Drinking water in Saarlouis
3 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
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 Bisttal / Reinwasser, abgehende Leitung ZH
Stadtwerke Saarlouis GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
11.2 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 15,9 mg/l | 50 mg/l | 32 % | Single value |
| Lead | <0,30 µg/l below limit of quantification | 10 µg/l | < 3 % * | Single value |
| Sulphate | 40,0 mg/l | 250 mg/l | 16 % | Single value |
| Sodium | 12,8 mg/l | 200 mg/l | 6 % | 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 (96 — most recent value per parameter)
Chemical parameters (76)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Antimony | <0,3 µg/l below limit of quantification | 5 µg/l | < 6 % * | Single value |
| Arsenic | <0,6 µg/l below limit of quantification | 10 µg/l | < 6 % * | Single value |
| Atrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Benzo(a)pyrene | <0,001 µg/l below limit of quantification | 10 ng/l | < 10 % * | Single value |
| Benzo(b)fluoranthene | <0,001 µg/l below limit of quantification | — | — | Single value |
| Benzo(ghi)perylene | <0,001 µg/l below limit of quantification | — | — | Single value |
| Benzo(k)fluoranthene | <0,001 µg/l below limit of quantification | — | — | Single value |
| Bisphenol A | <0,10 µg/l below limit of quantification | 2.5 µg/l | < 4 % * | Single value |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Single value |
| Boscalid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromacil | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromate | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Bromodichloromethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,20 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Carbetamide | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chromium | <0,3 µg/l below limit of quantification | 25 µg/l | < 1 % * | Single value |
| Clopyralid | <0,04 µg/l below limit of quantification | — | — | Single value |
| Copper | <0,002 mg/l below limit of quantification | 2 mg/l | < 0.1 % * | Single value |
| Cyanazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dibromochloromethane | <0,2 µg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimefuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimethenamid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fenuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fluoranthene | <0,001 µg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,14 mg/l | 1.5 mg/l | 9 % | Single value |
| Hexazinone | <0,02 µg/l below limit of quantification | — | — | Single value |
| Imidacloprid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Indeno(1,2,3-cd)pyrene | <0,001 µg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Lead | <0,30 µg/l below limit of quantification | 10 µg/l | < 3 % * | Single value |
| Mercury | <0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metalaxyl | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor acid | 0,02 µg/l | — | — | Single value |
| Metazachlor sulfonic acid | 0,06 µg/l | — | — | Single value |
| Methabenzthiazuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metobromuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metoxuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Monuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nickel | 1,3 µg/l | 20 µg/l | 7 % | Single value |
| Nicosulfuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nitrate | 15,9 mg/l | 50 mg/l | 32 % | Single value |
| Nitrite | <0,005 mg/l below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Pendimethalin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prometryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propiconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prosulfocarb | <0,02 µg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,04 µg/l below limit of quantification | — | — | Single value |
| Selenium | <0,60 µg/l below limit of quantification | 10 µg/l | < 6 % * | Single value |
| Simazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tebuconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbutryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,2 µg/l below limit of quantification | — | — | Single value |
| Thiacloprid | <0,05 µg/l below limit of quantification | — | — | Single value |
| Triadimenol | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tribromomethane (bromoform) | <0,2 µg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,2 µg/l below limit of quantification | — | — | Single value |
| Trichloromethane (chloroform) | <0,2 µg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | 0,0 µg/l | 50 µg/l | 0 % | Single value |
| Uranium | 0,20 µg/l | 10 µg/l | 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.
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (11)
| 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 | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Chloride | 24,4 mg/l | 250 mg/l | 10 % | Single value |
| Conductivity (25 °C) | 486 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,016 mg/l | 0.2 mg/l | 8 % | Single value |
| Manganese | 0,003 mg/l | 50 µg/l | 6 % | Single value |
| Odour | nein | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | <0,50 mg/l O2 below limit of quantification | 5 mg/l O2 | — | Single value |
| Sodium | 12,8 mg/l | 200 mg/l | 6 % | Single value |
| Sulphate | 40,0 mg/l | 250 mg/l | 16 % | Single value |
| Turbidity | 0,46 FNU | 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 (8)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,10 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,09 mmol/l | — | — | Single value |
| Calcium | 50,8 mg/l | — | — | Single value |
| Magnesium | 17,9 mg/l | — | — | Single value |
| Potassium | 4,9 mg/l | — | — | Single value |
| Sum of anion equivalents | 4,82 mmol/l | — | — | Single value |
| Sum of cation equivalents | 4,69 mmol/l | — | — | Single value |
| Total hardness | 2,00 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.swsls.de/media/pages/downloads/trinkwasser/wasseranalyse-lisdorfer-berg/18df6360fe-1761637738/ww-bisttal-2025.pdf · 1. Ausfertigung vom 22.09.2025 · Probe vom 02.09.2025 · retrieved on 11/07/2026
Postcodes in this zone: 66740
Show 2 more supply zones
WW Ost Roden Bruchweg / Reinwasserbehälter
Stadtwerke Saarlouis GmbHAssigned 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 20/08/2025. 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.
