Drinking water in 50374
For this postcode the responsible water supplier 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 1 underneath.
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.
WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
RWE Power AGAssigned 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 21/03/2025. 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 | < 0,7 (± 0,1) mg/l below limit of quantification | 50 mg/l | < 1 % * | Single value |
| Lead | < 2,5 (± 0,3) µg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Escherichia coli (E. coli) | 0 (± 0) KBE/100 ml | 0/100 ml | — | Single value |
| Sulphate | 173 (± 20,9) mg/l | 250 mg/l | — | Single value |
| Sodium | 15,7 (± 1,0) mg/l | 200 mg/l | — | 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 (87 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 (± 0) KBE/100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 (± 0) KBE/100 ml | 0/100 ml | — | Single value |
Chemical parameters (62)
| 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 |
| 2,6-Dichlorobenzamide (BAM) | n.b. µg/l not determined | — | — | Single value |
| Acrylamide | < 0,025 µg/l below limit of quantification | 0.1 µg/l | < 25 % * | Single value |
| Antimony | < 2,0 (± 0,6) µg/l below limit of quantification | 5 µg/l | < 40 % * | Single value |
| Arsenic | < 0,5 (± 0,1) µg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Atrazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Benzene | < 0,25 µg/l below limit of quantification | 1 µg/l | < 25 % * | Single value |
| Benzo(a)pyrene | < 1,0 ng/l below limit of quantification | 10 ng/l | < 10 % * | Single value |
| Benzo(b)fluoranthene | < 1,0 ng/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | < 1,0 ng/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | < 1,0 ng/l below limit of quantification | — | — | Single value |
| Bisphenol A | n.b. mg/l not determined | 2.5 µg/l | — | Single value |
| Boron | < 0,02 (± 0,01) mg/l below limit of quantification | 1 mg/l | < 2 % * | Single value |
| Bromacil | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Bromate | < 0,005 (± 0,002) mg/l below limit of quantification | 10 µg/l | < 50 % * | Single value |
| Cadmium | < 0,1 (± 0,1) µg/l below limit of quantification | 3 µg/l | < 3 % * | Single value |
| Carbofuran | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Chloridazon | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Chromium | < 1,0 (± 0,2) µg/l below limit of quantification | 25 µg/l | < 4 % * | Single value |
| Copper | < 0,2 (± 0,1) µg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value |
| Cyanazine | n.b. µg/l not determined | — | — | Single value |
| Cyanide | < 0,02 (± 0,01) mg/l below limit of quantification | 50 µg/l | < 40 % * | Single value |
| Desethylatrazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Diuron | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Epichlorohydrin | < 0,03 µg/l below limit of quantification | 0.1 µg/l | < 30 % * | Single value |
| Ethofumesate | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Fenuron | n.b. µg/l not determined | — | — | Single value |
| Flufenacet | n.b. µg/l not determined | — | — | Single value |
| Fluoride | 0,08 (± 0,01) mg/l | 1.5 mg/l | — | Single value |
| Hexazinone | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | < 1,0 ng/l below limit of quantification | — | — | Single value |
| Isoproturon | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Lead | < 2,5 (± 0,3) µg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Mercury | 0,02 (± 0) µg/l | 1 µg/l | — | Single value |
| Metalaxyl | n.b. µg/l not determined | — | — | Single value |
| Metamitron | n.b. µg/l not determined | — | — | Single value |
| Metazachlor | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Metobromuron | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Metolachlor | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Metoxuron | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Nickel | < 2,0 (± 0,3) µg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | < 0,7 (± 0,1) mg/l below limit of quantification | 50 mg/l | < 1 % * | Single value |
| Nitrite | < 0,02 (± 0,01) mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Pesticides — Total | n.b. µg/l not determined | 0.5 µg/l | — | Single value |
| Polycyclic aromatic hydrocarbons | n.b. ng/l not determined | 0.1 µg/l | — | Single value |
| Prometryn | n.b. µg/l not determined | — | — | Single value |
| Propazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Propiconazole | n.b. µg/l not determined | — | — | Single value |
| Selenium | < 3,0 (± 0,6) µg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Simazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Tebuconazole | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | < 0,025 µg/l below limit of quantification | — | — | Single value |
