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Drinking water in 99423

For this postcode WZV Weimar publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 3 underneath.

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.

Weimar / GWV Weimar Stadt (Mischwasser)

WZV Weimar

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

Key values Weimar / GWV Weimar Stadt (Mischwasser)
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml — Single value
Show all recorded parameters (11 — most recent value per parameter)

Microbiology (2)

Microbiology – Weimar / GWV Weimar Stadt (Mischwasser)
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml — Single value
Intestinal enterococci 0 KBE/100 ml 0/100 ml — Single value

Indicator parameters (9)

Indicator parameters – Weimar / GWV Weimar Stadt (Mischwasser)
Parameter Value Parametric value Share of the parametric value Reference
Coliform bacteria 0 KBE/100 ml 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 <0,04 1/m
below limit of quantification
 0.5 m⁻¹ — Single value
Conductivity (25 °C) 446 µS/cm 2,790 µS/cm — Single value
Odour ohne für den Verbraucher annehmbar — Single value
Taste ohne für den Verbraucher annehmbar — Single value
Temperature 14,4 °C — — Single value
Turbidity 0,09 NTU 1 NTU — 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.wasserversorgung-weimar.de/wp-content/uploads/2026/07/Befund-2650144_bearb.pdf · 30.06.2026 · 18.06.2026 bis 30.06.2026 · retrieved on 11/07/2026
Show 3 more supply zones in this postcode

TWA Bad Berka

WZV Weimar

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

Water hardness
13 °dH
Hardness range medium
Key values TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 10,4 mg/l 50 mg/l
21 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Lead < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml — Single value
Sulphate 70,4 mg/l 250 mg/l
28 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Sodium 11,5 mg/l 200 mg/l
6 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)

* 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 (73 — most recent value per parameter)

Microbiology (2)

Microbiology – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml — Single value
Intestinal enterococci 0 Anz./100 ml 0/100 ml — Single value

Chemical parameters (38)

Chemical parameters – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane < 0,0001 mg/l
below limit of quantification
 3 µg/l
< 3 % *
Single value
Antimony < 0,001 mg/l
below limit of quantification
 5 µg/l
< 20 % *
Single value
Arsenic < 0,0005 mg/l
below limit of quantification
 10 µg/l
< 5 % *
Single value
Atrazine < 0,000010 mg/l
below limit of quantification
 — — Single value
Benzene < 0,00025 mg/l
below limit of quantification
 1 µg/l
< 25 % *
Single value
Benzo(a)pyrene < 0,000002 mg/l
below limit of quantification
 10 ng/l
< 20 % *
Single value
Benzo(b)fluoranthene < 0,000002 mg/l
below limit of quantification
 — — Single value
Benzo(ghi)perylene < 0,000002 mg/l
below limit of quantification
 — — Single value
Benzo(k)fluoranthene < 0,000002 mg/l
below limit of quantification
 — — Single value
Bisphenol A < 0,0001 mg/l
below limit of quantification
 2.5 µg/l
< 4 % *
Single value
Boron 0,021 mg/l 1 mg/l
2 %
Single value
Bromate < 0,003 mg/l
below limit of quantification
 10 µg/l
< 30 % *
Single value
Bromodichloromethane < 0,0002 mg/l
below limit of quantification
 — — Single value
Cadmium < 0,0005 mg/l
below limit of quantification
 3 µg/l
< 17 % *
Single value
Chlorate < 0,02 mg/l
below limit of quantification
 70 µg/l
< 29 % *
Single value
Chlorite < 0,04 mg/l
below limit of quantification
 0.2 mg/l
< 20 % *
Single value
Chromium < 0,0005 mg/l
below limit of quantification
 25 µg/l
< 2 % *
Single value
Copper 0,0023 mg/l 2 mg/l
0.1 %
Single value
Cyanide < 0,005 mg/l
below limit of quantification
 50 µg/l
< 10 % *
Single value
Dibromochloromethane < 0,0001 mg/l
below limit of quantification
 — — Single value
Fluoride 0,13 mg/l 1.5 mg/l
9 %
Single value
Indeno(1,2,3-cd)pyrene < 0,000002 mg/l
below limit of quantification
 — — Single value
Lead < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Mercury < 0,0001 mg/l
below limit of quantification
 1 µg/l
< 10 % *
Single value
Metazachlor < 0,000020 mg/l
below limit of quantification
 — — Single value
Metolachlor < 0,000010 mg/l
below limit of quantification
 — — Single value
Nickel < 0,001 mg/l
below limit of quantification
 20 µg/l
< 5 % *
Single value
Nitrate 10,4 mg/l 50 mg/l
21 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Nitrite < 0,005 mg/l
below limit of quantification
 0.5 mg/l
< 1 % *
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Selenium < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Simazine < 0,000010 mg/l
below limit of quantification
 — — Single value
Terbuthylazine < 0,000025 mg/l
below limit of quantification
 — — Single value
Tetrachloroethene < 0,0001 mg/l
below limit of quantification
 — — Single value
Tribromomethane (bromoform) < 0,0005 mg/l
below limit of quantification
 — — Single value
Trichloroethene < 0,0001 mg/l
below limit of quantification
 — — Single value
Trichloromethane (chloroform) < 0,0001 mg/l
below limit of quantification
 — — Single value
Trihalomethanes — Total < 0,0005 mg/l
below limit of quantification
 50 µg/l
< 1 % *
Single value
Uranium 0,001 mg/l 10 µg/l
10 %
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 (19)