Water hardness
7.9 °dH
Hardness range soft
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 36,7 mg/l | 50 mg/l | 73 % | Single value |
| Sulphate | 28,5 mg/l | 250 mg/l | 11 % | Single value |
| Sodium | 12,9 mg/l | 200 mg/l | 6 % | Single value |
Show all recorded parameters (78 — most recent value per parameter)
Chemical parameters (58)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Atrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Single value |
| Boscalid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromacil | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromate | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Carbetamide | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chromium | <0,3 µg/l below limit of quantification | 25 µg/l | < 1 % * | Single value |
| Clopyralid | <0,04 µg/l below limit of quantification | — | — | Single value |
| Cyanazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimefuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimethenamid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fenuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,04 mg/l | 1.5 mg/l | 3 % | Single value |
| Hexazinone | <0,02 µg/l below limit of quantification | — | — | Single value |
| Imidacloprid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Mercury | <0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metalaxyl | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor acid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor sulfonic acid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metobromuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metoxuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Monuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nicosulfuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nitrate | 36,7 mg/l | 50 mg/l | 73 % | Single value |
| Nitrite | <0,005 mg/l below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Pendimethalin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prometryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propiconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prosulfocarb | <0,02 µg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,04 µg/l below limit of quantification | — | — | Single value |
| Selenium | <0,60 µg/l below limit of quantification | 10 µg/l | < 6 % * | Single value |
| Simazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tebuconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbutryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | 1,0 µg/l | — | — | Single value |
| Thiacloprid | <0,05 µg/l below limit of quantification | — | — | Single value |
| Triadimenol | <0,02 µg/l below limit of quantification | — | — | Single value |
| Trichloroethene | 1,7 µg/l | — | — | Single value |
| Uranium | <0,20 µg/l below limit of quantification | 10 µg/l | < 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.
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,015 mg/l | 0.2 mg/l | 8 % | Single value |
| Ammonium | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Chloride | 36,5 mg/l | 250 mg/l | 15 % | Single value |
| Conductivity (25 °C) | 394 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | <0,005 mg/l below limit of quantification | 0.2 mg/l | < 3 % * | Single value |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Odour | nein | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | <0,50 mg/l O2 below limit of quantification | 5 mg/l O2 | — | Single value |
| Sodium | 12,9 mg/l | 200 mg/l | 6 % | Single value |
| Sulphate | 28,5 mg/l | 250 mg/l | 11 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Turbidity | 0,25 FNU | 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 | 1,44 mmol/l | — | — | Single value |
| Calcium | 35,8 mg/l | — | — | Single value |
| Magnesium | 12,6 mg/l | — | — | Single value |
| Potassium | 4,8 mg/l | — | — | Single value |
| Sum of anion equivalents | 3,60 mmol/l | — | — | Single value |
| Sum of cation equivalents | 3,51 mmol/l | — | — | Single value |
| Total hardness | 7,9 °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://www.swsls.de/media/pages/downloads/trinkwasser/wasseranalyse-wasserwerk-ost/86e8961d72-1758090459/02_saarlouis-ost_2025_gruppe-b_a2t1-3.pdf · 1. Ausfertigung vom 01.09.2025 · Probenahme 20.08.2025, 07:30 Uhr · retrieved on 11/07/2026
Postcodes in this zone: 66740
WW West / HB Schloßberg, linke Kammer
Stadtwerke Saarlouis GmbHAssigned 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 20/08/2025. 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.
