Direktlänk till inlägg 17 februari 2011

Inga parasiter i faluvattnet

Av Ingrid Gustafsson - 17 februari 2011 11:14

Det handlar om parasiten Cryptosporidium. Vart tionde prov 2003-2008 från landets största ytvattentäkter innehöll parasiten. 
När parasitlarmet gick var det få som anade konsekvenserna. Snart fungerade en tredjedel av Östersundsborna som värddjur för Cryptosporidierna. De magsjuka bajsade miljardtals nya parasiter via avloppet rakt ut i Storsjön. Där hämtas också dricksvattnet. 
Vattenexperter strömmade till Östersund. För dem blev parasitutbrottet ett brutalt uppvaknande. 
– Jag ser det som en bra väckarklocka. Sverige har länge haft fokus på miljöeffekter, men till en del tappat bort de mikrobiologiska hälsoriskerna. Sårbarhetsaspekten är central, säger Thor Axel Stentröm, chefsmikrobiolog på Smittskyddsinstitutet (SMI) till TT. 
Prover på förekomst av parasiten Cryptosporidium har inte tagits regelbundet eftersom man inte känt till att den kunde ge problem. 
Efter utbrott i Österund har Falu Energi och Vatten tagit prover på vattnet från Rogsjön. 
- Vi har kontrollerat både vid intaget av råvatten i Rogsjön och efter vattenverket när det går ut i ledningarna, berättar Reimer Pettersson, affärsområdesansvarig för VA på Falu Energi och vatten. 
Proverna visat att det inte fanns Cryptosporidium i vattnet. 
Experterna är överens om att mikroorganismer som parasiter, virus och bakterier är det nya stora hotet mot vårt dricksvatten. 
Östersundsfallet visade att reningsmetoderna inte fungerade på parasiten. Svenskt Vatten, Livsmedelsverket och Smittskyddsinsitutet har tagit fram nya rekommendationer om vilka reningsmetoder som bör kombineras och att reningen ska sker i fler steg än tidigare. Det finns också nya regler för vattenskyddsområden. 
Dricksvatten är ett livsmedel och det innebär att reglerna för hantering är strängas. Vattnet kontrolleras regelbundet på flera ställen i dristributionskedjan.  
Faluns vatten är bra, men eftersom det är ytvatten tillsätts kemikalier. 
Faluborna kommer inte fortsätta att dricka sjövatten. En vattenledning dras från Lennheden i Borlänge. Från 2014 kommer Faluborna dricka grundvatten från Badelundaåsen. 
- Det blir en säkrare vattenförsörjning, säger Reimer Pettersson. Vattnet från Badelundaåsen behöver bara renas med sandfilter och det betyder att miljöbelastningen blir mindre. 
Fördelarna med grundvatten är låg och jämn temperatur, låg halt organiska ämnen, bättre mikrobiologisk kvalitet, enklare behandling i vattenverket. 

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Kommentar

Av Ingrid Gustafsson - 17 februari 2011 11:13

Vetenskapsakademien vill genom sitt lärarpris, Ingvar Lindqvistpriset, visa Sveriges lärare i matematik och naturvetenskap sin uppskattning och fästa samhällets uppmärksamhet på lärarnas viktiga roll för landets utveckling. Pristagarna är nominerade ...

Av Ingrid Gustafsson - 17 februari 2011 11:12

Det känns mycket positivt att vi har kommit ur stadiet att bara planera, säger kommunalrådet Jonny Gahnshag (S).EU har finansierat en förstudie om Resecentrum i Falun som nu är klar. Projektet handlar om att skapa ett resecentrum i Falun och skapa et...

Av Ingrid Gustafsson - 17 februari 2011 11:12

Vi har patienter från så gott som alla länets kommuner även om de flesta kommer från Falun. Det har gått över förväntan, säger Stina von Post, chef för Falu vårdcentral. När vårdcentralen startade i augusti i fjol listade sig 3 500 patienter här. Vår...

Av Ingrid Gustafsson - 17 februari 2011 11:10

21-åringen har ett långvarigt missbruk bakom sig. Han var föremål för sociala insatser redan som tonåring och dömdes redan 17 år gammal för flera stöldbrott. Han avböjde ungdomstjänst och har även misskött föreskrifter om vård efter flera domar till ...

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