Indicator parameters – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,005 mg/l
below limit of quantification
 0.2 mg/l
< 3 % *
Single value
Ammonium < 0,01 mg/l
below limit of quantification
 0.5 mg/l
< 2 % *
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Calcite dissolution capacity -7,1 mg/l 5 mg/l CaCO3 — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Chloride 20,8 mg/l 250 mg/l
8 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Coliform bacteria 0 Anz./100 ml 0/100 ml — Single value
Colony count 22 °C 0 Anz./ml ohne anormale Veränderung — Single value
Colony count 36 °C 0 Anz./ml ohne anormale Veränderung — Single value
Colour < 0,04 1/m
below limit of quantification
 0.5 m⁻¹ — Single value
Conductivity (25 °C) 485 µS/cm 2,790 µS/cm — Single value
Iron < 0,005 mg/l
below limit of quantification
 0.2 mg/l
< 3 % *
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Manganese < 0,001 mg/l
below limit of quantification
 50 µg/l
< 2 % *
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Odour ohne für den Verbraucher annehmbar — Single value
Oxidisability 0,2 mg/l O2 5 mg/l O2 — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
pH 7,94 ph - Einh. 6,5–9,5 — Single value
Sodium 11,5 mg/l 200 mg/l
6 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Sulphate 70,4 mg/l 250 mg/l
28 %
Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Taste ohne für den Verbraucher annehmbar — Single value
Temperature 9,3 °C — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Turbidity 0,06 NTU 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.

Radiology (3)

Radiology – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Indicative dose 0,012 mSv/a 0.1 mSv/a — Single value
Radon-222 < 0,5 Bq/l
below limit of quantification
 100 Bq/l — Single value
Tritium 0,31 Bq/l 100 Bq/l — Single value

Treatment substances (1)

Treatment substances – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Free chlorine 0,21 mg/l — — Single value

Further parameters (10)

Further parameters – TWA Bad Berka
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,15 mmol/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Calcium 58,9 mg/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Carbonate hardness 8,8 °dH — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Hydrogen carbonate 188 mg/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Magnesium 20,5 mg/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Phosphate k. A. mg/l
not determined
 — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Potassium 4,5 mg/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Silicate / silicic acid 14,9 mg/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Sum of alkaline earth metals 2,31 mmol/l — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)
Total hardness 13,0 °dH — — Single value · Korrosionschemische Untersuchung nach DIN 50930 (Probe vom 02.02.2026)

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: weimar-637c4383r.html · Aktualisierungsstand: Juli 2026 · retrieved on 11/07/2026