| Terbutryn | n.b. µg/l not determined | — | — | Single value |
| Tetrachloroethene | < 0,5 µg/l below limit of quantification | — | — | Single value |
| Triadimenol | n.b. µg/l not determined | — | — | Single value |
| Trichloroethene | < 0,5 µg/l below limit of quantification | — | — | Single value |
| Uranium | < 0,1 (± 0,1) µg/l below limit of quantification | 10 µg/l | < 1 % * | Single value |
| Vinyl chloride | < 0,5 µg/l below limit of quantification | 0.5 µg/l | < 100 % * | 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 (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,05 (± 0,01) mg/l below limit of quantification | 0.2 mg/l | < 25 % * | Single value |
| Ammonium | < 0,10 (± 0,02) mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Single value |
| Calcite dissolution capacity | -8,4 (± 5) mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 50,7 (± 2,6) mg/l | 250 mg/l | — | Single value |
| Coliform bacteria | 0 (± 0) KBE/100 ml | 0/100 ml | — | Single value |
| Colour | < 0,1 (± 0,1) 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Iron | < 0,02 (± 0,01) mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Single value |
| Manganese | < 0,02 (± 0,01) mg/l below limit of quantification | 50 µg/l | < 40 % * | Single value |
| Odour | geruchlos | für den Verbraucher annehmbar | — | Single value |
| pH | 7,5 (± 0,1) | 6,5–9,5 | — | Single value |
| Sodium | 15,7 (± 1,0) mg/l | 200 mg/l | — | Single value |
| Sulphate | 173 (± 20,9) mg/l | 250 mg/l | — | Single value |
| Taste | geschmacklos | für den Verbraucher annehmbar | — | Single value |
| Temperature | 14,0 (± 0,7) °C | — | — | Single value |
| Total organic carbon (TOC) | < 0,8 (± 0,1) 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 (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,85 (± 0,13) mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,16 (± 0,09) mmol/l | — | — | Single value |
| Calcium | 117 (± 13,5) mg/l | — | — | Single value |
| Hydrogen carbonate | 173,9 mg/l | — | — | Single value |
| Magnesium | 19,7 (± 2,7) mg/l | — | — | Single value |
| Oxygen | 10,2 (± 1,1) mg/l | — | — | Single value |
| Potassium | 3,1 (± 0,2) mg/l | — | — | Single value |
| Total hardness | 3,73 (± 0,47) mmol/l | — | — | 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://www.stw-erftstadt.de/fileadmin/Medienablage/Content/Dokumente/Wasser/Trinkwasseranalyse-20250321.pdf · 21.03.2025 · 23.10.2024 - 21.03.2025 · retrieved on 11/07/2026
Show 1 more supply zone in this postcode
Entnahmestelle: HB Lommersum, Behälterausgang, Probenahmehahn (Probenahmeort: 53919 Weilerswist-Lommersum, Derkumerstraße, HB)
Verbandswasserwerk GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
21.6 °dH
Hardness range hard
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 6,2 mg/l | 50 mg/l | 12 % | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Sulphate | 150 mg/l | 250 mg/l | 60 % | Single value |
| Sodium | 30,9 mg/l | 200 mg/l | 15 % | 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 (86 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100 ml | 0/100 ml | — | Single value |
Chemical parameters (58)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,0005 mg/l below limit of quantification | 3 µg/l | < 17 % * | Single value |
| 1,2-Dichloropropane | < 0,1 µg/l below limit of quantification | — | — | Single value |
| 2,4-D | < 0,00002 mg/l below limit of quantification | — | — | Single value |
| Acrylamide | < 0,00005 mg/l below limit of quantification | 0.1 µg/l | < 50 % * | Single value |
| Antimony | < 0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Atrazine | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Bentazone | < 0,00002 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 | < 0,000001 mg/l below limit of quantification | 10 ng/l | < 10 % * | Single value |
| Benzo(b)fluoranthene | < 0,000001 mg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | < 0,000001 mg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | < 0,000001 mg/l below limit of quantification | — | — | Single value |
| Bisphenol A | < 0,00001 mg/l below limit of quantification | 2.5 µg/l | < 0.4 % * | Single value |
| Boron | 0,06 mg/l | 1 mg/l | 6 % | Single value |
| Bromacil | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Bromate | < 0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Bromodichloromethane | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Cadmium | < 0,0001 mg/l below limit of quantification | 3 µg/l | < 3 % * | Single value |
