. Normal. Normal. Normal. Normal. None. None. None. None. None. None. None. Reaction jiH. Faint Alkaline 8.5 Neutral 7.3 Neutral 7.3 Neutral 7.0 Neutral 7.3 Neutral 7.2 Faintly Alkaline 8.5 Krff Carbonic .Acid .. Nil. 0.88 3.1 4.4 0.88 3.2 Trace. Elcftrir Conductivity at 20°C. 1530 550 1210 700 530 965 380 [Total Solids, 180°C. .. 102.0 37.0 81.0 47.0 35.0 64.0 25.0 IChlormc in Chlorides 30.4 5.1 18.0 2.8 5.3 12.4 2.8 1 Nitrogen in Nitrates Nil. 0.32 0.72 1.00 0.26 0.32 0.18 1 Nitrites Absent. .Slight trace. Trace. Absent. Trace. Slight trace. Trace. iHni'ilncss: Total 2.5 17.0 21.0 36.0 15.0 21.0 12.5 1 i’ermanent 0.0 10.0 0.0 12.0 9.5 0.0 11.5 lAlkalinil\MUs (laC03 33.0 9.0 30.0 26.0 7.5 28.0 3.0 [lletals Iron—0.020 Iron—0.005. Other Metals Iron—0.005 Iron—0.003 Iron—0,005. Other Metals Iron—0.007 Iron—0.005. Other Metals Absent. Absent. Absent, ■Five Araniomn 0.0920 0.0016 0.0176 0.0000 0.0032 0.0168 0.0072 lAlbnininoid Ammonia 0.0008 0.0100 0.0020 0.0008 0.0128 0.0008 0.0152 10.xygcn absorbed in 4 hours at 1 Dtl'-F. .. 0.040 0.105 0.030 0.005 0.125 0.020 0.165 1 Five ('hlorine Absent. 0.1 p.p.ra. 0.08 p.p.m. 0.10 BACTERIOLOGICAL RESULTS. 1 No. of Bacteria per c.e.— 1 Oil Agar in 3 days at 20®C. 3 5 2 3 3 6 12 1 bn Agar in 2 days at 37®C. 2 4 1 1 1 3 9 1 bn Agar in 24 hours at 37®0. 2 0 1 1 1 3 9 1 The Bacillus Coli Absent in 100 c.c. Absent in 100 c.c. Absent in 100 c.c. Absent in 100 c.c. Absent hi 100 c.c. Absent in 100 c.c. Absent in 100 c.c. |iB«cillii, Weiciiii Absent in 100 d.c. Present in 100 c.c. Absent in 100 c.c. Absent in 100 c.c. Present in 100 c.c. Absent in 100 c.c. Absent in 100 c.c. 1 (B- Kiiteriditis Sjiorogenes) Absent in 10 c.c. Absent in 10 c.c. ■ Report: This is a satisfactory sample. This sample is clear and This sample is clear and This sample is clear and Tliis sample is clear and This sample is reasonably j This sample is not quite clear The water is clear and bright bright, and of normal colour. bright, of normal colour, neu- bright and of normal colour. bright, of normal colour, neu- clear and bright and of normal I and bright, containing a trace in appearance, faintly alkaline neutral in reaction, and free tral in reaction, and free from The w'ater is very hard in tral in reaction, and free from colour. The water is hard in ' of mineral ilebris in suspen- in reaction, soft in character. from metals, with the excep- metals, with the exception of character, although not to metals, with the exception of character, although not un- ’ sion, but it has no discolour- and has a high, but not ex- tion of a negligible'trace of a negligible trace of iron. such a degree as to be detri- a negligible trace of iron. duly so, contains no excess of ! ation. The water is faintly cessive, content of salinity. It iron. The water is not unduly The water is hard in character. mental to health, contains no The water is not unduly hard salinity, no metals, with the alkaline in reaction, has mod- is of very satisfactory organic hard in character, contains no although not unduly so, con- excess of saline or mineral in character, contains no exception of a negligible trace , erate hardness, contains no and bacterial purity and excess saline or mineral tarns no excess of salinity, and matter in solution, no metals ; excess of saline or mineral of iron and of a high standard , excess of saline or mineral shows no evidence of pollu- matte'r in solution, and is of is of satisfactory organic with the exception .of a negli- i matter in solution, and is of of organic and bacterial pur- matter in solution and no tion. In these respects the satisfactory organic and bac- quaUty, and a high degree of gible trace of iron, and is of a satisfactory organic and bac- ity. These results are consis- : metals, with the exception of water is considered wholesome terial ])urity. These results bacterial purity. These results high standard of organic and terial purity. These results tent with a wholesome water, | a negligible trace of iron. It ui character, and suitable for are satisfactory and consist- are consistent with a whole- bacterial purity. These results are satisfactory and consistent suitable for drinking and is of satisfactory organic and th(“ purposes of juiblic sup])ly. ent with wholesome water, some water, suitable for the are satisfactory and consistent with a wholesome water, suit- domestic purposes. bacterial jjurity and is con- suitable for drinking and purposes of ])ublic supply. with a wholesome water, suit- able for drinking and domestic sidered whole.some in charac- domestic ])urposes. able for di'inking and domes- purposes. | ter, and suitable for drinking tic purposes. and domestic purposes.