Water hardness
11 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 37,6 mg/l | 50 mg/l | 75 % | Single value |
| Sulphate | 49,5 mg/l | 250 mg/l | 20 % | Single value |
| Sodium | 6,5 mg/l | 200 mg/l | 3 % | Single value |
Show all recorded parameters (78 — most recent value per parameter)
Chemical parameters (58)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,2 µg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Atrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Benzene | <0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Single value |
| Boscalid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromacil | <0,02 µg/l below limit of quantification | — | — | Single value |
| Bromate | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Carbetamide | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Chromium | <0,3 µg/l below limit of quantification | 25 µg/l | < 1 % * | Single value |
| Clopyralid | <0,04 µg/l below limit of quantification | — | — | Single value |
| Cyanazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimefuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Dimethenamid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Diuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fenuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,02 µg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,09 mg/l | 1.5 mg/l | 6 % | Single value |
| Hexazinone | <0,02 µg/l below limit of quantification | — | — | Single value |
| Imidacloprid | <0,02 µg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,02 µg/l below limit of quantification | — | — | Single value |
| Mercury | <0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Metalaxyl | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metazachlor acid | 0,02 µg/l | — | — | Single value |
| Metazachlor sulfonic acid | 0,14 µg/l | — | — | Single value |
| Methabenzthiazuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metobromuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metoxuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Monuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nicosulfuron | <0,02 µg/l below limit of quantification | — | — | Single value |
| Nitrate | 37,6 mg/l | 50 mg/l | 75 % | Single value |
| Nitrite | <0,005 mg/l below limit of quantification | 0.5 mg/l | < 1 % * | Single value |
| Pendimethalin | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prometryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Propiconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Prosulfocarb | <0,02 µg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,04 µg/l below limit of quantification | — | — | Single value |
| Selenium | <0,60 µg/l below limit of quantification | 10 µg/l | < 6 % * | Single value |
| Simazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tebuconazole | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,02 µg/l below limit of quantification | — | — | Single value |
| Terbutryn | <0,02 µg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,2 µg/l below limit of quantification | — | — | Single value |
| Thiacloprid | <0,05 µg/l below limit of quantification | — | — | Single value |
| Triadimenol | <0,02 µg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,2 µg/l below limit of quantification | — | — | Single value |
| Uranium | 0,20 µg/l | 10 µg/l | 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.
Metabolites (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Desphenyl-chloridazon | <0,02 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0,016 mg/l | 0.2 mg/l | 8 % | Single value |
| Ammonium | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Chloride | 17,6 mg/l | 250 mg/l | 7 % | Single value |
| Conductivity (25 °C) | 436 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,010 mg/l | 0.2 mg/l | 5 % | Single value |
| Manganese | <0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Single value |
| Odour | nein | für den Verbraucher annehmbar | — | Single value |
| Oxidisability | <0,50 mg/l O2 below limit of quantification | 5 mg/l O2 | — | Single value |
| Sodium | 6,5 mg/l | 200 mg/l | 3 % | Single value |
| Sulphate | 49,5 mg/l | 250 mg/l | 20 % | Single value |
| Taste | ohne | für den Verbraucher annehmbar | — | Single value |
| Turbidity | 0,42 FNU | 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 | 2,20 mmol/l | — | — | Single value |
| Calcium | 55,9 mg/l | — | — | Single value |
| Magnesium | 12,3 mg/l | — | — | Single value |
| Potassium | 3,6 mg/l | — | — | Single value |
| Sum of anion equivalents | 4,28 mmol/l | — | — | Single value |
| Sum of cation equivalents | 4,18 mmol/l | — | — | Single value |
| Total hardness | 11 °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://www.swsls.de/media/pages/downloads/trinkwasser/wasseranalyse-wasserwerk-west/5112f4fb71-1758090445/02_saarlouis-west_2025_gruppe-b_at1-3.pdf · 1. Ausfertigung vom 01.09.2025 · Probenahme 20.08.2025 10:10, Probeneingang/Untersuchungsbeginn 20.08.2025 15:00 · retrieved on 11/07/2026
Postcodes in this zone: 66740
Frequently asked questions about drinking water in Saarlouis
- How hard is the water in Saarlouis?
- Stadtwerke Saarlouis GmbH publishes a total hardness of 2,00 mmol/l for the supply zone WW Bisttal / Reinwasser, abgehende Leitung ZH — that corresponds to 11.2 °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: 1. Ausfertigung vom 22.09.2025, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Saarlouis?
- Stadtwerke Saarlouis GmbH publishes a nitrate value of 15,9 mg/l for the supply zone WW Bisttal / Reinwasser, abgehende Leitung ZH. The statutory parametric value is 50 mg/l; the measured value represents 32 % of the parametric value. Basis: 1. Ausfertigung vom 22.09.2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Saarlouis?
- Stadtwerke Saarlouis GmbH. The values shown here come from the supply zone WW Bisttal / Reinwasser, abgehende Leitung ZH 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.