Drinking water in Ebermannstadt
3 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.
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.
Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach
Stadtwerke EbermannstadtAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 15/05/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Lead | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Escherichia coli (E. coli) | 0 1/100ml | 0/100 ml | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Sodium | 5,17 mg/l | 200 mg/l | 3 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
* 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 (33 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 1/100ml | 0/100 ml | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Intestinal enterococci | 0 1/100ml | 0/100 ml | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
Chemical parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Arsenic | < 0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Atrazine | < 0,02 µg/l below limit of quantification | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Cadmium | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Chromium | < 0,0002 mg/l below limit of quantification | 25 µg/l | < 0.8 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Copper | 0,0049 mg/l | 2 mg/l | 0.2 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Desethylatrazine | < 0,02 mg/l below limit of quantification | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Fluoride | 0,098 mg/l | 1.5 mg/l | 7 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Lead | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Nickel | < 0,0001 mg/l below limit of quantification | 20 µg/l | < 0.5 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Nitrate | 13,3 mg/l | 50 mg/l | 27 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Selenium | < 0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Tetrachloroethene | < 1,0 µg/l below limit of quantification | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Tetrachloroethene and Trichloroethene (sum) | 0 µg/l | 10 µg/l | 0 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Trichloroethene | < 1,0 µg/l below limit of quantification | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Trihalomethanes — Total | 0 µg/l | 50 µg/l | 0 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Uranium | 0,0001 mg/l | 10 µg/l | 1 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
* 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 |
|---|---|---|---|---|
| Chloride | 13,8 mg/l | 250 mg/l | 6 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Coliform bacteria | 0 1/100ml | 0/100 ml | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Colony count 22 °C | 0 1/ml | ohne anormale Veränderung | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Colony count 36 °C | 0 1/ml | ohne anormale Veränderung | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Conductivity (25 °C) | 539 µS/cm | 2,790 µS/cm | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| pH | 7,74 | 6,5–9,5 | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Sodium | 5,17 mg/l | 200 mg/l | 3 % | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
* 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 | 111 mg/l | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Hardness range (WRMG) | hart | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Magnesium | 13,2 mg/l | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
| Potassium | 0,8 mg/l | — | — | Single value · Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach |
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.
Postcodes in this zone: 91320
Show 2 more supply zones
ON Wölm (Wölm 4, Keller, Heizungsraum, WB, PNH)
ZVW WiesentgruppeAssigned 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 | 24 mg/l | 50 mg/l | 48 % | Single value |
| Lead | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Escherichia coli (E. coli) | 0 KbE/100ml | 0/100 ml | — | Single value |
| Sulphate | 18 mg/l | 250 mg/l | 7 % | Single value |
| Sodium | 4,54 mg/l | 200 mg/l | 2 % | Single value |
* 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 (46 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KbE/100ml | 0/100 ml | — | Single value |
Chemical parameters (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,5 µg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Benzene | <0,3 µg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0,003 µg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Bisphenol A | <0,4 µg/l below limit of quantification | 2.5 µg/l | < 16 % * | Single value |
| Boron | <0,1 mg/l below limit of quantification | 1 mg/l | < 10 % * | Single value |
| Bromate | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Cadmium | <0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| Copper | 0,035 mg/l | 2 mg/l | 2 % | Single value |
| Cyanide | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Fluoride | 0,063 mg/l | 1.5 mg/l | 4 % | Single value |
| Lead | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | 24 mg/l | 50 mg/l | 48 % | Single value |
| Nitrite | <0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Polycyclic aromatic hydrocarbons | <0,01 µg/l below limit of quantification | 0.1 µg/l | < 10 % * | Single value |
| Selenium | 0,005 mg/l | 10 µg/l | 50 % | Single value |
| Tetrachloroethene and Trichloroethene (sum) | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Trihalomethanes — Total | <1 µg/l below limit of quantification | 50 µg/l | < 2 % * | Single value |
| Uranium | <1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
* 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 (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Ammonium | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Calcite dissolution capacity | -31,6 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 17 mg/l | 250 mg/l | 7 % | Single value |
| Clostridium perfringens (including spores) | 0 KbE/100ml | 0/100 ml | — | Single value |
| Coliform bacteria | 0 KbE/100ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 1 KbE/ml | ohne anormale Veränderung | — | Single value |
| Colour | <0,05 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Iron | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Manganese | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Odour | 100 | für den Verbraucher annehmbar | — | Single value |
| Sodium | 4,54 mg/l | 200 mg/l | 2 % | Single value |
| Sulphate | 18 mg/l | 250 mg/l | 7 % | Single value |
| Taste | 100 | für den Verbraucher annehmbar | — | Single value |
| Temperature | 18,1 °C | — | — | Single value |
| Total organic carbon (TOC) | 0,55 mg/l | ohne anormale Veränderung | — | Single value |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 6,52 mmol/l | — | — | Single value |
| Calcium | 79,1 mg/l | — | — | Single value |
| Hardness range (WRMG) | 21,2 °dH | — | — | Single value |
| Magnesium | 43,9 mg/l | — | — | Single value |
| Potassium | 1,10 mg/l | — | — | Single value |
| Saturation index | 0,370 | — | — | Single value |
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.
