Drinking water in Mülheim-Kärlich
2 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.
HB Niveau
TWIST RLP - HB NiveauAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 18 mg/L | 50 mg/l | 36 % | Mean · HB Niveau |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · HB Niveau |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · HB Niveau |
| Sulphate | 63 mg/L | 250 mg/l | 25 % | Mean · HB Niveau |
| Sodium | 46 mg/L | 200 mg/l | 23 % | Mean · HB Niveau |
* 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 (29 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · HB Niveau |
Chemical parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 0.5 µg/L below limit of quantification | 5 µg/l | < 10 % * | Mean · HB Niveau |
| Arsenic | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · HB Niveau |
| Boron | < 0.1 mg/L below limit of quantification | 1 mg/l | < 10 % * | Mean · HB Niveau |
| Cadmium | < 0.3 µg/L below limit of quantification | 3 µg/l | < 10 % * | Mean · HB Niveau |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Mean · HB Niveau |
| Cyanide | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · HB Niveau |
| Fluoride | 0.27 mg/L | 1.5 mg/l | 18 % | Mean · HB Niveau |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · HB Niveau |
| Mercury | < 0.1 µg/L below limit of quantification | 1 µg/l | < 10 % * | Mean · HB Niveau |
| Nickel | 4 µg/L | 20 µg/l | 20 % | Mean · HB Niveau |
| Nitrate | 18 mg/L | 50 mg/l | 36 % | Mean · HB Niveau |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · HB Niveau |
| Selenium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · HB Niveau |
| Uranium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · HB Niveau |
* 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 (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · HB Niveau |
| Ammonium | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · HB Niveau |
| Chloride | 81 mg/L | 250 mg/l | 32 % | Mean · HB Niveau |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Mean · HB Niveau |
| Iron | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · HB Niveau |
| Manganese | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · HB Niveau |
| pH | 7.5 - | 6,5–9,5 | — | Mean · HB Niveau |
| Sodium | 46 mg/L | 200 mg/l | 23 % | Mean · HB Niveau |
| Sulphate | 63 mg/L | 250 mg/l | 25 % | Mean · HB Niveau |
| Temperature | 16 °C | — | — | Mean · HB Niveau |
* 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 | 83 mg/L | — | — | Mean · HB Niveau |
| Magnesium | 15 mg/L | — | — | Mean · HB Niveau |
| Potassium | 6.1 mg/L | — | — | Mean · HB Niveau |
| Total hardness | 2.64 mmol/l | — | — | Mean · HB Niveau |
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: 56218
Show 1 more supply zone
Wassergewinnungsanlage Kaltenengers Ausgang Weißenthurm
Verbandsgemeindewerke WeißenthurmAssigned 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 27/06/2025. 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 | 21,0000 mg/L | 50 mg/l | 42 % | Single value |
| Lead | < 1,0000 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Sulphate | 70,0000 mg/L | 250 mg/l | 28 % | Single value |
| Sodium | 50,0000 mg/L | 200 mg/l | 25 % | 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 (78 — most recent value per parameter)
Chemical parameters (63)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,1,1-Trichloroethane | < 1,0000 µg/L below limit of quantification | — | — | Single value |
| 1,2-dichloroethane | < 0,3000 µg/L below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Acrylamide | < 0,0300 µg/L below limit of quantification | 0.1 µg/l | < 30 % * | Single value |
| Antimony | < 0,5000 µg/L below limit of quantification | 5 µg/l | < 10 % * | Single value |
| Arsenic | < 1,0000 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Atrazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Bentazone | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Benzene | < 0,2000 µg/L below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Benzo(a)pyrene | < 0,0025 µg/L below limit of quantification | 10 ng/l | < 25 % * | Single value |
| Benzo(b)fluoranthene | < 0,0100 µg/L below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | < 0,0100 µg/L below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | < 0,0100 µg/L below limit of quantification | — | — | Single value |
| Bisphenol A | < 0,3000 µg/L below limit of quantification | 2.5 µg/l | < 12 % * | Single value |
| Boron | < 0,1000 mg/L below limit of quantification | 1 mg/l | < 10 % * | Single value |
| Boscalid | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Bromacil | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Bromate | < 2,5000 µg/L below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Bromodichloromethane | < 2,0000 µg/L below limit of quantification | — | — | Single value |
| Cadmium | < 0,3000 µg/L below limit of quantification | 3 µg/l | < 10 % * | Single value |
| Chloridazon | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Chlorotoluron | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Chromium | < 5,0000 µg/L below limit of quantification | 25 µg/l | < 20 % * | Single value |
