Who supplies the drinking water in Krefeld?

SWK ENERGIE GmbH. The values shown here come from the supply zone Gladbacher Straße 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.

Drinking water in Krefeld

4 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.

Gladbacher Straße

SWK ENERGIE GmbH

Assigned 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 31/12/2024. 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.

Key values Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Single value · Gladbacher Straße
Nitrate	6,4 [mg/l]	50 mg/l	—	Single value · Gladbacher Straße
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Single value · Gladbacher Straße
Sulphate	120 [mg/l]	250 mg/l	—	Single value · Gladbacher Straße
Sodium	36,8 [mg/l]	200 mg/l	—	Single value · Gladbacher Straße

Show all recorded parameters (64 — most recent value per parameter)

Microbiology (2)

Microbiology – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Single value · Gladbacher Straße
Intestinal enterococci	0 [100 ml-1]	0/100 ml	—	Single value · Gladbacher Straße

Chemical parameters (31)

Chemical parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<0,0005 [mg/l] below limit of quantification	3 µg/l	—	Single value · Gladbacher Straße
Acrylamide	<0,00003 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · Gladbacher Straße
Antimony	<0,0005 [mg/l] below limit of quantification	5 µg/l	—	Single value · Gladbacher Straße
Arsenic	<0,0004 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Benzene	<0,00003 [mg/l] below limit of quantification	1 µg/l	—	Single value · Gladbacher Straße
Benzo(a)pyrene	<0,000003 [mg/l] below limit of quantification	10 ng/l	—	Single value · Gladbacher Straße
Bisphenol A	<0,0001 [mg/l] below limit of quantification	2.5 µg/l	—	Single value · Gladbacher Straße
Boron	<0,05 [mg/l] below limit of quantification	1 mg/l	—	Single value · Gladbacher Straße
Bromate	<0,003 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Cadmium	<0,0003 [mg/l] below limit of quantification	3 µg/l	—	Single value · Gladbacher Straße
Chlorate	nicht erforderlich [mg/l] not determined	70 µg/l	—	Single value · Gladbacher Straße
Chlorite	nicht erforderlich [mg/l] not determined	0.2 mg/l	—	Single value · Gladbacher Straße
Chromium	<0,0005 [mg/l] below limit of quantification	25 µg/l	—	Single value · Gladbacher Straße
Copper	0,012 [mg/l]	2 mg/l	—	Single value · Gladbacher Straße
Cyanide	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Single value · Gladbacher Straße
Epichlorohydrin	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · Gladbacher Straße
Fluoride	<0,1 [mg/l] below limit of quantification	1.5 mg/l	—	Single value · Gladbacher Straße
Haloacetic acids (HAA)	nicht erforderlich [mg/l] not determined	—	—	Single value · Gladbacher Straße
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Mercury	<0,0001 [mg/l] below limit of quantification	1 µg/l	—	Single value · Gladbacher Straße
Microcystin-LR	nicht erforderlich [mg/l] not determined	—	—	Single value · Gladbacher Straße
Nickel	<0,001 [mg/l] below limit of quantification	20 µg/l	—	Single value · Gladbacher Straße
Nitrate	6,4 [mg/l]	50 mg/l	—	Single value · Gladbacher Straße
Nitrite	<0,01 [mg/l] below limit of quantification	0.5 mg/l	—	Single value · Gladbacher Straße
Pesticides	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · Gladbacher Straße
Pesticides — Total	<0,0005 [mg/l] below limit of quantification	0.5 µg/l	—	Single value · Gladbacher Straße
Polycyclic aromatic hydrocarbons	<0,00001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · Gladbacher Straße
Selenium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Trihalomethanes — Total	<0,0002 [mg/l] below limit of quantification	50 µg/l	—	Single value · Gladbacher Straße
Uranium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Single value · Gladbacher Straße
Vinyl chloride	<0,00015 [mg/l] below limit of quantification	0.5 µg/l	—	Single value · Gladbacher Straße

PFAS (2)

