| Folie 1 Groundwater Quality Monitoring in Austria Karin Weber Federal Environment Agency - Austria

| Folie 2 Background Standardised groundwater quality monitoring for ~15 years Water Act and related Ordinances - Ordinance on Water Quality Monitoring - Ordinance on Groundwater Threshold Values

| Folie 3 Monitoring and Network Definitions : Austrian ordinance on water quality monitoring A GW-Quality Monitoring Network.... comprises all sampling sites which describe the overall groundwater region in a representative way and which are subject of regular sampling... WFD – Annex V GW monitoring network.... The groundwater monitoring network shall be designed so as to provide a coherent and comprehensive overview of GW chemical status...

| Folie 4 Key figures of the existing monitoring network GW-in Porous media ~ 1800 sites Karst-GW and GW in fractured rock ~ 250 sampling sites sampling as a rule 4x a year costs of analyses and data transfer are met by federal (2/3) and provincial (1/3) authorities costs of selection and establishing sampling sites are met totally by federal authorities costs per year: 2,2 to 2,9 Mio. Euro cyclic procedure – 6 years 1 year extended investigation programme 5 years programme according to the results of year 1 – but minimum programme is ensured

| Folie 5 Existing groundwater quality monitoring network

| Folie 6 Network adaptation Until 2006 adaptation of the existing GW-Quality Monitoring Network taking into account the new GW- bodies and WFD requirements.

| Folie 7 Delineation of GW-bodies Delineation Criteria Size, Homogeneity (geological / hydrogeological) Utilisation, economic importance, risk potential Single porous GW-bodies (>50 km², economic importance) Groups of GW-bodies Taking into account Existing national monitoring network Complete coverage of Austria by shallow GW-bodies due to importance of GW (~99 % of drinking water from GW) Assignment to 3 Aquifer Types Porous, Fractured, Karst

| Folie 8

| Folie 9 Aquifer Type Shallow GW ( 100 % of AT) Deep GW ( 12 % of AT) sum GW-bodies Porous media 64 Karstic media 1 Groups Predominantely porous media 187 Predominantely fractured media 29 Predominantely karstic media 151 sum Number of GW-bodies Size: GW-bodies (6 – 1,200 km²), Groups (8 - 11,000 km²)

| Folie 10 Network Adaptation Analysis for adaptation needs to new WFD GW- bodies mainly based on information of the Art. 5 Analyses e.g.: GW-flow direction, point and diffuse sources of pollution, soil characteristics, Overlying strata sampling site density and spatial distribution

| Folie 11 Example: information used for network adaptation Karte aus Ist-Zustandsanalyse einfügen- GW- Schichtenlinien, Einflussfaktoren.... was gut aussieht! Example: information used for network adaptation MEAN DISTANCE TO GW

| Folie 12 Example: information used for network adaptation DIFFUSE POLLUTION

| Folie 13 Example: information used for network adaptation CORINE LANDCOVER - SITE

| Folie 14 Groundwater Quality Monitoring in Austria Karin Weber Federal Environment Agency - Austria