[Report 1954] / Medical Officer of Health, Warrington County Borough.

Warrington (England). County Borough Council.

Date:: 1954

Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: [Report 1954] / Medical Officer of Health, Warrington County Borough. Source: Wellcome Collection.

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REPRESENTATIVE EXAMINATION OF THE WARRINGTON DOMESTIC SUPPLY BACTERIOLOGICAL Houghton Green Winwick Newton Hollow Foxhill Forest Farm Number of organisms per ml. capable of growth on nutrient agar at 37 deg. C in 48 hours . 0 0 0 3 0 Number of organisms per ml. capable of growth on nutrient agar at 20/22 deg. C in 3 days ... ... 0 26 1 17 1 Probable number of coliform organisms per ml. .. 0 0 0 0 0 Probable number of faecal coli per 100 mis. 0 0 0 0 0 CHEMICAL Houghton Green Winwick Newton Hollow Foxhill Forest Farm Appearance . Odour . Nil clear Nil and colou Nil rless Nil Nil Reaction pH . 7-00 7-35 7 04 6-94 6-98 Parts Per Million— Total solids . 389 422 257 266 406 Nitrogen as free and saline ammonia . Nil •02 Nil Nil Nil Nitrogen as albumin¬ oid ammonia . Nil Nil Nil Nil Nil Nitrogen as nitrites ... Nil Nil Nil Nil Nil Nitrogen as nitrates ... 2-25 5 2-75 1-25 0-50 Chlor.des as Cl . 29 33 23 64 29 Oxygen absorbed from permanganate in 4 hrs. at 27 deg. C. 0-17 0-2 0-24 0-3 0-22 Total hardness . 284 280 137 118-5 269 Temporary hardness... 190 158 120 92 208 Permanent hardness 94 122 17 26-5 61 Alkalinity as CaC03 ... 190 158 120 97 208 Free Chlorine . Nil Nil Nil Nil Nil Poisonous Metals . Nil Nil Nil Nil Nil Manganese as Mn ... Nil Nil Nil Nil 0-5 SEWERAGE AND DRAINAGE The Borough Engineer (J. Y. Hughes, Esq., M.I.C.E.), indicates that work on the Sankey Valley Main Drainage Scheme is nearing completion; all sewering work in connection with the Orford Avenue scheme has been com¬ pleted and brought into operation and work is proceeding on the replacement of obsolete ejectors by a new pumping station. Tenders will shortly be invited for the construction of sewers and a storm water overflow to deal with the unsatisfactory system in the Thelwall Lane area.