PFAS – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of 4 PFAS	gültig ab Jan. 2028 [mg/l] not determined	—	—	Single value · Gladbacher Straße
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Single value · Gladbacher Straße

Indicator parameters (19)

Indicator parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Single value · Gladbacher Straße
Ammonium	<0,05 [mg/l] below limit of quantification	0.5 mg/l	—	Single value · Gladbacher Straße
Calcite dissolution capacity	-0,62 [mg/l CaCO3]	5 mg/l CaCO3	—	Single value · Gladbacher Straße
Chloride	53,8 [mg/l]	250 mg/l	—	Single value · Gladbacher Straße
Coliform bacteria	0 [100 ml-1]	0/100 ml	—	Single value · Gladbacher Straße
Colony count 22 °C	0 –	ohne anormale Veränderung	—	Single value · Gladbacher Straße
Colony count 36 °C	0 –	ohne anormale Veränderung	—	Single value · Gladbacher Straße
Colour	<0,1 [m-1] below limit of quantification	0.5 m⁻¹	—	Single value · Gladbacher Straße
Conductivity (25 °C)	650 [μS/cm bei 25°C]	2,790 µS/cm	—	Single value · Gladbacher Straße
Iron	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Single value · Gladbacher Straße
Manganese	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Single value · Gladbacher Straße
Odour	ohne –	für den Verbraucher annehmbar	—	Single value · Gladbacher Straße
pH	7,72 –	6,5–9,5	—	Single value · Gladbacher Straße
Sodium	36,8 [mg/l]	200 mg/l	—	Single value · Gladbacher Straße
Sulphate	120 [mg/l]	250 mg/l	—	Single value · Gladbacher Straße
Taste	ohne –	für den Verbraucher annehmbar	—	Single value · Gladbacher Straße
Temperature	11,9 [°C]	—	—	Single value · Gladbacher Straße
Total organic carbon (TOC)	0,93 [mg/l]	ohne anormale Veränderung	—	Single value · Gladbacher Straße
Turbidity	<0,1 [NTU] below limit of quantification	1 NTU	—	Single value · Gladbacher Straße

Further parameters (10)

Further parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,59 [mmol/l]	—	—	Single value · Gladbacher Straße
Base capacity to pH 8.2	0,13 [mmol/l]	—	—	Single value · Gladbacher Straße
Calcium	65,6 [mg/l]	—	—	Single value · Gladbacher Straße
Carbonate hardness	2,59 [mmol/l]	—	—	Single value · Gladbacher Straße
Hydrogen carbonate	158 [mg/l]	—	—	Single value · Gladbacher Straße
Magnesium	17,9 [mg/l]	—	—	Single value · Gladbacher Straße
Oxygen	10 [mg/l]	—	—	Single value · Gladbacher Straße
Potassium	2,97 [mg/l]	—	—	Single value · Gladbacher Straße
Silicate / silicic acid	7,36 [mg/l]	—	—	Single value · Gladbacher Straße
Total hardness	2,4 [mmol/l]	—	—	Single value · Gladbacher Straße

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://cdn.swk.de/assets/download/NGN%20Trinkwasser%20Analyse%202024.pdf · Jahresdurchschnittsanalysedaten 2024 · retrieved on 11/07/2026

Postcodes in this zone: 47798 , 47799 , 47800 , 47802 , 47803 , 47804 , 47805 , 47807 , 47809 , 47829 , 47839

Show 3 more supply zones

Gladbacher Straße

NGN Netzgesellschaft Niederrhein mbH

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

Key values Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Mean · Gladbacher Straße
Nitrate	6,4 [mg/l]	50 mg/l	—	Mean · Gladbacher Straße
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Mean · Gladbacher Straße
Sulphate	120 [mg/l]	250 mg/l	—	Mean · Gladbacher Straße
Sodium	36,8 [mg/l]	200 mg/l	—	Mean · Gladbacher Straße

Show all recorded parameters (64 — most recent value per parameter)

Microbiology (2)

Microbiology – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Mean · Gladbacher Straße
Intestinal enterococci	0 [100 ml-1]	0/100 ml	—	Mean · Gladbacher Straße

