Drinking water in 99310
For this postcode Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV) 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.
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.
arnstadt gesamt
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 14,3 mg/l | 50 mg/l | 29 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Sulphate | 30,3 mg/l | 250 mg/l | 12 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Sodium | 12,5 mg/l | 200 mg/l | 6 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 14,3 mg/l | 50 mg/l | 29 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
Indicator parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | -1 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Chloride | 16,8 mg/l | 250 mg/l | 7 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| pH | 7,7 pH-Einheiten | 6,5–9,5 | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Sodium | 12,5 mg/l | 200 mg/l | 6 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Sulphate | 30,3 mg/l | 250 mg/l | 12 % | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Temperature | 9,6 °C | — | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Total organic carbon (TOC) | 1,0 mg/l | ohne anormale Veränderung | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Turbidity | 0,16 NTU | 1 NTU | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 8,6 °dH | — | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Magnesium | 9,6 mg/l | — | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Saturation index | 7,65 | — | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
| Total hardness | 10,6 °dH | — | — | Mean · VG Arnstadt Stadt / HB Alteburg (ab 12.01.2021) |
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
VG Arnstadt Nord Ichtershausen (FW)
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 3,2 mg/l | 50 mg/l | 6 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Sulphate | 18,0 mg/l | 250 mg/l | 7 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Sodium | 12,8 mg/l | 200 mg/l | 6 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3,2 mg/l | 50 mg/l | 6 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
Indicator parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 0 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Chloride | 13,5 mg/l | 250 mg/l | 5 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| pH | 8,3 pH-Einheiten | 6,5–9,5 | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Sodium | 12,8 mg/l | 200 mg/l | 6 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Sulphate | 18,0 mg/l | 250 mg/l | 7 % | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Temperature | 9,4 °C | — | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Total organic carbon (TOC) | 1,1 mg/l | ohne anormale Veränderung | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Turbidity | 0,17 NTU | 1 NTU | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
Further parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 4,1 °dH | — | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Magnesium | 4,5 mg/l | — | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Saturation index | 8,32 | — | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
| Total hardness | 4,5 °dH | — | — | Mean · VG Arnstadt Nord - Ichtershausen (FW) |
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.
Fernwasserbezug TWA Luisenthal 3
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 4,6 mg/l | 50 mg/l | 9 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Sulphate | 9,9 mg/l | 250 mg/l | 4 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Sodium | 14,5 mg/l | 200 mg/l | 7 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
Show all recorded parameters (15 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 4,6 mg/l | 50 mg/l | 9 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 0,83 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Chloride | 13,5 mg/l | 250 mg/l | 5 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Sodium | 14,5 mg/l | 200 mg/l | 7 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Sulphate | 9,9 mg/l | 250 mg/l | 4 % | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Temperature | 4,5 °C | — | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Turbidity | 0,06 FNU | 1 NTU | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 3,3 °dH (0,6 mmol/l) | — | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Magnesium | 1,13 mg/l | — | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
| Total hardness | 3,2 °dH (0,6 mmol/l) | — | — | Mean · Fernwasserbezug TWA Luisenthal 3 |
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.
Fernwasserbezug WW Plaue 4
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 1,0 mg/l | 50 mg/l | 2 % | Mean · Fernwasserbezug WW Plaue 4 |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug WW Plaue 4 |
| Sulphate | 74,0 mg/l | 250 mg/l | 30 % | Mean · Fernwasserbezug WW Plaue 4 |
| Sodium | 62,1 mg/l | 200 mg/l | 31 % | Mean · Fernwasserbezug WW Plaue 4 |
Show all recorded parameters (15 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug WW Plaue 4 |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,0 mg/l | 50 mg/l | 2 % | Mean · Fernwasserbezug WW Plaue 4 |
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 3 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · Fernwasserbezug WW Plaue 4 |
| Chloride | 69,0 mg/l | 250 mg/l | 28 % | Mean · Fernwasserbezug WW Plaue 4 |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · Fernwasserbezug WW Plaue 4 |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Fernwasserbezug WW Plaue 4 |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Fernwasserbezug WW Plaue 4 |
| Sodium | 62,1 mg/l | 200 mg/l | 31 % | Mean · Fernwasserbezug WW Plaue 4 |
| Sulphate | 74,0 mg/l | 250 mg/l | 30 % | Mean · Fernwasserbezug WW Plaue 4 |
| Temperature | 14,2 °C | — | — | Mean · Fernwasserbezug WW Plaue 4 |
| Total organic carbon (TOC) | 1,0 mg/l | ohne anormale Veränderung | — | Mean · Fernwasserbezug WW Plaue 4 |
| Turbidity | 0,18 NTU | 1 NTU | — | Mean · Fernwasserbezug WW Plaue 4 |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 6,9 °dH | — | — | Mean · Fernwasserbezug WW Plaue 4 |
| Magnesium | 9,1 mg/l | — | — | Mean · Fernwasserbezug WW Plaue 4 |
| Total hardness | 8,3 °dH | — | — | Mean · Fernwasserbezug WW Plaue 4 |
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.
