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Drinking water in 22927

One supply zone, water supplier: HAMBURG WASSER (Hamburger Wasserwerke GmbH).

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.

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
12.5 °dH
Hardness range medium
Key values Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 µg/l 0.1 µg/l
0 %
Mean · Source [6]
Nitrate 1,8 mg/l 50 mg/l
4 %
Mean · Source [2]
Lead < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Source [2]
Escherichia coli (E. coli) 0 /100 ml 0/100 ml — Maximum · Median 0 · Source [2]
Sulphate 26 mg/l 250 mg/l
10 %
Mean · Source [2]
Sodium 11,6 mg/l 200 mg/l
6 %
Mean · Source [2]

* 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 (182 — most recent value per parameter)

Microbiology (2)

Microbiology – Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100 ml 0/100 ml — Maximum · Median 0 · Source [2]
Intestinal enterococci 0 /100 ml 0/100 ml — Maximum · Median 0 · Source [2]

Chemical parameters (106)

Chemical parameters – Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
1,1,1-Trichloroethane < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
1,2-dichloroethane < 0,5 µg/l
below limit of quantification
3 µg/l
< 17 % *
Mean · Source [3]
1,2-Dichloropropane < 0,5 µg/l
below limit of quantification
— — Mean · Source [5]
2,4-D < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
2,6-Dichlorobenzamide (BAM) < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Aldrin < 0,01 µg/l
below limit of quantification
30 ng/l
< 33 % *
Mean · Source [1]
AMPA < 0,05 µg/l
below limit of quantification
— — Mean · Source [4]
Antimony < 0,1 µg/l
below limit of quantification
5 µg/l
< 2 % *
Mean · Source [2]
Arsenic < 0,5 µg/l
below limit of quantification
10 µg/l
< 5 % *
Mean · Source [2]
Atrazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Azoxystrobin < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Bentazone < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Benzene < 0,3 µg/l
below limit of quantification
1 µg/l
< 30 % *
Mean · Source [3]
Benzo(a)pyrene < 0,003 µg/l
below limit of quantification
10 ng/l
< 30 % *
Mean · Source [4]
Benzo(b)fluoranthene < 0,005 µg/l
below limit of quantification
— — Mean · Source [4]
Benzo(ghi)perylene < 0,01 µg/l
below limit of quantification
— — Mean · Source [4]
Benzo(k)fluoranthene < 0,005 µg/l
below limit of quantification
— — Mean · Source [4]
Bisphenol A < 0,05 µg/l
below limit of quantification
2.5 µg/l
< 2 % *
Mean · Source [4]
Boron < 0,05 mg/l
below limit of quantification
1 mg/l
< 5 % *
Mean · Source [2]
Boscalid < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Bromacil < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Bromate < 0,003 mg/l
below limit of quantification
10 µg/l
< 30 % *
Mean · Source [2]
Bromodichloromethane < 0,1 µg/l
below limit of quantification
— — Mean · Source [4]
Bromoxynil < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Cadmium < 0,1 µg/l
below limit of quantification
3 µg/l
< 3 % *
Mean · Source [2]
Carbetamide < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Carbofuran < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Chlorate < 0,005 mg/l
below limit of quantification
70 µg/l
< 7 % *
Mean · Source [2]
Chloridazon < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Chlorite < 0,01 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Source [2]
Chlorotoluron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Chromium < 0,5 µg/l
below limit of quantification
25 µg/l
< 2 % *
Mean · Source [2]
cis-1,2-Dichloroethene < 0,5 µg/l
below limit of quantification
— — Mean · Source [3]
Clopyralid < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Copper < 1 µg/l
below limit of quantification
2 mg/l
< < 0.1 % *
Mean · Source [2]
Cyanide < 4 µg/l
below limit of quantification
50 µg/l
< 8 % *
Mean · Source [2]
Desethylatrazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Desisopropylatrazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Dibromochloromethane < 0,1 µg/l
below limit of quantification
— — Mean · Source [4]
Dicamba < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Dichloromethane < 0,5 µg/l
below limit of quantification
— — Mean · Source [3]
Dieldrin < 0,01 µg/l
below limit of quantification
30 ng/l
< 33 % *
Mean · Source [1]
Diflufenican < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Dimefuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Dimethachlor < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Dimethachlor sulfonic acid < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Dimethenamid < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Dimethoate < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Diuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Ethidimuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Ethofumesate < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Flufenacet < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Fluoride 0,17 mg/l 1.5 mg/l
11 %
Mean · Source [2]
Glyphosate < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Haloacetic acids (HAA) 0 µg/l 60 µg/l
0 %
Mean · Source [3]
Heptachlor < 0,01 µg/l
below limit of quantification
30 ng/l
< 33 % *
Mean · Source [1]
Hexazinone < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Imidacloprid < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Indeno(1,2,3-cd)pyrene < 0,01 µg/l
below limit of quantification
— — Mean · Source [4]
Isoproturon < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Lead < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Source [2]
Lenacil < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
MCPA < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Mecoprop < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Mercury < 0,1 µg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Source [2]
Metalaxyl < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metamitron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metazachlor < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metazachlor acid 0,03 µg/l — — Mean · Source [4]
Metazachlor sulfonic acid 0,07 µg/l — — Mean · Source [4]
Methabenzthiazuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metobromuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metolachlor < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metolachlor acid < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Metolachlor sulfonic acid < 0,03 µg/l
below limit of quantification
— — Mean · Source [4]
Metoxuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Metribuzin < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Monuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Nickel < 1 µg/l
below limit of quantification
20 µg/l
< 5 % *
Mean · Source [2]
Nicosulfuron < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Nitrate 1,8 mg/l 50 mg/l
4 %
Mean · Source [2]
Nitrite < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Source [2]
Oxadixyl < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Pendimethalin < 0,03 µg/l
below limit of quantification
— — Mean · Source [1]
Polycyclic aromatic hydrocarbons 0 µg/l 0.1 µg/l
0 %
Mean · Source [4]
Prometryn < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Propazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Propiconazole < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Prosulfocarb < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Quinmerac < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Sebuthylazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Selenium < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Source [2]
Simazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Tebuconazole < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Terbuthylazine < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Terbutryn < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Tetrachloroethene < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
Tetrachloroethene and Trichloroethene (sum) 0 µg/l 10 µg/l
0 %
Mean · Source [3]
Tetrachloromethane < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
Thiacloprid < 0,03 µg/l
below limit of quantification
— — Mean · Source [5]
Tribromomethane (bromoform) < 0,1 µg/l
below limit of quantification
— — Mean · Source [4]
Trichloroethene < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
Trichloromethane (chloroform) < 0,1 µg/l
below limit of quantification
— — Mean · Source [4]
Trihalomethanes — Total 0 µg/l 50 µg/l
0 %
Mean · Source [4]
Uranium 0,2 µg/l 10 µg/l
2 %
Mean · Source [2]
Vinyl chloride < 0,1 µg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean · Source [3]

