§ Dr. Roger Thomasasked the Secretary of State for the Environment how often sewage sludge dumped from pipelines is sampled for analysis; and on how many occasions that samples have been taken they have exceeded the permitted levels for (a) list I substances and (b) list 11 substances.
§ Mrs. RumboldSampling frequencies of discharges from water authority sewage treatment works vary considerably according to the size of the works and the nature of the receiving matters. Public registers maintained by each water authority contain details for individual discharges of the consents to discharge and the samples taken.
§ Dr. Roger Thomasasked the Secretary of State for the Environment what information he has as to how much sewage is disposed of into the Mersey estuary from (a) pipelines and (b) ships.
130W
Vacant dwellings as a per cent. of all dwellings at 1 April 1985 (HIP 1) Local authority housing association Other public sector Private sector Number Percentage of stock Number Percentage of stock Number Percentage of stock Number Percentage of stock Region 1—North (excluding Cumbria) Hartlepool 228 1.99 24 1.73 — — 635 2.92 Langhaurgh 409 2.35 53 4.53 5 5.56 1,558 4.06 Middlesbrough 454 2.50 39 1.56 2 2.35 1,250 3.66 Stockton-on-Tees 574 3.01 41 2.80 11 3.29 1.464 3.19 Chester-le-Street 203 2.70 — — n.a. n.a. 291 2.30 Darlington 181 2.17 — — — — 1,775 6.01 Derwentside 259 2.06 4 0.72 49 7.74 1,202 5.57 Durham 146 1.27 — — 67 10.93 783 4.00 Easington 776 4.06 72 6.71 249 8.17 293 1.80 Sedgefield 558 3.64 7 0.62 8 3.85 477 2.51 Teeside 9 0.68 n.a. n.a. — — n.a. n.a. Wear Valley 88 1.07 11 0.97 — — 657 3.84 Alnwick 15 0.50 — — — — 210 2.49 Berwick-upon-Tweed 7 0.19 — — — — 42 0.51 Blyth Valley 158 1.57 10 0.69 46 8.95 536 2.97 Castle Morpeth 55 1.33 n.a. n.a. 213 20.11 242 1.79 Tynedale 4 0.09 n.a. n.a. n.a. n.a. n.a. n.a. Wansbeck 166 1.72 n.a. n.a. n.a. n.a n.a. n.a. Gateshead 1,133 3.13 88 2.82 n.a. n.a. 1,803 3.88 Newcastle upon Tyne 1,788 3.80 305 5.89 66 9.69 2,351 3.79 North Tyneside 1,076 3.71 89 3.09 37 9.27 2,002 4.00 South Tyneside 233 0.76 28 0.91 19 4.99 791 2.65 Sunderland 1,477 3.22 63 1.62 436 4.81 2,274 4.05 Region 2—Yorkshire and Humberside Beverley 10 0.18 — — — — 1,052 3.00 Boothferry 118 2.47 4 2.92 — — 1,300 6.79 Cleethorpes 41 1.14 — — — — n.a n.a. East Yorkshire 23 0.46 — — n.a. n.a. 1,400 5.09 Glanford 22 0.57 — — — — 1,093 5.00 Great Grimsby 94 1.13 5 1.05 5 5.26 850 3.31 Holderness 12 0.47 1 1.23 8 4.73 939 5.85 Kingston upon Hull 1,056 2.26 60 3.14 10 5.00 3,000 5.34 Scunthorpe 181 1.95 19 7.39 — — 471 3.09 Craven 40 1.83 — — — — 557 3.22 Hambleton 9 0.18 n.a. n.a. n.a. n.a. 953 4.05 Harrogate 108 1.74 n.a. n.a. n.a. n.a. n.a. n.a. Richmondshire 56 1.99 — — 402 17.02 802 6.44 Ryedale 3 0.08 6 0.70 36 7.83 1,319 4.63 Scarborough 103 1.37 4 1.04 52 11.18 1,498 4.06 Selby 35 0.62 — — — — — — York 111 1.04 10 1.49 — — 800 2.71 Barnsley 663 2.10 50 11.93 67 3.41 2,174 4.19 Doncaster 506 1.46 27 5.25 3 0.63 2,900 3.88 Rotherham 743 2.15 n.a. n.a. n.a. n.a. n.a. n.a.
§ Mrs. RumboldDischarges to the Mersey estuary from land-based outfalls are controlled by the North-West water authority. Information about the discharges is not held centrally, but is available from the public register maintained by that authority.
Discharges from ships are controlled by my right hon. Friend the Minister of Agriculture, Fisheries and Food. However, I understand that there are no authorisations for the disposal of sewage from ships into the Mersey estuary.