Drinking water in 33829
One supply zone, water supplier: Stadt Borgholzhausen Tiefbauamt/Wasserwerk.
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 Borgholzhausen (Reinwasser Ausgang)
Stadt Borgholzhausen Tiefbauamt/WasserwerkAssigned 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 |
|---|---|---|---|---|
| Nitrate | 15 mg/l | 50 mg/l | 30 % | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Escherichia coli (E. coli) | 0 in 100 ml | 0/100 ml | — | Single value |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Single value |
| Sodium | 8,0 mg/l | 200 mg/l | 4 % | 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 (83 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 in 100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 in 100 ml | 0/100 ml | — | Single value |
Chemical parameters (59)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Single value |
| 2,4-D | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Antimony | <0,0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Single value |
| Arsenic | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Atrazine | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Bentazone | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Benzene | <0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Benzo(a)pyrene | <0,000003 mg/l below limit of quantification | 10 ng/l | < 30 % * | Single value |
| Bisphenol A | <0,00005 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Single value |
| Boron | <0,07 mg/l below limit of quantification | 1 mg/l | < 7 % * | Single value |
| Bromacil | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Bromate | <0,0025 mg/l below limit of quantification | 10 µg/l | < 25 % * | Single value |
| Bromoxynil | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Cadmium | <0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value |
| Carbetamide | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Chloridazon | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Chlorotoluron | <0,00005 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 | <0,01 mg/l below limit of quantification | 2 mg/l | < 0.5 % * | Single value |
| Cyanide | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Single value |
| Desethylatrazine | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Dicamba | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Dichlorprop | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Diflufenican | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Dimefuron | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Dimethenamid | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Diuron | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Epichlorohydrin | <0,00005 mg/l below limit of quantification | 0.1 µg/l | < 50 % * | Single value |
| Ethofumesate | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Flufenacet | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Fluoride | 0,11 mg/l | 1.5 mg/l | 7 % | Single value |
| Hexazinone | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Isoproturon | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Lead | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| MCPA | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Mecoprop | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Mercury | <0,0002 mg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Metamitron | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Methabenzthiazuron | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 15 mg/l | 50 mg/l | 30 % | Single value |
| Nitrite | <0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Pendimethalin | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Quinmerac | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Selenium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Simazine | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Terbutryn | <0,00005 mg/l below limit of quantification | — | — | Single value |
| Tetrachloroethene | <0,001 mg/l below limit of quantification | — | — | Single value |
| Trichloroethene | <0,001 mg/l below limit of quantification | — | — | Single value |
| Trihalomethanes — Total | <0,004 mg/l below limit of quantification | 50 µg/l | < 8 % * | Single value |
| Uranium | <0,001 mg/l below limit of quantification | 10 µg/l | < 10 % * | Single value |
| Vinyl chloride | <0,0002 mg/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.
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Ammonium | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Calcite dissolution capacity | 3,3 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 15 mg/l | 250 mg/l | 6 % | Single value |
| Coliform bacteria | 0 in 100 ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 in 1 ml | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 0 in 1 ml | ohne anormale Veränderung | — | Single value |
| Colour | <0,1 1/m below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Iron | <0,01 mg/l below limit of quantification | 0.2 mg/l | < 5 % * | Single value |
| Manganese | <0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Odour | ohne | für den Verbraucher annehmbar | — | Single value |
| pH | 7,37 | 6,5–9,5 | — | Single value |
| Sodium | 8,0 mg/l | 200 mg/l | 4 % | Single value |
| Sulphate | 38 mg/l | 250 mg/l | 15 % | Single value |
| Temperature | 9,3 °C | — | — | Single value |
| Total organic carbon (TOC) | 0,6 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | 0,02 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 (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 3,87 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,33 mmol/l | — | — | Single value |
| Calcium | 84,6 mg/l | — | — | Single value |
| Magnesium | 7,3 mg/l | — | — | Single value |
| Potassium | 1,2 mg/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.borgholzhausen.de/rathaus-politik-wirtschaft/kommunale-betriebe/wasserwerk/tw-analyse-ausgang.pdf?cid=334 · Bielefeld, den 11.03.2026 · 10.02.2026 · retrieved on 13/07/2026
Frequent questions about postcode 33829
- How much nitrate is in the drinking water in Postcode 33829?
- Stadt Borgholzhausen Tiefbauamt/Wasserwerk publishes a nitrate value of 15 mg/l for the supply zone WW Borgholzhausen (Reinwasser Ausgang). The statutory parametric value is 50 mg/l; the measured value represents 30 % of the parametric value. Basis: Bielefeld, den 11.03.2026, retrieved on 13/07/2026.
- Who supplies the drinking water in Postcode 33829?
- Stadt Borgholzhausen Tiefbauamt/Wasserwerk. The values shown here come from the supply zone WW Borgholzhausen (Reinwasser Ausgang) 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.