* 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 (23)

PFAS – Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
Perfluorobutane sulfonic acid (PFBS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorobutanoic acid (PFBA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorodecane sulfonic acid (PFDS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorodecanoic acid (PFDA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorododecane sulfonic acid (PFDoDS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorododecanoic acid (PFDoDA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoroheptane sulfonic acid (PFHpS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoroheptanoic acid (PFHpA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorohexane sulfonic acid (PFHxS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorohexanoic acid (PFHxA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorononane sulfonic acid (PFNS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorononanoic acid (PFNA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorooctanesulfonic acid (PFOS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorooctanoic acid (PFOA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoropentanesulfonic acid (PFPeS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoropentanoic acid (PFPeA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorotridecanesulfonic acid (PFTrDS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluorotridecanoic acid (PFTrDA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoroundecanesulfonic acid (PFUnDS) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Perfluoroundecanoic acid (PFUnDA) < 0,002 µg/l
below limit of quantification
— — Mean · Source [6]
Sum of 4 PFAS 0 µg/l — — Mean · Source [6]
Sum of PFAS 0 µg/l 0.1 µg/l
0 %
Mean · Source [6]
Trifluoroacetic acid (TFA) < 0,25 µg/l
below limit of quantification
60 µg/l
UBA guide value
< 0.4 % *
Mean · Source [4]

* 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.

