Drinking water in Diepholz
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 St. Hülfe, DIEP02W01TZ739, Reinwasser-Ausgang, Entnahmehahn
Stadtwerke EVB Huntetal Netz GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
9.9 °dH
Hardness range mittel
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2,04 mg/l | 50 mg/l | 4 % | Single value |
| Lead | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Sulphate | 56,8 mg/l | 250 mg/l | 23 % | Single value |
| Sodium | 14,7 mg/l | 200 mg/l | 7 % | 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 (112 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Single value |
Chemical parameters (60)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,1 µg/l below limit of quantification | 3 µg/l | < 3 % * | Single value |
| 2,6-Dichlorobenzamide (BAM) | <0,03 µg/l below limit of quantification | — | — | Single value |
| Acrylamide | - not determined Unit not stated in the document | 0.1 µg/l | — | Single value |
| AMPA | <0,03 µg/l below limit of quantification | — | — | Single value |
| Antimony | <0,0005 mg/l below limit of quantification | 5 µg/l | < 10 % * | Single value |
| Arsenic | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Atrazine | <0,03 µg/l below limit of quantification | — | — | Single value |
| Bentazone | <0,02 µg/l below limit of quantification | — | — | Single value |
| Benzene | <0,10 µg/l below limit of quantification | 1 µg/l | < 10 % * | Single value |
| Benzo(a)pyrene | <0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Bisphenol A | <0,010 µg/l below limit of quantification | 2.5 µg/l | < 0.4 % * | Single value |
| Boron | 0,012 mg/l | 1 mg/l | 1 % | Single value |
| Bromacil | <0,03 µg/l below limit of quantification | — | — | Single value |
| Bromate | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Cadmium | <0,0002 mg/l below limit of quantification | 3 µg/l | < 7 % * | Single value |
| Chlorate | - not determined Unit not stated in the document | 70 µg/l | — | Single value |
| Chloridazon | <0,03 µg/l below limit of quantification | — | — | Single value |
| Chlorite | - not determined Unit not stated in the document | 0.2 mg/l | — | Single value |
| Chlorotoluron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Chromium | <0,002 mg/l below limit of quantification | 25 µg/l | < 8 % * | Single value |
| Copper | <0,002 mg/l below limit of quantification | 2 mg/l | < 0.1 % * | Single value |
| Cyanide | <0,0050 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Desethylatrazine | <0,03 µg/l below limit of quantification | — | — | Single value |
| Desisopropylatrazine | <0,03 µg/l below limit of quantification | — | — | Single value |
| Dibromoacetic acid | - not determined | — | — | Single value |
| Dichloroacetic acid | - not determined | — | — | Single value |
| Dichlorprop | <0,03 µg/l below limit of quantification | — | — | Single value |
| Dimethachlor | <0,03 µg/l below limit of quantification | — | — | Single value |
| Diuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Epichlorohydrin | - not determined Unit not stated in the document | 0.1 µg/l | — | Single value |
| Ethidimuron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Ethofumesate | <0,03 µg/l below limit of quantification | — | — | Single value |
| Fluoride | <0,10 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value |
| Glyphosate | <0,03 µg/l below limit of quantification | — | — | Single value |
| Haloacetic acids (HAA) | - not determined Unit not stated in the document | 60 µg/l | — | Single value |
| Isoproturon | <0,03 µg/l below limit of quantification | — | — | Single value |
| Lead | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| MCPA | <0,02 µg/l below limit of quantification | — | — | Single value |
| Mecoprop | <0,02 µg/l below limit of quantification | — | — | Single value |
| Mercury | <0,0004 mg/l below limit of quantification | 1 µg/l | < 40 % * | Single value |
| Metalaxyl | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metamitron | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metazachlor | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metolachlor | <0,03 µg/l below limit of quantification | — | — | Single value |
| Metribuzin | <0,03 µg/l below limit of quantification | — | — | Single value |
| Microcystin-LR | - not determined Unit not stated in the document | 1 µg/l | — | Single value |
| Monobromoacetic acid | - not determined | — | — | Single value |
| Monochloroacetic acid | - not determined | — | — | Single value |
| Nickel | <0,002 mg/l below limit of quantification | 20 µg/l | < 10 % * | Single value |
| Nitrate | 2,04 mg/l | 50 mg/l | 4 % | Single value |
| Nitrite | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Oxadixyl | <0,03 µg/l below limit of quantification | — | — | Single value |
| Polycyclic aromatic hydrocarbons | 0,000 µg/l | 0.1 µg/l | 0 % | Single value |
| Selenium | <0,0005 mg/l below limit of quantification | 10 µg/l | < 5 % * | Single value |
| Simazine | <0,03 µg/l below limit of quantification | — | — | Single value |
| Terbuthylazine | <0,03 µg/l below limit of quantification | — | — | Single value |
| Trichloroacetic acid | - not determined | — | — | Single value |
| Trihalomethanes — Total | 0,00 µg/l | 50 µg/l | 0 % | Single value |
| Uranium | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Vinyl chloride | - not determined Unit not stated in the document | 0.5 µg/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.
