Sustainable drinking water quality improvement by managed aquifer recharge in Tuusula region, Finland

Original Article


Managed aquifer recharge (MAR) is used for drinking water quality improvement in Finland. Finnish lakes are typically humic-containing natural organic matter (NOM). A typical MAR plant includes infiltration of lake or river water into an unconfined esker aquifer and withdrawal of water from wells, a few hundred meters downstream. The infiltrated water should have a residence time of at least around 1 month before withdrawal to provide time for processes needed to break down or remove NOM. Since 1979, Tuusula Region Water Utility (TRWU) has produced drinking water from lake water using managed aquifer recharge. TRWU operates two MAR plants which do not use precipitation and disinfection chemicals. Raw water is infiltrated without any pretreatment. TRWU has experience from basin, sprinkling, and well infiltration. NOM is reduced from 7.7 to 2.1–2.6 mgTOC/l before abstraction of the water from wells. Abstracted water is post-treated by limestone filtration and disinfected by ultra-violet radiation before pumping for distribution. A specific feature of the MAR process is the delayed influence of the raw water temperature on the abstracted water temperature. Design and operational experiences of the MAR plants are presented and discussed. Special emphasis is given for NOM reduction, temperature effects, comparison of infiltration techniques, and costs.


Drinking water Ground water Managed aquifer recharge Total organic carbon Water treatment 


  1. Dillon P, Fernandez EE, Tuinhof A (2012) Management of aquifer recharge and discharge processes and aquifer storage equilibrium. IAH contribution to GEF-FAO groundwater governance thematic paper 4, p 49Google Scholar
  2. Helmisaari HS, Derome J, Hatva T, Illmer K, Kitunen V, Lindroos A-J, Miettinen I, Pääkkönen J, Reijonen R (2005) Artificial recharge in Finland through basin and sprinkling infiltration: soil processes, retention time and water quality. In: Recharge systems for protecting and enhancing groundwater resources, proceedings of the 5th international symposium on management of aquifer recharge, ISMAR5, Berlin, Germany, 11–16 June, 2005. UNESCO IHP-VI, series on groundwater no. 13, pp 617–623Google Scholar
  3. Jensen KH (2001) Introduction to the concept of artificial recharge. In: Artificial recharge of groundwater. EC project ENV4-CT95-0071. Energy, environment and sustainable development. Final Report, pp 9–11Google Scholar
  4. Jokela P, Kallio E (2015) Sprinkling and well infiltration in managed aquifer recharge for drinking water quality improvement in Finland. J Hydrol Eng 20(3):B4014002-1–B4014002-7. doi: 10.1061/(ASCE)HE.1943-5584.0000975 CrossRefGoogle Scholar
  5. Jokela P, Vaahtera M, Vuori T, Meriluoto J (2007) The effect of iron and aluminium chemicals in humic water treatment by high-rate dissolved air flotation. In: Hahn HH, Hoffman E, Ødegaard H (eds) Chemical water and wastewater treatment IX, proceedings of the 12th Gothenburg symposium, Ljubljana, Slovenia, 20–23 May, 2007. IWA Publishing, London, pp 221–229Google Scholar
  6. Jokela P, Eskola T, Heinonen T, Tanttu U, Tyrväinen J, Artimo A (2017) Raw water quality and pretreatment in managed aquifer recharge for drinking water production in Finland. Water 9:138. doi: 10.3390/w9020138 CrossRefGoogle Scholar
  7. Jørgensen C, Peters J, Eschweiler B (2001) Removal of pathogens and monitoring of microbial changes during artificial recharge. In: Artificial recharge of groundwater. EC project ENV4-CT95-0071. Energy, environment and sustainable development. Final Report, pp 221–225Google Scholar
  8. Kolehmainen R (2008) Natural organic matter biodegradation and microbial community dynamics in artificial groundwater recharge. Doctoral Dissertation. Tampere University of Technology, Tampere, Finland, Publication 781Google Scholar
  9. Kolehmainen RE, Langwaldt JH, Puhakka JA (2007) Natural organic matter (NOM) removal and structural changes in the bacterial community during artificial groundwater recharge with humic lake water. Water Res 41:2715–2725CrossRefGoogle Scholar
  10. Kolehmainen RE, Kortelainen NM, Langwaldt JH, Puhakka JA (2009) Biodegradation of natural organic matter in long-term, continuous-flow experiments simulating artificial ground water recharge for drinking water production. J Environ Qual 38:44–52CrossRefGoogle Scholar
  11. Kortelainen NM, Karhu JA (2001) Stabiilien isotooppien hyödyntäminen tekopohjaveden muodostamisessa ja ranta-imeytymisessä: Tuusulan ja Forssan pohjavesialueet (Use of stable isotopes in managed aquifer recharge and bank filtration: Tuusula and Forssa aquifers). In: Salonen V-P, Korkka-Niemi K (eds) Kirjoituksia pohjavedestä. University of Turku, Finland, pp 95–106. (In Finnish)Google Scholar
  12. Kortelainen NM, Karhu JA (2006) Tracing the decomposition of dissolved organic carbon in artificial groundwater recharge using carbon isotope ratios. Appl Geochem 21:547–562CrossRefGoogle Scholar
  13. Lahti K, Rapala J, Kivimäki A-L, Kukkonen J, Niemelä M, Sivonen K (2001) Occurrence of microcystins in raw water sources and treated drinking water of Finnish waterworks. Water Sci Technol 43(12):225–228Google Scholar
  14. Mattsson T (2010) Export of organic matter, sulphate, and base cations from boreal headwater catchments downstream to the coast: impacts of land use and climate. Monographs of the Boreal Environment Research, no. 36, 2010. ISBN 978-952-11-3759-4Google Scholar
  15. Medema GJ, Stuyfzand PJ (2002) Removal of micro-organisms upon basin recharge, deep well injection and river bank filtration in the Netherlands. In: Dillon P (ed) Management of aquifer recharge for sustainability. Proceedings of the 4th international symposium on artificial recharge of groundwater, Adelaide, September, 2002, Lisse, Netherlands, ISBN 9058095274, pp 125–131Google Scholar
  16. Rantakari M (2010) The role of lakes in carbon cycling in boreal catchments. Monographs of the Boreal Environment Research, no. 35, 2010. ISBN 978-952-11-3744-0Google Scholar
  17. Standard Methods (1998) Standard methods for the examination of water and wastewater, 20th edn. APHA/AWWA/WEF, Washington DCGoogle Scholar
  18. Zacheus O (2011) Yhteenveto keskisuurten laitosten talousveden valvonnasta vuonna 2010 (Summary of water quality and control of middle-sized waterworks in 2010). National Institute for Health and Welfare. Accessed 7 Apr 2017. (In Finnish)
  19. Zacheus O (2015) Yhteenveto suurten laitosten talousveden valvonnasta vuonna 2015 (Summary of water quality and control of large-sized waterworks in 2015). National Institute for Health and Welfare. Accessed 7 Apr 2017. (In Finnish)

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Tuusula Region Water UtilityTuusulaFinland
  2. 2.Tavase Ltd.TampereFinland

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