| Copper | < 0,0500 mg/L below limit of quantification | 2 mg/l | < 3 % * | Single value |
| Cyanide | < 0,0050 mg/L below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Desisopropylatrazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Dibromochloromethane | < 2,0000 µg/L below limit of quantification | — | — | Single value |
| Dichlorprop | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Diflufenican | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Dimethachlor | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Dimethenamid | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Diuron | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Epichlorohydrin | < 0,1000 µg/L below limit of quantification | 0.1 µg/l | < 100 % * | Single value |
| Flufenacet | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Fluoride | 0,3100 mg/L | 1.5 mg/l | 21 % | Single value |
| Glyphosate | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | < 0,0100 µg/L below limit of quantification | — | — | Single value |
| Isoproturon | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Lead | < 1,0000 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Lenacil | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| MCPA | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Mecoprop | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Mercury | < 0,1000 µg/L below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metalaxyl | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Metazachlor | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Metolachlor | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Metolachlor sulfonic acid | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Nickel | 2,5000 µg/L | 20 µg/l | 13 % | Single value |
| Nitrate | 21,0000 mg/L | 50 mg/l | 42 % | Single value |
| Nitrite | < 0,0500 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Propazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Propiconazole | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Selenium | < 1,0000 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Simazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Tebuconazole | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Terbuthylazine | < 0,0300 µg/L below limit of quantification | — | — | Single value |
| Tetrachloroethene | < 1,0000 µg/L below limit of quantification | — | — | Single value |
| Tetrachloromethane | < 1,0000 µg/L below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | < 2,0000 µg/L below limit of quantification | — | — | Single value |
| Trichloroethene | < 1,0000 µg/L below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | < 2,0000 µg/L below limit of quantification | — | — | Single value |
| Uranium | < 1,0000 µg/L below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Vinyl chloride | < 0,2000 µg/L below limit of quantification | 0.5 µg/l | < 40 % * | 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 (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | < 1,0000 µg/L below limit of quantification | 60 µg/l UBA guide value | < 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.
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | 0,0560 µg/L | — | — | Single value |
Indicator parameters (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,0200 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Single value |
| Ammonium | < 0,0500 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Calcite dissolution capacity | -9,0000 mg/L | 5 mg/l CaCO3 | — | Single value |
| Chloride | 99,0000 mg/L | 250 mg/l | 40 % | Single value |
| Iron | < 0,0200 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Single value |
| Manganese | < 0,0050 mg/L below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Sodium | 50,0000 mg/L | 200 mg/l | 25 % | Single value |
| Sulphate | 70,0000 mg/L | 250 mg/l | 28 % | Single value |
| Total organic carbon (TOC) | < 1,0000 mg/L below limit of quantification | 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 86,0000 mg/L | — | — | Single value |
| Magnesium | 16,0000 mg/L | — | — | Single value |
| Potassium | 6,8000 mg/L | — | — | Single value |
| Total hardness | 15,0000 Grad 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.
Postcodes in this zone: 56218
Frequently asked questions about drinking water in Mülheim-Kärlich
- How hard is the water in Mülheim-Kärlich?
- TWIST RLP - HB Niveau publishes a total hardness of 2.64 mmol/l for the supply zone HB Niveau — that corresponds to 14.8 °dH. 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 13/07/2026.
- How much nitrate is in the drinking water in Mülheim-Kärlich?
- TWIST RLP - HB Niveau publishes a nitrate value of 18 mg/L for the supply zone HB Niveau. The statutory parametric value is 50 mg/l; the measured value represents 36 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
- Who supplies the drinking water in Mülheim-Kärlich?
- TWIST RLP - HB Niveau. The values shown here come from the supply zone HB Niveau 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.