Chemical parameters (31)

Chemical parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<0,0005 [mg/l] below limit of quantification	3 µg/l	—	Mean · Gladbacher Straße
Acrylamide	<0,00003 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · Gladbacher Straße
Antimony	<0,0005 [mg/l] below limit of quantification	5 µg/l	—	Mean · Gladbacher Straße
Arsenic	<0,0004 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Benzene	<0,00003 [mg/l] below limit of quantification	1 µg/l	—	Mean · Gladbacher Straße
Benzo(a)pyrene	<0,000003 [mg/l] below limit of quantification	10 ng/l	—	Mean · Gladbacher Straße
Bisphenol A	<0,0001 [mg/l] below limit of quantification	2.5 µg/l	—	Mean · Gladbacher Straße
Boron	<0,05 [mg/l] below limit of quantification	1 mg/l	—	Mean · Gladbacher Straße
Bromate	<0,003 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Cadmium	<0,0003 [mg/l] below limit of quantification	3 µg/l	—	Mean · Gladbacher Straße
Chlorate	nicht erforderlich [mg/l] not determined	70 µg/l	—	Mean · Gladbacher Straße
Chlorite	nicht erforderlich [mg/l] not determined	0.2 mg/l	—	Mean · Gladbacher Straße
Chromium	<0,0005 [mg/l] below limit of quantification	25 µg/l	—	Mean · Gladbacher Straße
Copper	0,012 [mg/l]	2 mg/l	—	Mean · Gladbacher Straße
Cyanide	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Mean · Gladbacher Straße
Epichlorohydrin	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · Gladbacher Straße
Fluoride	<0,1 [mg/l] below limit of quantification	1.5 mg/l	—	Mean · Gladbacher Straße
Haloacetic acids (HAA)	nicht erforderlich [mg/l] not determined	—	—	Mean · Gladbacher Straße
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Mercury	<0,0001 [mg/l] below limit of quantification	1 µg/l	—	Mean · Gladbacher Straße
Microcystin-LR	nicht erforderlich [mg/l] not determined	—	—	Mean · Gladbacher Straße
Nickel	<0,001 [mg/l] below limit of quantification	20 µg/l	—	Mean · Gladbacher Straße
Nitrate	6,4 [mg/l]	50 mg/l	—	Mean · Gladbacher Straße
Nitrite	<0,01 [mg/l] below limit of quantification	0.5 mg/l	—	Mean · Gladbacher Straße
Pesticides	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · Gladbacher Straße
Pesticides — Total	<0,0005 [mg/l] below limit of quantification	0.5 µg/l	—	Mean · Gladbacher Straße
Polycyclic aromatic hydrocarbons	<0,00001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · Gladbacher Straße
Selenium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Trihalomethanes — Total	<0,0002 [mg/l] below limit of quantification	50 µg/l	—	Mean · Gladbacher Straße
Uranium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Mean · Gladbacher Straße
Vinyl chloride	<0,00015 [mg/l] below limit of quantification	0.5 µg/l	—	Mean · Gladbacher Straße

PFAS (2)

PFAS – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of 4 PFAS	gültig ab Jan. 2028 [mg/l] not determined	—	—	Mean · Gladbacher Straße
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Mean · Gladbacher Straße

Indicator parameters (19)

