Drinking water in Passau
One supply zone, water supplier: Stadtwerke Passau GmbH.
How to read the share of the parametric value
12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.
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.
Insel Soldatenau
Stadtwerke Passau GmbHAssigned 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 |
|---|---|---|---|---|
| Sum of PFAS | 0,0054 | — | — | Single value |
| Nitrate | 5,4 Unit not stated in the document | 50 mg/l | — | Single value |
| Sulphate | 29,3 Unit not stated in the document | 250 mg/l | — | Single value |
| Sodium | 11,2 Unit not stated in the document | 200 mg/l | — | Single value |
Show all recorded parameters (48 — most recent value per parameter)
Chemical parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0.3 below limit of quantification Unit not stated in the document | 3 µg/l | — | Single value |
| Acrylamide | < 0.025 below limit of quantification Unit not stated in the document | 0.1 µg/l | — | Single value |
| Benzene | < 0.50 below limit of quantification Unit not stated in the document | 1 µg/l | — | Single value |
| Boron | 0,01 Unit not stated in the document | 1 mg/l | — | Single value |
| Bromate | < 0.0025 below limit of quantification Unit not stated in the document | 10 µg/l | — | Single value |
| Chromium | < 0.0005 below limit of quantification Unit not stated in the document | 25 µg/l | — | Single value |
| Cyanide | < 0.0050 below limit of quantification Unit not stated in the document | 50 µg/l | — | Single value |
| Nitrate | 5,4 Unit not stated in the document | 50 mg/l | — | Single value |
| Nitrite | < 0.01 below limit of quantification Unit not stated in the document | 0.5 mg/l | — | Single value |
PFAS (16)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | 0,0014 | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,0010 below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | 0,0015 | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | < 0.0010 below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | 0,0015 | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | < 0.0010 below limit of quantification | — | — | Single value |
| Sum of PFAS | 0,0054 | — | — | Single value |
Indicator parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0.0050 below limit of quantification Unit not stated in the document | 0.2 mg/l | — | Single value |
| Ammonium | 0.01 Unit not stated in the document | 0.5 mg/l | — | Single value |
| Calcite dissolution capacity | -1 Unit not stated in the document | 5 mg/l CaCO3 | — | Single value |
| Chloride | 21,5 Unit not stated in the document | 250 mg/l | — | Single value |
| Colour | farblos Unit not stated in the document | 0.5 m⁻¹ | — | Single value |
| Iron | < 0.010 below limit of quantification Unit not stated in the document | 0.2 mg/l | — | Single value |
| Manganese | < 0.0050 below limit of quantification Unit not stated in the document | 50 µg/l | — | Single value |
| Odour | o.B. | für den Verbraucher annehmbar | — | Single value |
| pH | 7.58 bei 14,1 øC | 6,5–9,5 | — | Single value |
| Sodium | 11,2 Unit not stated in the document | 200 mg/l | — | Single value |
| Sulphate | 29,3 Unit not stated in the document | 250 mg/l | — | Single value |
| Temperature | 13,9 | — | — | Single value |
| Total organic carbon (TOC) | 0,68 | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,11 Unit not stated in the document | 1 NTU | — | Single value |
Further parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 58,9 | — | — | Single value |
| Carbonate hardness | 9,2 | — | — | Single value |
| Dissolved organic carbon (DOC) | 0,62 | — | — | Single value |
| Free carbon dioxide | 9,0 | — | — | Single value |
| Magnesium | 13,5 | — | — | Single value |
| Potassium | 2,3 | — | — | Single value |
| Saturation index | +0,02 | — | — | Single value |
| Sum of alkaline earth metals | 2,0 | — | — | Single value |
| Total hardness | 11,4 | — | — | 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.
Source: https://energie.stadtwerke-passau.de/files/dateien/energie/daten/wasser/Dokument_Trinkasser-Analyseergebnisse.pdf · 17.11.2025 · retrieved on 11/07/2026
Postcodes in this zone: 94032 , 94034 , 94036
Frequently asked questions about drinking water in Passau
- Who supplies the drinking water in Passau?
- Stadtwerke Passau GmbH. The values shown here come from the supply zone Insel Soldatenau 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.