Drinking water in 9721 (Austria)
For this postcode Wasserwerk der Marktgemeinde Weißenstein publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 5 underneath.
The values come from the Austrian drinking water database, to which water suppliers report voluntarily. In each case the highest value of the published range is given.
How to read the share of the parametric value
Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.
Kaltenbrunn
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Kaltenbrunn |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn |
| Sulphate | 6 mg/l | 250 mg/l | 2 % | Single value · Kaltenbrunn |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn |
| Pseudomonas aeruginosa | pro 250ml not determined | 0/100 ml | — | Single value · Kaltenbrunn |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Kaltenbrunn |
| Nitrite | 0,003 mg/l | 0.1 mg/l | 3 % | Single value · Kaltenbrunn |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,0005 mg/l | 0.5 mg/l | 0.1 % | Single value · Kaltenbrunn |
| Chloride | <1 mg/l below limit of quantification | 200 mg/l | < 0.5 % * | Single value · Kaltenbrunn |
| Clostridium perfringens (including spores) | pro250ml not determined | 0/100 ml | — | Single value · Kaltenbrunn |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Kaltenbrunn |
| Iron | 2 µg/l | 0.2 mg/l | 1 % | Single value · Kaltenbrunn |
| pH | 7,8 - | 6,5–9,5 | — | Single value · Kaltenbrunn |
| Sulphate | 6 mg/l | 250 mg/l | 2 % | Single value · Kaltenbrunn |
| Temperature | 9,3 Celsius | — | — | Single value · Kaltenbrunn |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 51 mg/l | 400 mg/l | 13 % | Single value · Kaltenbrunn |
| Carbonate hardness | 10,4 °dH | — | — | Single value · Kaltenbrunn |
| Magnesium | 19,3 mg/l | 150 mg/l | 13 % | Single value · Kaltenbrunn |
| Total hardness | 11,5 °dH | — | — | Single value · Kaltenbrunn |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Show 5 more supply zones in this postcode
Kaltenbrunn und Messner Quelle
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Kaltenbrunn und Messner Quelle |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
| Sulphate | 7,7 mg/l | 250 mg/l | 3 % | Single value · Kaltenbrunn und Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
| Pseudomonas aeruginosa | pro 250ml not determined | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Kaltenbrunn und Messner Quelle |
| Nitrite | 0,003 mg/l | 0.1 mg/l | 3 % | Single value · Kaltenbrunn und Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,0005 mg/l | 0.5 mg/l | 0.1 % | Single value · Kaltenbrunn und Messner Quelle |
| Chloride | <1 mg/l below limit of quantification | 200 mg/l | < 0.5 % * | Single value · Kaltenbrunn und Messner Quelle |
| Clostridium perfringens (including spores) | pro250ml not determined | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Kaltenbrunn und Messner Quelle |
| Iron | 2 µg/l | 0.2 mg/l | 1 % | Single value · Kaltenbrunn und Messner Quelle |
| pH | 7,8 - | 6,5–9,5 | — | Single value · Kaltenbrunn und Messner Quelle |
| Sulphate | 7,7 mg/l | 250 mg/l | 3 % | Single value · Kaltenbrunn und Messner Quelle |
| Temperature | 17,4 Celsius | — | — | Single value · Kaltenbrunn und Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 53 mg/l | 400 mg/l | 13 % | Single value · Kaltenbrunn und Messner Quelle |
| Carbonate hardness | 10,9 °dH | — | — | Single value · Kaltenbrunn und Messner Quelle |
| Magnesium | 21,2 mg/l | 150 mg/l | 14 % | Single value · Kaltenbrunn und Messner Quelle |
| Total hardness | 12,3 °dH | — | — | Single value · Kaltenbrunn und Messner Quelle |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Messner Quelle
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Messner Quelle |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Messner Quelle |
| Sulphate | 10,1 mg/l | 250 mg/l | 4 % | Single value · Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Messner Quelle |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Messner Quelle |
| Pseudomonas aeruginosa | 0 pro 250ml | 0/100 ml | — | Single value · Messner Quelle |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Messner Quelle |
| Nitrite | mg/l not determined | 0.1 mg/l | — | Single value · Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | mg/l not determined | 0.5 mg/l | — | Single value · Messner Quelle |
| Chloride | 1,70 mg/l | 200 mg/l | 0.8 % | Single value · Messner Quelle |
| Clostridium perfringens (including spores) | 0 pro250ml | 0/100 ml | — | Single value · Messner Quelle |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Messner Quelle |
| Iron | <0,5 µg/l below limit of quantification | 0.2 mg/l | < 0.3 % * | Single value · Messner Quelle |
| pH | 7,6 - | 6,5–9,5 | — | Single value · Messner Quelle |
| Sulphate | 10,1 mg/l | 250 mg/l | 4 % | Single value · Messner Quelle |
| Temperature | 8,5 Celsius | — | — | Single value · Messner Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 53 mg/l | 400 mg/l | 13 % | Single value · Messner Quelle |
| Carbonate hardness | 11,8 °dH | — | — | Single value · Messner Quelle |
| Magnesium | 23 mg/l | 150 mg/l | 15 % | Single value · Messner Quelle |
| Total hardness | 12,8 °dH | — | — | Single value · Messner Quelle |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Rosina Quelle
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Rosina Quelle |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Rosina Quelle |
| Sulphate | 13,6 mg/l | 250 mg/l | 5 % | Single value · Rosina Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Rosina Quelle |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Rosina Quelle |