Indicator parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Mean · Gladbacher Straße
Ammonium	<0,05 [mg/l] below limit of quantification	0.5 mg/l	—	Mean · Gladbacher Straße
Calcite dissolution capacity	-0,62 [mg/l CaCO3]	5 mg/l CaCO3	—	Mean · Gladbacher Straße
Chloride	53,8 [mg/l]	250 mg/l	—	Mean · Gladbacher Straße
Coliform bacteria	0 [100 ml-1]	0/100 ml	—	Mean · Gladbacher Straße
Colony count 22 °C	0 –	ohne anormale Veränderung	—	Mean · Gladbacher Straße
Colony count 36 °C	0 –	ohne anormale Veränderung	—	Mean · Gladbacher Straße
Colour	<0,1 [m-1] below limit of quantification	0.5 m⁻¹	—	Mean · Gladbacher Straße
Conductivity (25 °C)	650 [μS/cm bei 25°C]	2,790 µS/cm	—	Mean · Gladbacher Straße
Iron	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Mean · Gladbacher Straße
Manganese	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Mean · Gladbacher Straße
Odour	ohne –	für den Verbraucher annehmbar	—	Mean · Gladbacher Straße
pH	7,72 –	6,5–9,5	—	Mean · Gladbacher Straße
Sodium	36,8 [mg/l]	200 mg/l	—	Mean · Gladbacher Straße
Sulphate	120 [mg/l]	250 mg/l	—	Mean · Gladbacher Straße
Taste	ohne –	für den Verbraucher annehmbar	—	Mean · Gladbacher Straße
Temperature	11,9 [°C]	—	—	Mean · Gladbacher Straße
Total organic carbon (TOC)	0,93 [mg/l]	ohne anormale Veränderung	—	Mean · Gladbacher Straße
Turbidity	<0,1 [NTU] below limit of quantification	1 NTU	—	Mean · Gladbacher Straße

Further parameters (10)

Further parameters – Gladbacher Straße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,59 [mmol/l]	—	—	Mean · Gladbacher Straße
Base capacity to pH 8.2	0,13 [mmol/l]	—	—	Mean · Gladbacher Straße
Calcium	65,6 [mg/l]	—	—	Mean · Gladbacher Straße
Carbonate hardness	2,59 [mmol/l]	—	—	Mean · Gladbacher Straße
Hydrogen carbonate	158 [mg/l]	—	—	Mean · Gladbacher Straße
Magnesium	17,9 [mg/l]	—	—	Mean · Gladbacher Straße
Oxygen	10 [mg/l]	—	—	Mean · Gladbacher Straße
Potassium	2,97 [mg/l]	—	—	Mean · Gladbacher Straße
Silicate / silicic acid	7,36 [mg/l]	—	—	Mean · Gladbacher Straße
Total hardness	2,4 [mmol/l]	—	—	Mean · Gladbacher Straße

Source: https://cdn.swk.de/assets/download/NGN%20Trinkwasser%20Analyse%202024.pdf · Jahresdurchschnittsanalysedaten 2024 · retrieved on 25/07/2026

Postcodes in this zone: 47798 , 47799 , 47800 , 47802 , 47803 , 47804 , 47805 , 47807 , 47809 , 47829 , 47839

In der Elt

SWK ENERGIE GmbH

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

Key values In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Single value · In der Elt
Nitrate	29,6 [mg/l]	50 mg/l	—	Single value · In der Elt
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Single value · In der Elt
Sulphate	84,1 [mg/l]	250 mg/l	—	Single value · In der Elt
Sodium	21,5 [mg/l]	200 mg/l	—	Single value · In der Elt

Show all recorded parameters (64 — most recent value per parameter)

Microbiology (2)

Microbiology – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Single value · In der Elt
Intestinal enterococci	0 [100 ml-1]	0/100 ml	—	Single value · In der Elt

Chemical parameters (31)