Wasserwerk Dörnfeld 2
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 1,0 mg/l | 50 mg/l | 2 % | Mean · Wasserwerk Dörnfeld 2 |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Dörnfeld 2 |
| Sulphate | 41,4 mg/l | 250 mg/l | 17 % | Mean · Wasserwerk Dörnfeld 2 |
| Sodium | 5,8 mg/l | 200 mg/l | 3 % | Mean · Wasserwerk Dörnfeld 2 |
Show all recorded parameters (16 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Dörnfeld 2 |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 1,0 mg/l | 50 mg/l | 2 % | Mean · Wasserwerk Dörnfeld 2 |
Indicator parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | 2 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · Wasserwerk Dörnfeld 2 |
| Chloride | 14,4 mg/l | 250 mg/l | 6 % | Mean · Wasserwerk Dörnfeld 2 |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Dörnfeld 2 |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Dörnfeld 2 |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Dörnfeld 2 |
| pH | 7,8 pH-Einheiten | 6,5–9,5 | — | Mean · Wasserwerk Dörnfeld 2 |
| Sodium | 5,8 mg/l | 200 mg/l | 3 % | Mean · Wasserwerk Dörnfeld 2 |
| Sulphate | 41,4 mg/l | 250 mg/l | 17 % | Mean · Wasserwerk Dörnfeld 2 |
| Temperature | 10,5 °C | — | — | Mean · Wasserwerk Dörnfeld 2 |
| Total organic carbon (TOC) | 1,4 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Dörnfeld 2 |
| Turbidity | 0,13 NTU | 1 NTU | — | Mean · Wasserwerk Dörnfeld 2 |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 5,7 °dH | — | — | Mean · Wasserwerk Dörnfeld 2 |
| Magnesium | 13,3 mg/l | — | — | Mean · Wasserwerk Dörnfeld 2 |
| Total hardness | 8,5 °dH | — | — | Mean · Wasserwerk Dörnfeld 2 |
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.
Wasserwerk Schönbrunn 1
Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV)Assigned 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 | 31,5 mg/l | 50 mg/l | 63 % | Mean · Wasserwerk Schönbrunn 1 |
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Schönbrunn 1 |
| Sulphate | 63,6 mg/l | 250 mg/l | 25 % | Mean · Wasserwerk Schönbrunn 1 |
| Sodium | 9,7 mg/l | 200 mg/l | 5 % | Mean · Wasserwerk Schönbrunn 1 |
Show all recorded parameters (16 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Schönbrunn 1 |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 31,5 mg/l | 50 mg/l | 63 % | Mean · Wasserwerk Schönbrunn 1 |
Indicator parameters (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcite dissolution capacity | -28 mg/l CaCO3 | 5 mg/l CaCO3 | — | Mean · Wasserwerk Schönbrunn 1 |
| Chloride | 20,8 mg/l | 250 mg/l | 8 % | Mean · Wasserwerk Schönbrunn 1 |
| Coliform bacteria | 0 KbE/100 ml | 0/100 ml | — | Mean · Wasserwerk Schönbrunn 1 |
| Colony count 22 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Schönbrunn 1 |
| Colony count 36 °C | 0 KbE/ml | ohne anormale Veränderung | — | Mean · Wasserwerk Schönbrunn 1 |
| pH | 7,5 pH-Einheiten | 6,5–9,5 | — | Mean · Wasserwerk Schönbrunn 1 |
| Sodium | 9,7 mg/l | 200 mg/l | 5 % | Mean · Wasserwerk Schönbrunn 1 |
| Sulphate | 63,6 mg/l | 250 mg/l | 25 % | Mean · Wasserwerk Schönbrunn 1 |
| Temperature | 10,7 °C | — | — | Mean · Wasserwerk Schönbrunn 1 |
| Total organic carbon (TOC) | 1,1 mg/l | ohne anormale Veränderung | — | Mean · Wasserwerk Schönbrunn 1 |
| Turbidity | 0,12 NTU | 1 NTU | — | Mean · Wasserwerk Schönbrunn 1 |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Carbonate hardness | 16,0 °dH | — | — | Mean · Wasserwerk Schönbrunn 1 |
| Magnesium | 22,0 mg/l | — | — | Mean · Wasserwerk Schönbrunn 1 |
| Total hardness | 21,3 °dH | — | — | Mean · Wasserwerk Schönbrunn 1 |
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 99310
- How hard is the water in Postcode 99310?
- Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV) publishes a total hardness of 10.6 °dH for the supply zone arnstadt gesamt (hardness range medium). 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: Stand: Januar 2026, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 99310?
- Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV) publishes a nitrate value of 14,3 mg/l for the supply zone arnstadt gesamt. The statutory parametric value is 50 mg/l; the measured value represents 29 % of the parametric value. Basis: Stand: Januar 2026, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 99310?
- Wasser-/Abwasserzweckverband Arnstadt und Umgebung (WAZV). The values shown here come from the supply zone arnstadt gesamt 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.