| Pseudomonas aeruginosa | 0 pro 250ml | 0/100 ml | — | Single value · Rosina Quelle |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Rosina Quelle |
| Nitrite | 0,003 mg/l | 0.1 mg/l | 3 % | Single value · Rosina Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,0005 mg/l | 0.5 mg/l | 0.1 % | Single value · Rosina Quelle |
| Chloride | <1 mg/l below limit of quantification | 200 mg/l | < 0.5 % * | Single value · Rosina Quelle |
| Clostridium perfringens (including spores) | 0 pro250ml | 0/100 ml | — | Single value · Rosina Quelle |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Rosina Quelle |
| Iron | 2 µg/l | 0.2 mg/l | 1 % | Single value · Rosina Quelle |
| pH | 7,6 - | 6,5–9,5 | — | Single value · Rosina Quelle |
| Sulphate | 13,6 mg/l | 250 mg/l | 5 % | Single value · Rosina Quelle |
| Temperature | 10,6 Celsius | — | — | Single value · Rosina Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 25,9 mg/l | 400 mg/l | 6 % | Single value · Rosina Quelle |
| Carbonate hardness | 4,4 °dH | — | — | Single value · Rosina Quelle |
| Magnesium | 6,9 mg/l | 150 mg/l | 5 % | Single value · Rosina Quelle |
| Total hardness | 5,5 °dH | — | — | Single value · Rosina Quelle |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Sagschneider Mühlbacher Quelle
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Sagschneider Mühlbacher Quelle |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
| Sulphate | 9,2 mg/l | 250 mg/l | 4 % | Single value · Sagschneider Mühlbacher Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
| Pseudomonas aeruginosa | 0 pro 250ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Sagschneider Mühlbacher Quelle |
| Nitrite | 0,003 mg/l | 0.1 mg/l | 3 % | Single value · Sagschneider Mühlbacher Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,0005 mg/l | 0.5 mg/l | 0.1 % | Single value · Sagschneider Mühlbacher Quelle |
| Chloride | <1 mg/l below limit of quantification | 200 mg/l | < 0.5 % * | Single value · Sagschneider Mühlbacher Quelle |
| Clostridium perfringens (including spores) | 0 pro250ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Sagschneider Mühlbacher Quelle |
| Iron | 2 µg/l | 0.2 mg/l | 1 % | Single value · Sagschneider Mühlbacher Quelle |
| pH | 7,8 - | 6,5–9,5 | — | Single value · Sagschneider Mühlbacher Quelle |
| Sulphate | 9,2 mg/l | 250 mg/l | 4 % | Single value · Sagschneider Mühlbacher Quelle |
| Temperature | 10,3 Celsius | — | — | Single value · Sagschneider Mühlbacher Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 54 mg/l | 400 mg/l | 13 % | Single value · Sagschneider Mühlbacher Quelle |
| Carbonate hardness | 8,8 °dH | — | — | Single value · Sagschneider Mühlbacher Quelle |
| Magnesium | 10,3 mg/l | 150 mg/l | 7 % | Single value · Sagschneider Mühlbacher Quelle |
| Total hardness | 9,9 °dH | — | — | Single value · Sagschneider Mühlbacher Quelle |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Trattenjörg Quelle
Wasserwerk der Marktgemeinde WeißensteinAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Trattenjörg Quelle |
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
| Sulphate | 7,2 mg/l | 250 mg/l | 3 % | Single value · Trattenjörg Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 pro 250ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
| Intestinal enterococci | 0 pro 250ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
| Pseudomonas aeruginosa | 0 pro 250ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | <5 mg/l below limit of quantification | 50 mg/l | < 10 % * | Single value · Trattenjörg Quelle |
| Nitrite | 0,003 mg/l | 0.1 mg/l | 3 % | Single value · Trattenjörg Quelle |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Indicator parameters (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Ammonium | 0,0005 mg/l | 0.5 mg/l | 0.1 % | Single value · Trattenjörg Quelle |
| Chloride | 8,9 mg/l | 200 mg/l | 4 % | Single value · Trattenjörg Quelle |
| Clostridium perfringens (including spores) | 0 pro250ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
| Coliform bacteria | 0 pro 250 ml | 0/100 ml | — | Single value · Trattenjörg Quelle |
| Iron | 2 µg/l | 0.2 mg/l | 1 % | Single value · Trattenjörg Quelle |
| pH | 7,7 - | 6,5–9,5 | — | Single value · Trattenjörg Quelle |
| Sulphate | 7,2 mg/l | 250 mg/l | 3 % | Single value · Trattenjörg Quelle |
| Temperature | 9,2 Celsius | — | — | Single value · Trattenjörg Quelle |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 62 mg/l | 400 mg/l | 16 % | Single value · Trattenjörg Quelle |
| Carbonate hardness | 12 °dH | — | — | Single value · Trattenjörg Quelle |
| Magnesium | 22 mg/l | 150 mg/l | 15 % | Single value · Trattenjörg Quelle |
| Total hardness | 13,8 °dH | — | — | Single value · Trattenjörg Quelle |
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Frequent questions about postcode 9721
- How hard is the water in Postcode 9721?
- Wasserwerk der Marktgemeinde Weißenstein publishes a total hardness of 11.5 °dH for the supply zone Kaltenbrunn. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: Publication by the water supplier, retrieved on 11/08/2026.
- How much nitrate is in the drinking water in Postcode 9721?
- Wasserwerk der Marktgemeinde Weißenstein publishes a nitrate value of <5 mg/l for the supply zone Kaltenbrunn. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Publication by the water supplier, retrieved on 11/08/2026.
- Who supplies the drinking water in Postcode 9721?
- Wasserwerk der Marktgemeinde Weißenstein. The values shown here come from the supply zone Kaltenbrunn and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.
General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.