Drinking water in Markdorf
One supply zone, water supplier: Bodensee-Wasserversorgung.
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.
Markdorf - Bildungszentrum
Bodensee-WasserversorgungAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
9.1 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0,0000027 mg/L | 0.1 µg/l | 3 % | Single value |
| Nitrate | 4,0 mg/L | 50 mg/l | 8 % | Single value |
| Lead | <0,0005 mg/L below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Escherichia coli (E. coli) | n.n. KBE/100mL not detectable | 0/100 ml | — | Single value |
| Sulphate | 35 mg/L | 250 mg/l | 14 % | Single value |
| Sodium | 5,5 mg/L | 200 mg/l | 3 % | 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 (111 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | n.n. KBE/100mL not detectable | 0/100 ml | — | Single value |
| Intestinal enterococci | n.n. KBE/100mL not detectable | 0/100 ml | — | Single value |
Chemical parameters (67)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0003 mg/L below limit of quantification | 3 µg/l | < 10 % * | Single value |
| 2,6-Dichlorobenzamide (BAM) | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Aldrin | <0,000005 mg/L below limit of quantification | 30 ng/l | < 17 % * | Single value |
| Antimony | <0,0005 mg/L below limit of quantification | 5 µg/l | < 10 % * | Single value |
| Arsenic | 0,0008 mg/L | 10 µg/l | 8 % | Single value |
| Atrazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Bentazone | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Benzene | <0,00025 mg/L below limit of quantification | 1 µg/l | < 25 % * | Single value |
| Benzo(a)pyrene | <0,0000020 mg/L below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Benzo(b)fluoranthene | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Bisphenol A | <0,00010 mg/L below limit of quantification | 2.5 µg/l | < 4 % * | Single value |
| Boron | 0,012 mg/L | 1 mg/l | 1 % | Single value |
| Boscalid | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Bromacil | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Bromate | <0,0005 mg/L below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Bromoxynil | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Cadmium | <0,00005 mg/L below limit of quantification | 3 µg/l | < 2 % * | Single value |
| Carbetamide | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Chloridazon | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Chromium | <0,0005 mg/L below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Copper | <0,010 mg/L below limit of quantification | 2 mg/l | < 0.5 % * | Single value |
| Cyanide | <0,002 mg/L below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Desethylatrazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Dichlorprop | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Dieldrin | <0,000005 mg/L below limit of quantification | 30 ng/l | < 17 % * | Single value |
| Diuron | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Ethofumesate | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Flufenacet | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Fluoride | 0,09 mg/L | 1.5 mg/l | 6 % | Single value |
| Heptachlor | <0,000005 mg/L below limit of quantification | 30 ng/l | < 17 % * | Single value |
| Heptachlor epoxide | <0,000005 mg/L below limit of quantification | 30 ng/l | < 17 % * | Single value |
| Hexazinone | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Imidacloprid | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Isoproturon | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Lead | <0,0005 mg/L below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Lenacil | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Lindane | <0,000005 mg/L below limit of quantification | — | — | Single value |
| MCPA | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Mecoprop | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Mercury | <0,00005 mg/L below limit of quantification | 1 µg/l | < 5 % * | Single value |
| Metalaxyl | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Metamitron | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Metazachlor | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Methabenzthiazuron | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Metobromuron | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Metolachlor | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Metribuzin | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Nickel | <0,0005 mg/L below limit of quantification | 20 µg/l | < 3 % * | Single value |
| Nitrate | 4,0 mg/L | 50 mg/l | 8 % | Single value |
| Nitrite | <0,005 mg/L below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Prometryn | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Propazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Sebuthylazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Selenium | <0,0010 mg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Simazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Tebuconazole | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Terbutryn | <0,000010 mg/L below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,0005 mg/L below limit of quantification | — | — | Single value |
| Thiacloprid | <0,000020 mg/L below limit of quantification | — | — | Single value |
| Trichloroethene | <0,0010 mg/L below limit of quantification | — | — | Single value |
| Uranium | 0,0011 mg/L | 10 µg/l | 11 % | 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.
PFAS (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Perfluorobutane sulfonic acid (PFBS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | 0,0000016 mg/L | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorododecane sulfonic acid (PFDoDS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | 0,0000011 mg/L | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoroundecanesulfonic acid (PFUnDS) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,0000010 mg/L below limit of quantification | — | — | Single value |
| Sum of PFAS | 0,0000027 mg/L | 0.1 µg/l | 3 % | Single value |
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | <0,000050 mg/L below limit of quantification | — | — | Single value |
Indicator parameters (16)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,010 mg/L below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Ammonium | <0,010 mg/L below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Chloride | 7,4 mg/L | 250 mg/l | 3 % | Single value |
| Clostridium perfringens (including spores) | n.n. KBE/100mL not detectable | 0/100 ml | — | Single value |
| Coliform bacteria | n.n. KBE/100mL not detectable | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/mL | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/mL | ohne anormale Veränderung | — | Single value |
| Iron | 0,006 mg/L | 0.2 mg/l | 3 % | Single value |
| Manganese | <0,0005 mg/L below limit of quantification | 50 µg/l | < 1 % * | Single value |
| Odour | ohne - | für den Verbraucher annehmbar | — | Single value |
| pH | 8,10 - | 6,5–9,5 | — | Single value |
| Sodium | 5,5 mg/L | 200 mg/l | 3 % | Single value |
| Sulphate | 35 mg/L | 250 mg/l | 14 % | Single value |
| Taste | ohne - | für den Verbraucher annehmbar | — | Single value |
| Total organic carbon (TOC) | 1,2 mg/L | ohne anormale Veränderung | — | Single value |
| Turbidity | <0,05 NTU below limit of quantification | 1 NTU | — | 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.
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Free chlorine | <0,05 mg/L below limit of quantification | — | — | Single value |
| Total chlorine | <0,05 mg/L below limit of quantification | — | — | Single value |
Further parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Hardness range (WRMG) | mittel - | — | — | Single value |
| Total hardness | 9,1 °dH | — | — | 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://api.wasserportal.info/api/public/qualitaet/trinkwasseranalyse/c8691b42-6c9c-4cc7-a4b5-3e75fdb42ee0 · 05.05.2026 · retrieved on 27/07/2026
Postcodes in this zone: 88677
Frequently asked questions about drinking water in Markdorf
- How hard is the water in Markdorf?
- Bodensee-Wasserversorgung publishes a total hardness of 9.1 °dH for the supply zone Markdorf - Bildungszentrum (hardness range mittel). 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: Publication by the water supplier, retrieved on 27/07/2026.
- How much nitrate is in the drinking water in Markdorf?
- Bodensee-Wasserversorgung publishes a nitrate value of 4,0 mg/L for the supply zone Markdorf - Bildungszentrum. The statutory parametric value is 50 mg/l; the measured value represents 8 % of the parametric value. Basis: Publication by the water supplier, retrieved on 27/07/2026.
- Are PFAS detectable in the drinking water in Markdorf?
- Bodensee-Wasserversorgung publishes for the supply zone Markdorf - Bildungszentrum a sum value PFAS-20 of 0,0000027 mg/L (0.003 µg/l). The statutory parametric value is 0.1 µg/l; the measured value represents 3 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: Publication by the water supplier, retrieved on 27/07/2026.
- Who supplies the drinking water in Markdorf?
- Bodensee-Wasserversorgung. The values shown here come from the supply zone Markdorf - Bildungszentrum 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.