Talsperrenwasser

WZV Weimar

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

Water hardness
3.5 °dH
Hardness range 0,619
Key values Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS < 0,00003 mg/l
below limit of quantification
 0.1 µg/l
< 30 % *
Single value
Nitrate 3,9 mg/l 50 mg/l
8 %
Single value
Lead < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml — Single value
Sulphate 10,7 mg/l 250 mg/l
4 %
Single value
Sodium 16,2 mg/l 200 mg/l
8 %
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 (63 — most recent value per parameter)

Microbiology (2)

Microbiology – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anz./100 ml 0/100 ml — Single value
Intestinal enterococci 0 Anz./100 ml 0/100 ml — Single value

Chemical parameters (27)

Chemical parameters – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
1,1,1-Trichloroethane < 0,0001 mg/l
below limit of quantification
 — — Single value
1,2-dichloroethane < 0,0001 mg/l
below limit of quantification
 3 µg/l
< 3 % *
Single value
Arsenic < 0,0005 mg/l
below limit of quantification
 10 µg/l
< 5 % *
Single value
Benzene < 0,0001 mg/l
below limit of quantification
 1 µg/l
< 10 % *
Single value
Benzo(a)pyrene < 0,000002 mg/l
below limit of quantification
 10 ng/l
< 20 % *
Single value
Benzo(b)fluoranthene < 0,000002 mg/l
below limit of quantification
 — — Single value
Benzo(ghi)perylene < 0,000002 mg/l
below limit of quantification
 — — Single value
Benzo(k)fluoranthene < 0,000002 mg/l
below limit of quantification
 — — Single value
Bisphenol A < 0,0001 mg/l
below limit of quantification
 2.5 µg/l
< 4 % *
Single value
Bromate < 0,003 mg/l
below limit of quantification
 10 µg/l
< 30 % *
Single value
Cadmium < 0,0005 mg/l
below limit of quantification
 3 µg/l
< 17 % *
Single value
Chromium < 0,0005 mg/l
below limit of quantification
 25 µg/l
< 2 % *
Single value
Copper < 0,001 mg/l
below limit of quantification
 2 mg/l
< < 0.1 % *
Single value
Dichloromethane < 0,0001 mg/l
below limit of quantification
 — — Single value
Fluoride 0,09 mg/l 1.5 mg/l
6 %
Single value
Indeno(1,2,3-cd)pyrene < 0,000002 mg/l
below limit of quantification
 — — Single value
Lead < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Mercury < 0,0001 mg/l
below limit of quantification
 1 µg/l
< 10 % *
Single value
Nickel < 0,001 mg/l
below limit of quantification
 20 µg/l
< 5 % *
Single value
Nitrate 3,9 mg/l 50 mg/l
8 %
Single value
Nitrite < 0,005 mg/l
below limit of quantification
 0.5 mg/l
< 1 % *
Single value
Selenium < 0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Single value
Tetrachloroethene < 0,0001 mg/l
below limit of quantification
 — — Single value
Tetrachloromethane < 0,0001 mg/l
below limit of quantification
 — — Single value
Trichloroethene < 0,0001 mg/l
below limit of quantification
 — — Single value
Uranium < 0,0005 mg/l
below limit of quantification
 10 µg/l
< 5 % *
Single value
Vinyl chloride < 0,0005 mg/l
below limit of quantification
 0.5 µg/l
< 100 % *
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 (2)

PFAS – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Sum of 4 PFAS n. b. mg/l
not determined
 — — Single value
Sum of PFAS < 0,00003 mg/l
below limit of quantification
 0.1 µg/l
< 30 % *
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 (19)