Indicator parameters (18)

Indicator parameters – Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,01 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Source [2]
Ammonium < 0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Mean · Source [2]
Calcite dissolution capacity 2,47 mg/l 5 mg/l CaCO3 — Mean · Source [2]
Chloride 19 mg/l 250 mg/l
8 %
Mean · Source [2]
Clostridium perfringens (including spores) 0 /100 ml 0/100 ml — Maximum · Median 0 · Source [2]
Coliform bacteria 0 /100 ml 0/100 ml — Maximum · Median 0 · Source [2]
Colony count 22 °C 0 /ml ohne anormale Veränderung — Mean · Source [2]
Colony count 36 °C 0 /ml ohne anormale Veränderung — Mean · Source [2]
Colour 0,002 cm-1 0.5 m⁻¹ — Mean · Source [2]
Conductivity (25 °C) 476 µS/cm 2,790 µS/cm — Mean · Source [2]
Iron 0,02 mg/l 0.2 mg/l
10 %
Mean · Source [2]
Manganese < 0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Source [2]
pH 7,35 - 6,5–9,5 — Mean · Source [2]
Sodium 11,6 mg/l 200 mg/l
6 %
Mean · Source [2]
Sulphate 26 mg/l 250 mg/l
10 %
Mean · Source [2]
Temperature 10 °C — — Mean · Source [2]
Total organic carbon (TOC) 1,79 mg/l ohne anormale Veränderung — Mean · Source [2]
Turbidity 0,09 NTU 1 NTU — Mean · Source [2]

* 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 (33)

Further parameters – Großhansdorf
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,85 mmol/l — — Mean · Source [2]
Amidotrizoic acid < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Base capacity to pH 8.2 0,36 mmol/l — — Mean · Source [2]
Bezafibrate < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Calcium 79 mg/l — — Mean · Source [2]
Carbamazepine < 0,03 µg/l
below limit of quantification
— — Mean · Source [3]
Carbonate hardness 10,8 °dH — — Mean · Source [2]
Clofibric acid < 0,03 µg/l
below limit of quantification
— — Mean · Source [3]
Diclofenac < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Gabapentin < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Hydrogen carbonate 231 mg/l — — Mean · Source [2]
Iomeprol < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
Iopamidol < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Iopromide < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Magnesium 7 mg/l — — Mean · Source [2]
Metformin < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Metoprolol < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Oxipurinol < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Oxygen 10,3 mg/l — — Mean · Source [2]
Pentoxifylline < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Phenazone < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Phosphate < 0,05 mg/l
below limit of quantification
— — Mean · Source [2]
Potassium 1,5 mg/l — — Mean · Source [2]
Primidone < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Propyphenazone < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Silicate / silicic acid 10 mg/l — — Mean · Source [2]
Sotalol < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Sulfamethoxazole < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Total hardness 12,53 °dH — — Mean · Source [2]
Trimethoprim < 0,1 µg/l
below limit of quantification
— — Mean · Source [3]
Valsartan < 0,05 µg/l
below limit of quantification
— — Mean · Source [3]
Valsartanic acid < 0,03 µg/l
below limit of quantification
— — Mean · Source [3]
Zinc < 10 µg/l
below limit of quantification
— — Mean · Source [2]

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.

Sources: [1] ahrensburg-f140668erd.html · retrieved on 25/07/2026 [2] ahrensburg-f140668era.html · 29.01.2026 · retrieved on 25/07/2026 [3] ahrensburg-f140668erb.html · 29.01.2026 · retrieved on 25/07/2026 [4] ahrensburg-f140668erf.html · 29.01.2026 · retrieved on 25/07/2026 [5] ahrensburg-f140668ere.html · retrieved on 25/07/2026 [6] ahrensburg-f140668erc.html · 29.01.2026 · retrieved on 25/07/2026

Frequent questions about postcode 22927

How hard is the water in Postcode 22927?
HAMBURG WASSER (Hamburger Wasserwerke GmbH) publishes a total hardness of 12.5 °dH for the supply zone Großhansdorf (hardness range medium). 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: 29.01.2026, retrieved on 25/07/2026.
How much nitrate is in the drinking water in Postcode 22927?
HAMBURG WASSER (Hamburger Wasserwerke GmbH) publishes a nitrate value of 1,8 mg/l for the supply zone Großhansdorf. The statutory parametric value is 50 mg/l; the measured value represents 4 % of the parametric value. Basis: 29.01.2026, retrieved on 25/07/2026.
Are PFAS detectable in the drinking water in Postcode 22927?
HAMBURG WASSER (Hamburger Wasserwerke GmbH) publishes for the supply zone Großhansdorf a sum value PFAS-20 of 0 µg/l. The statutory parametric value is 0.1 µg/l; the measured value represents 0 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: 29.01.2026, retrieved on 25/07/2026.
Who supplies the drinking water in Postcode 22927?
HAMBURG WASSER (Hamburger Wasserwerke GmbH). The values shown here come from the supply zone Großhansdorf 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.