Chemical parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<0,0005 [mg/l] below limit of quantification	3 µg/l	—	Single value · In der Elt
Acrylamide	<0,00003 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · In der Elt
Antimony	<0,0005 [mg/l] below limit of quantification	5 µg/l	—	Single value · In der Elt
Arsenic	<0,0004 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Benzene	<0,00003 [mg/l] below limit of quantification	1 µg/l	—	Single value · In der Elt
Benzo(a)pyrene	<0,000003 [mg/l] below limit of quantification	10 ng/l	—	Single value · In der Elt
Bisphenol A	<0,0001 [mg/l] below limit of quantification	2.5 µg/l	—	Single value · In der Elt
Boron	<0,05 [mg/l] below limit of quantification	1 mg/l	—	Single value · In der Elt
Bromate	<0,003 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Cadmium	<0,0003 [mg/l] below limit of quantification	3 µg/l	—	Single value · In der Elt
Chlorate	nicht erforderlich [mg/l] not determined	70 µg/l	—	Single value · In der Elt
Chlorite	nicht erforderlich [mg/l] not determined	0.2 mg/l	—	Single value · In der Elt
Chromium	<0,0005 [mg/l] below limit of quantification	25 µg/l	—	Single value · In der Elt
Copper	0,022 [mg/l]	2 mg/l	—	Single value · In der Elt
Cyanide	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Single value · In der Elt
Epichlorohydrin	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · In der Elt
Fluoride	<0,1 [mg/l] below limit of quantification	1.5 mg/l	—	Single value · In der Elt
Haloacetic acids (HAA)	nicht erforderlich [mg/l] not determined	—	—	Single value · In der Elt
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Mercury	<0,0001 [mg/l] below limit of quantification	1 µg/l	—	Single value · In der Elt
Microcystin-LR	nicht erforderlich [mg/l] not determined	—	—	Single value · In der Elt
Nickel	<0,001 [mg/l] below limit of quantification	20 µg/l	—	Single value · In der Elt
Nitrate	29,6 [mg/l]	50 mg/l	—	Single value · In der Elt
Nitrite	<0,01 [mg/l] below limit of quantification	0.5 mg/l	—	Single value · In der Elt
Pesticides	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · In der Elt
Pesticides — Total	<0,0005 [mg/l] below limit of quantification	0.5 µg/l	—	Single value · In der Elt
Polycyclic aromatic hydrocarbons	<0,00001 [mg/l] below limit of quantification	0.1 µg/l	—	Single value · In der Elt
Selenium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Trihalomethanes — Total	<0,0002 [mg/l] below limit of quantification	50 µg/l	—	Single value · In der Elt
Uranium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Single value · In der Elt
Vinyl chloride	<0,00015 [mg/l] below limit of quantification	0.5 µg/l	—	Single value · In der Elt

PFAS (2)

PFAS – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of 4 PFAS	gültig ab Jan. 2028 [mg/l] not determined	—	—	Single value · In der Elt
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Single value · In der Elt

Indicator parameters (19)

Indicator parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Single value · In der Elt
Ammonium	<0,05 [mg/l] below limit of quantification	0.5 mg/l	—	Single value · In der Elt
Calcite dissolution capacity	2,04 [mg/l CaCO3]	5 mg/l CaCO3	—	Single value · In der Elt
Chloride	40,6 [mg/l]	250 mg/l	—	Single value · In der Elt
Coliform bacteria	0 [100 ml-1]	0/100 ml	—	Single value · In der Elt
Colony count 22 °C	0 –	ohne anormale Veränderung	—	Single value · In der Elt
Colony count 36 °C	0 –	ohne anormale Veränderung	—	Single value · In der Elt
Colour	<0,1 [m-1] below limit of quantification	0.5 m⁻¹	—	Single value · In der Elt
Conductivity (25 °C)	561 [μS/cm bei 25°C]	2,790 µS/cm	—	Single value · In der Elt
Iron	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Single value · In der Elt
Manganese	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Single value · In der Elt
Odour	ohne –	für den Verbraucher annehmbar	—	Single value · In der Elt
pH	7,62 –	6,5–9,5	—	Single value · In der Elt
Sodium	21,5 [mg/l]	200 mg/l	—	Single value · In der Elt
Sulphate	84,1 [mg/l]	250 mg/l	—	Single value · In der Elt
Taste	ohne –	für den Verbraucher annehmbar	—	Single value · In der Elt
Temperature	12,5 [°C]	—	—	Single value · In der Elt
Total organic carbon (TOC)	1,1 [mg/l]	ohne anormale Veränderung	—	Single value · In der Elt
Turbidity	<0,1 [NTU] below limit of quantification	1 NTU	—	Single value · In der Elt

Further parameters (10)