| Carbofuran | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Chloridazon | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Chromium | < 0,0005 mg/l below limit of quantification | 25 µg/l | < 2 % * | Single value |
| Clopyralid | < 0,00005 mg/l below limit of quantification | — | — | Single value |
| Copper | < 0,001 mg/l below limit of quantification | 2 mg/l | < < 0.1 % * | Single value |
| Cyanide | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Dibromochloromethane | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Dicamba | < 0,00005 mg/l below limit of quantification | — | — | Single value |
| Dichlorprop | < 0,00002 mg/l below limit of quantification | — | — | Single value |
| Diuron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,21 mg/l | 1.5 mg/l | 14 % | Single value |
| Hexazinone | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | < 0,000001 mg/l below limit of quantification | — | — | Single value |
| Isoproturon | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Lead | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| MCPA | < 0,00002 mg/l below limit of quantification | — | — | Single value |
| Mecoprop | < 0,00002 mg/l below limit of quantification | — | — | Single value |
| Mercury | < 0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metazachlor | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Metobromuron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Metolachlor | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Metoxuron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Monuron | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Nickel | < 0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 6,2 mg/l | 50 mg/l | 12 % | Single value |
| Nitrite | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Single value |
| Propazine | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Selenium | < 0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Simazine | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | < 0,000025 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | < 0,0005 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | (n. b.) mg/l not determined | 50 µg/l | — | Single value |
| Uranium | 0,0005 mg/l | 10 µg/l | 5 % | Single value |
| Vinyl chloride | < 0,0005 mg/l below limit of quantification | 0.5 µg/l | < 100 % * | 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 (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,005 mg/l below limit of quantification | 0.2 mg/l | < 3 % * | Single value |
| Ammonium | < 0,06 mg/l below limit of quantification | 0.5 mg/l | < 12 % * | Single value |
| Calcite dissolution capacity | -11 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 54 mg/l | 250 mg/l | 22 % | Single value |
| Coliform bacteria | 0 MPN/100 ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 KBE/1 ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 KBE/1 ml | ohne anormale Veränderung | — | Single value |
| Conductivity (25 °C) | 843 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,018 mg/l | 0.2 mg/l | 9 % | Single value |
| Manganese | 0,006 mg/l | 50 µg/l | 12 % | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | < 0,5 mg O2/l below limit of quantification | 5 mg/l O2 | — | Single value |
| pH | 7,51 | 6,5–9,5 | — | Single value |
| Sodium | 30,9 mg/l | 200 mg/l | 15 % | Single value |
| Sulphate | 150 mg/l | 250 mg/l | 60 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Temperature | 13,5 °C | — | — | Single value |
| Total organic carbon (TOC) | < 1,0 mg/l below limit of quantification | ohne anormale Veränderung | — | Single value |
| Turbidity | < 0,10 FNU 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.
Further parameters (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,9 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,5 mmol/l | — | — | Single value |
| Calcium | 109 mg/l | — | — | Single value |
| Magnesium | 27,6 mg/l | — | — | Single value |
| Phosphate | < 0,6 mg/l below limit of quantification | — | — | Single value |
| Potassium | 5,1 mg/l | — | — | Single value |
| Total hardness | 3,86 mmol/l | — | — | 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/ee899e8f-6a55-4d8f-9d4c-482d20481de8 · 03.11.2025 (Digital signiert) · Prüfzeitraum 29.09.2025 - 30.10.2025 · retrieved on 27/07/2026
Frequent questions about postcode 50374
- How much nitrate is in the drinking water in Postcode 50374?
- RWE Power AG publishes a nitrate value of < 0,7 (± 0,1) mg/l for the supply zone WW Dirmerzheim: Reinwassersammelleitung h. den Filtern. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: 21.03.2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 50374?
- RWE Power AG. The values shown here come from the supply zone WW Dirmerzheim: Reinwassersammelleitung h. den Filtern 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.