Postcodes in this zone: 91320
Stadtteil Eschlipp
Stadtwerke EbermannstadtAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 15/05/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 11,5 mg/l | 50 mg/l | 23 % | Single value · Stadtteil Eschlipp |
| Lead | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value · Stadtteil Eschlipp |
| Escherichia coli (E. coli) | 0 1/100ml | 0/100 ml | — | Single value · Stadtteil Eschlipp |
| Sodium | 4,1 mg/l | 200 mg/l | 2 % | Single value · Stadtteil Eschlipp |
* 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 (33 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 1/100ml | 0/100 ml | — | Single value · Stadtteil Eschlipp |
| Intestinal enterococci | 0 1/100ml | 0/100 ml | — | Single value · Stadtteil Eschlipp |
Chemical parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value · Stadtteil Eschlipp |
| Arsenic | <0,0001 mg/l below limit of quantification | 10 µg/l | < 1 % * | Single value · Stadtteil Eschlipp |
| Atrazine | < 0,02 µg/l below limit of quantification | — | — | Single value · Stadtteil Eschlipp |
| Cadmium | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value · Stadtteil Eschlipp |
| Chromium | <0,0002 mg/l below limit of quantification | 25 µg/l | < 0.8 % * | Single value · Stadtteil Eschlipp |
| Copper | 0,0091 mg/l | 2 mg/l | 0.5 % | Single value · Stadtteil Eschlipp |
| Desethylatrazine | < 0,02 µg/l below limit of quantification | — | — | Single value · Stadtteil Eschlipp |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Single value · Stadtteil Eschlipp |
| Lead | < 0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value · Stadtteil Eschlipp |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Stadtteil Eschlipp |
| Nickel | < 0,0001 mg/l below limit of quantification | 20 µg/l | < 0.5 % * | Single value · Stadtteil Eschlipp |
| Nitrate | 11,5 mg/l | 50 mg/l | 23 % | Single value · Stadtteil Eschlipp |
| Nitrite | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value · Stadtteil Eschlipp |
| Selenium | 0,0003 mg/l | 10 µg/l | 3 % | Single value · Stadtteil Eschlipp |
| Tetrachloroethene | < 1,0 µg/l below limit of quantification | — | — | Single value · Stadtteil Eschlipp |
| Tetrachloroethene and Trichloroethene (sum) | 0 µg/l | 10 µg/l | 0 % | Single value · Stadtteil Eschlipp |
| Trichloroethene | < 1,0 µg/l below limit of quantification | — | — | Single value · Stadtteil Eschlipp |
| Trihalomethanes — Total | 0 µg/l | 50 µg/l | 0 % | Single value · Stadtteil Eschlipp |
| Uranium | 0,0001 mg/l | 10 µg/l | 1 % | Single value · Stadtteil Eschlipp |
* 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 |
|---|---|---|---|---|
| Chloride | 9,29 mg/l | 250 mg/l | 4 % | Single value · Stadtteil Eschlipp |
| Coliform bacteria | 0 1/100ml | 0/100 ml | — | Single value · Stadtteil Eschlipp |
| Colony count 22 °C | 0 1/ml | ohne anormale Veränderung | — | Single value · Stadtteil Eschlipp |
| Colony count 36 °C | 0 1/ml | ohne anormale Veränderung | — | Single value · Stadtteil Eschlipp |
| Conductivity (25 °C) | 536 µS/cm | 2,790 µS/cm | — | Single value · Stadtteil Eschlipp |
| Iron | <0,010 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value · Stadtteil Eschlipp |
| pH | 7,63 | 6,5–9,5 | — | Single value · Stadtteil Eschlipp |
| Sodium | 4,1 mg/l | 200 mg/l | 2 % | Single value · Stadtteil Eschlipp |
* 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 | 101 mg/l | — | — | Single value · Stadtteil Eschlipp |
| Hardness range (WRMG) | hart | — | — | Single value · Stadtteil Eschlipp |
| Magnesium | 7,37 mg/l | — | — | Single value · Stadtteil Eschlipp |
| Potassium | 1,1 mg/l | — | — | Single value · Stadtteil Eschlipp |
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.
Postcodes in this zone: 91320
Frequently asked questions about drinking water in Ebermannstadt
- How hard is the water in Ebermannstadt?
- Stadtwerke Ebermannstadt publishes the hardness range 16,7 for the supply zone Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach. The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 15.05.2024, retrieved on 13/07/2026.
- How much nitrate is in the drinking water in Ebermannstadt?
- Stadtwerke Ebermannstadt publishes a nitrate value of 13,3 mg/l for the supply zone Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach. The statutory parametric value is 50 mg/l; the measured value represents 27 % of the parametric value. Basis: 15.05.2024, retrieved on 13/07/2026.
- Who supplies the drinking water in Ebermannstadt?
- Stadtwerke Ebermannstadt. The values shown here come from the supply zone Ebermannstadt mit den Stadtteilen Gasseldorf, Neuses-Poxstall, Niedermirsberg und Rüssenbach 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.