Further parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,29 [mmol/l]	—	—	Single value · In der Elt
Base capacity to pH 8.2	0,14 [mmol/l]	—	—	Single value · In der Elt
Calcium	68,8 [mg/l]	—	—	Single value · In der Elt
Carbonate hardness	2,29 [mmol/l]	—	—	Single value · In der Elt
Hydrogen carbonate	140 [mg/l]	—	—	Single value · In der Elt
Magnesium	12,6 [mg/l]	—	—	Single value · In der Elt
Oxygen	9,8 [mg/l]	—	—	Single value · In der Elt
Potassium	4,03 [mg/l]	—	—	Single value · In der Elt
Silicate / silicic acid	6,7 [mg/l]	—	—	Single value · In der Elt
Total hardness	2,25 [mmol/l]	—	—	Single value · In der Elt

Source: https://cdn.swk.de/assets/download/NGN%20Trinkwasser%20Analyse%202024.pdf · Jahresdurchschnittsanalysedaten 2024 · retrieved on 11/07/2026

Postcodes in this zone: 47798 , 47799 , 47800 , 47802 , 47803 , 47804 , 47805 , 47807 , 47809 , 47829 , 47839

In der Elt

NGN Netzgesellschaft Niederrhein mbH

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

Key values In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Mean · In der Elt
Nitrate	29,6 [mg/l]	50 mg/l	—	Mean · In der Elt
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Mean · In der Elt
Sulphate	84,1 [mg/l]	250 mg/l	—	Mean · In der Elt
Sodium	21,5 [mg/l]	200 mg/l	—	Mean · In der Elt

Show all recorded parameters (64 — most recent value per parameter)

Microbiology (2)

Microbiology – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 [100 ml-1]	0/100 ml	—	Mean · In der Elt
Intestinal enterococci	0 [100 ml-1]	0/100 ml	—	Mean · In der Elt

Chemical parameters (31)

Chemical parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<0,0005 [mg/l] below limit of quantification	3 µg/l	—	Mean · In der Elt
Acrylamide	<0,00003 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · In der Elt
Antimony	<0,0005 [mg/l] below limit of quantification	5 µg/l	—	Mean · In der Elt
Arsenic	<0,0004 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Benzene	<0,00003 [mg/l] below limit of quantification	1 µg/l	—	Mean · In der Elt
Benzo(a)pyrene	<0,000003 [mg/l] below limit of quantification	10 ng/l	—	Mean · In der Elt
Bisphenol A	<0,0001 [mg/l] below limit of quantification	2.5 µg/l	—	Mean · In der Elt
Boron	<0,05 [mg/l] below limit of quantification	1 mg/l	—	Mean · In der Elt
Bromate	<0,003 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Cadmium	<0,0003 [mg/l] below limit of quantification	3 µg/l	—	Mean · In der Elt
Chlorate	nicht erforderlich [mg/l] not determined	70 µg/l	—	Mean · In der Elt
Chlorite	nicht erforderlich [mg/l] not determined	0.2 mg/l	—	Mean · In der Elt
Chromium	<0,0005 [mg/l] below limit of quantification	25 µg/l	—	Mean · In der Elt
Copper	0,022 [mg/l]	2 mg/l	—	Mean · In der Elt
Cyanide	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Mean · In der Elt
Epichlorohydrin	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · In der Elt
Fluoride	<0,1 [mg/l] below limit of quantification	1.5 mg/l	—	Mean · In der Elt
Haloacetic acids (HAA)	nicht erforderlich [mg/l] not determined	—	—	Mean · In der Elt
Lead	<0,0005 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Mercury	<0,0001 [mg/l] below limit of quantification	1 µg/l	—	Mean · In der Elt
Microcystin-LR	nicht erforderlich [mg/l] not determined	—	—	Mean · In der Elt
Nickel	<0,001 [mg/l] below limit of quantification	20 µg/l	—	Mean · In der Elt
Nitrate	29,6 [mg/l]	50 mg/l	—	Mean · In der Elt
Nitrite	<0,01 [mg/l] below limit of quantification	0.5 mg/l	—	Mean · In der Elt
Pesticides	<0,0001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · In der Elt
Pesticides — Total	<0,0005 [mg/l] below limit of quantification	0.5 µg/l	—	Mean · In der Elt
Polycyclic aromatic hydrocarbons	<0,00001 [mg/l] below limit of quantification	0.1 µg/l	—	Mean · In der Elt
Selenium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Trihalomethanes — Total	<0,0002 [mg/l] below limit of quantification	50 µg/l	—	Mean · In der Elt
Uranium	<0,001 [mg/l] below limit of quantification	10 µg/l	—	Mean · In der Elt
Vinyl chloride	<0,00015 [mg/l] below limit of quantification	0.5 µg/l	—	Mean · In der Elt