PFAS (21)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| HFPO-DA (GenX) | - not determined | — | — | Single value |
| Perfluorobutane sulfonic acid (PFBS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecane sulfonic acid (PFDoDS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexanoic acid (PFHxA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanoic acid (PFOA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanesulfonic acid (PFUnDS) | <0,001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0,001 µg/l below limit of quantification | — | — | Single value |
Indicator parameters (20)
| 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 | 1,0 mg/l | 5 mg/l CaCO3 | — | Single value |
| Chloride | 33,0 mg/l | 250 mg/l | 13 % | Single value |
| Coliform bacteria | 0 KBE/100ml | 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 |
| Colour | <0,1 m-1 below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 437 µS/cm | 2,790 µS/cm | — | Single value |
| Iron | 0,060 mg/l | 0.2 mg/l | 30 % | Single value |
| Manganese | <0,010 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Oxidisability | - not determined Unit not stated in the document | 5 mg/l O2 | — | Single value |
| pH | 7,62 | 6,5–9,5 | — | Single value |
| Sodium | 14,7 mg/l | 200 mg/l | 7 % | Single value |
| Sulphate | 56,8 mg/l | 250 mg/l | 23 % | Single value |
| Taste | - not determined | für den Verbraucher annehmbar | — | Single value |
| Temperature | 11,2 °C | — | — | Single value |
| Threshold odour number (TON) | - not determined | — | — | Single value |
| Total organic carbon (TOC) | 1,0 mg/l | ohne anormale Veränderung | — | Single value |
| Turbidity | normal Unit not stated in the document | 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 (9)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,17 mmol/l | — | — | Single value |
| Base capacity to pH 8.2 | 0,100 mmol/l | — | — | Single value |
| Calcium | 64,1 mg/l | — | — | Single value |
| Hardness range (WRMG) | mittel | — | — | Single value |
| Magnesium | 4,06 mg/l | — | — | Single value |
| Phosphate | <0,10 mg/l below limit of quantification | — | — | Single value |
| Potassium | 2,39 mg/l | — | — | Single value |
| Sum of alkaline earth metals | 1,77 mmol/l | — | — | Single value |
| Total hardness | 9,91 °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.stadtwerke-huntetal.de/de/Energie-Wasser/Produkte/Wasser/Wasserqualitaet/Mikrobiologische-und-Chemische-Analyse-Wasserwerk-Sankt-Huelfe.pdf · 04.06.2026 · Probenahme 22.04.2026 10:25 · retrieved on 11/07/2026
Postcodes in this zone: 49356
Show 2 more supply zones
Basekapazität bis pH 8,2
Stadtwerke EVB Huntetal Netz GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No core values are available for this zone yet.
Postcodes in this zone: 49356
Säurekapazität bis pH 4,3
Stadtwerke EVB Huntetal Netz GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No core values are available for this zone yet.
Postcodes in this zone: 49356
Frequently asked questions about drinking water in Diepholz
- How hard is the water in Diepholz?
- Stadtwerke EVB Huntetal Netz GmbH publishes a total hardness of 9.9 °dH for the supply zone WW St. Hülfe, DIEP02W01TZ739, Reinwasser-Ausgang, Entnahmehahn (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: 04.06.2026, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Diepholz?
- Stadtwerke EVB Huntetal Netz GmbH publishes a nitrate value of 2,04 mg/l for the supply zone WW St. Hülfe, DIEP02W01TZ739, Reinwasser-Ausgang, Entnahmehahn. The statutory parametric value is 50 mg/l; the measured value represents 4 % of the parametric value. Basis: 04.06.2026, retrieved on 11/07/2026.
- Who supplies the drinking water in Diepholz?
- Stadtwerke EVB Huntetal Netz GmbH. The values shown here come from the supply zone WW St. Hülfe, DIEP02W01TZ739, Reinwasser-Ausgang, Entnahmehahn 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.