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Drinking water supply on Langeoog - situation and problems

Drinking water supply on Langeoog - situation and problems. Holger Hinnah OOWV - The water board of Oldenburg and East Frisia. founded in 1948 as a water and soil board. institution with legal standing. since 1999: new department sewage disposal. The OOWV. OOWV- Area. general company.

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Drinking water supply on Langeoog - situation and problems

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  1. Drinking water supply on Langeoog - situation and problems Holger Hinnah OOWV - The water board of Oldenburg and East Frisia

  2. founded in 1948 as a water and soil board institution with legal standing since 1999: new department sewage disposal The OOWV

  3. OOWV- Area

  4. general company year of foundation 1948 sewage disposal since 1999 7.850 km 2 area ca. 1 Mill. clients employees 651 thereof trainee 30 total assets (drinking water and sewage) ca. 500 Mill. EUR The OOWV in figures Stand:1/2004

  5. drinking water supply sewage disposal groundwater protection assumption of further tasks possible Fields of activity

  6. Department of drinking water waterworks & water storage tanks waterworks water storage tank

  7. in figures members 9 rural districts2 cities1 municipality 251.000 m / day 3 capacity of the 15 waterworks 69 Mill. m / year 3 drinking water release 13.000 km length of pipe system accesses to households 320.000 clients consumption per head 880.000 121 l / day Department of drinking water Stand: 4/2003

  8. purchase of land &afforestation groundwater protection cooperation with farmers purchase of land & afforestation Cooperation with farmers organic farming Organic farming publicity Groundwater protection Ankauf & Aufforstung Ökologischer Landbau Kooperation mit Landwirten

  9. Tree and nature teaching trail in Holdorf Organic farm „Bakenhus“ in Großenkneten Service centre in the T.A.Z. in Oldenburg Freshwater teaching trail in Nethen Kaskade-information centre in Diekmannshausen Old waterworks Langeoog Information centres

  10. Island Langeoog

  11. rainfall evaporation North Sea wadden sea freshwater lens well clay sand + freshwater clay sand + salt water clay Freshwater lens Ankauf & Aufforstung Ökologischer Landbau Kooperation mit Landwirten

  12. Water protection area

  13. Main problems • unsecure old deposition of harmful substances

  14. Endangering old domestic garbage dump well with hydrocarbons

  15. Main problems • unsecure old deposition of harmful substances • stability of freshwater lens

  16. Chloride concentration

  17. Main problems • unsecure old deposition of harmful substances • stability of freshwater lens • danger of flooding

  18. catchment area Endangered catchment area

  19. Endangered catchment area

  20. Questions? Thank you for your attention!

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