Indicator parameters – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,005 mg/l
below limit of quantification
 0.2 mg/l
< 3 % *
Single value
Ammonium 0,05 mg/l 0.5 mg/l
10 %
Single value
Calcite dissolution capacity -1,5 mg/l 5 mg/l CaCO3 — Single value
Chloride 12,7 mg/l 250 mg/l
5 %
Single value
Clostridium perfringens (including spores) 0 Anz./100 ml 0/100 ml — Single value
Coliform bacteria 0 Anz./100 ml 0/100 ml — Single value
Colony count 36 °C 0 Anz./ml ohne anormale Veränderung — Single value
Colour < 0,04 1/m
below limit of quantification
 0.5 m⁻¹ — Single value
Conductivity (25 °C) 189 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 < 0,001 mg/l
below limit of quantification
 50 µg/l
< 2 % *
Single value
Odour ohne für den Verbraucher annehmbar — Single value
pH 8,59 6,5–9,5 — Single value
Sodium 16,2 mg/l 200 mg/l
8 %
Single value
Sulphate 10,7 mg/l 250 mg/l
4 %
Single value
Taste ohne für den Verbraucher annehmbar — Single value
Temperature 8,3 °C — — Single value
Total organic carbon (TOC) 0,87 mg/l ohne anormale Veränderung — Single value
Turbidity 0,07 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.

Radiology (1)

Radiology – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 1,1 Bq/l 100 Bq/l — Single value

Treatment substances (1)

Treatment substances – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Chlorine dioxide 0,13 mg/l — — Single value

Further parameters (11)

Further parameters – Talsperrenwasser
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 1,36 mmol/l — — Single value
Base capacity to pH 8.2 0 mmol/l — — Single value
Calcium 23,0 mg/l — — Single value
Carbonate hardness 0,678 mmol/l — — Single value
Hardness range (WRMG) 0,619 mmol/l — — Single value
Magnesium 1,10 mg/l — — Single value
Potassium 3,6 mg/l — — Single value
Silicate / silicic acid 6,49 mg/l — — Single value
Sum of alkaline earth metals n.b. mmol/l
not determined
 — — Single value
Total hardness 3,5 °dH — — Single value
Zinc < 0,005 mg/l
below limit of quantification
 — — 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: weimar-d7afa735r.html · Januar 2026 · retrieved on 11/07/2026

GWV Weimar Stadt (Mischwasser), Entnahmestelle Döbereinerstr.20, Entnahmepunkt Keller, Hausanschluss, Entnahmeort Weimar

WZV Weimar

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

Water hardness
13.4 °dH
Hardness range medium
Key values GWV Weimar Stadt (Mischwasser), Entnahmestelle Döbereinerstr.20, Entnahmepunkt Keller, Hausanschluss, Entnahmeort Weimar
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml — Single value
Show all recorded parameters (12 — most recent value per parameter)

Microbiology (2)

Microbiology – GWV Weimar Stadt (Mischwasser), Entnahmestelle Döbereinerstr.20, Entnahmepunkt Keller, Hausanschluss, Entnahmeort Weimar
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 KBE/100 ml 0/100 ml — Single value
Intestinal enterococci 0 KBE/100 ml 0/100 ml — Single value

Indicator parameters (9)

Indicator parameters – GWV Weimar Stadt (Mischwasser), Entnahmestelle Döbereinerstr.20, Entnahmepunkt Keller, Hausanschluss, Entnahmeort Weimar
Parameter Value Parametric value Share of the parametric value Reference
Coliform bacteria 0 KBE/100 ml 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 <0,04 1/m
below limit of quantification
 0.5 m⁻¹ — Single value
Conductivity (25 °C) 508 µS/cm 2,790 µS/cm — Single value
Odour ohne für den Verbraucher annehmbar — Single value
Taste ohne für den Verbraucher annehmbar — Single value
Temperature 13,2 °C — — Single value
Turbidity 0,16 NTU 1 NTU — Single value

Further parameters (1)

Further parameters – GWV Weimar Stadt (Mischwasser), Entnahmestelle Döbereinerstr.20, Entnahmepunkt Keller, Hausanschluss, Entnahmeort Weimar
Parameter Value Parametric value Share of the parametric value Reference
Total hardness 13,4 °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.wasserversorgung-weimar.de/wp-content/uploads/2026/07/Befund-2650147_bearb.pdf · 30.06.2026 · 18.06.2026 bis 30.06.2026 · retrieved on 11/07/2026

Frequent questions about postcode 99423

Who supplies the drinking water in Postcode 99423?
WZV Weimar. The values shown here come from the supply zone Weimar / GWV Weimar Stadt (Mischwasser) 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.