PFAS (2)

PFAS – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of 4 PFAS	gültig ab Jan. 2028 [mg/l] not determined	—	—	Mean · In der Elt
Sum of PFAS	gültig ab Jan. 2026 [mg/l] not determined	—	—	Mean · In der Elt

Indicator parameters (19)

Indicator parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Mean · In der Elt
Ammonium	<0,05 [mg/l] below limit of quantification	0.5 mg/l	—	Mean · In der Elt
Calcite dissolution capacity	2,04 [mg/l CaCO3]	5 mg/l CaCO3	—	Mean · In der Elt
Chloride	40,6 [mg/l]	250 mg/l	—	Mean · In der Elt
Coliform bacteria	0 [100 ml-1]	0/100 ml	—	Mean · In der Elt
Colony count 22 °C	0 –	ohne anormale Veränderung	—	Mean · In der Elt
Colony count 36 °C	0 –	ohne anormale Veränderung	—	Mean · In der Elt
Colour	<0,1 [m-1] below limit of quantification	0.5 m⁻¹	—	Mean · In der Elt
Conductivity (25 °C)	561 [μS/cm bei 25°C]	2,790 µS/cm	—	Mean · In der Elt
Iron	<0,01 [mg/l] below limit of quantification	0.2 mg/l	—	Mean · In der Elt
Manganese	<0,005 [mg/l] below limit of quantification	50 µg/l	—	Mean · In der Elt
Odour	ohne –	für den Verbraucher annehmbar	—	Mean · In der Elt
pH	7,62 –	6,5–9,5	—	Mean · In der Elt
Sodium	21,5 [mg/l]	200 mg/l	—	Mean · In der Elt
Sulphate	84,1 [mg/l]	250 mg/l	—	Mean · In der Elt
Taste	ohne –	für den Verbraucher annehmbar	—	Mean · In der Elt
Temperature	12,5 [°C]	—	—	Mean · In der Elt
Total organic carbon (TOC)	1,1 [mg/l]	ohne anormale Veränderung	—	Mean · In der Elt
Turbidity	<0,1 [NTU] below limit of quantification	1 NTU	—	Mean · In der Elt

Further parameters (10)

Further parameters – In der Elt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,29 [mmol/l]	—	—	Mean · In der Elt
Base capacity to pH 8.2	0,14 [mmol/l]	—	—	Mean · In der Elt
Calcium	68,8 [mg/l]	—	—	Mean · In der Elt
Carbonate hardness	2,29 [mmol/l]	—	—	Mean · In der Elt
Hydrogen carbonate	140 [mg/l]	—	—	Mean · In der Elt
Magnesium	12,6 [mg/l]	—	—	Mean · In der Elt
Oxygen	9,8 [mg/l]	—	—	Mean · In der Elt
Potassium	4,03 [mg/l]	—	—	Mean · In der Elt
Silicate / silicic acid	6,7 [mg/l]	—	—	Mean · In der Elt
Total hardness	2,25 [mmol/l]	—	—	Mean · In der Elt

Source: https://cdn.swk.de/assets/download/NGN%20Trinkwasser%20Analyse%202024.pdf · Jahresdurchschnittsanalysedaten 2024 · retrieved on 25/07/2026

Postcodes in this zone: 47798 , 47799 , 47800 , 47802 , 47803 , 47804 , 47805 , 47807 , 47809 , 47829 , 47839

Frequently asked questions about drinking water in Krefeld

Who supplies the drinking water in Krefeld?: SWK ENERGIE GmbH. The values shown here come from the supply zone Gladbacher Straße 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.