How hard is the water in Postcode 74423?

NOW – Zweckverband Wasserversorgung Nordostwürttemberg publishes a total hardness of 13.3 °dH for the supply zone Mischwasser HB Fronrot (hardness range mittel (2)). 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: Publication by the water supplier, retrieved on 08/08/2026.

How much nitrate is in the drinking water in Postcode 74423?

NOW – Zweckverband Wasserversorgung Nordostwürttemberg publishes a nitrate value of 27,2 mg/L for the supply zone Mischwasser HB Fronrot. The statutory parametric value is 50 mg/l; the measured value represents 54 % of the parametric value. Basis: Publication by the water supplier, retrieved on 08/08/2026.

Who supplies the drinking water in Postcode 74423?

NOW – Zweckverband Wasserversorgung Nordostwürttemberg. The values shown here come from the supply zone Mischwasser HB Fronrot 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 74423

One supply zone, water supplier: NOW – Zweckverband Wasserversorgung Nordostwürttemberg.

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.

Mischwasser HB Fronrot

NOW – Zweckverband Wasserversorgung Nordostwürttemberg

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.

Water hardness

13.3 °dH

Hardness range mittel (2)

Key values Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	< 0,00005 mg/L below limit of quantification	—	—	Mean
Nitrate	27,2 mg/L	50 mg/l	54 %	Mean
Lead	< 0,001 mg/L below limit of quantification	10 µg/l	< 10 % *	Mean
Escherichia coli (E. coli)	0 Anz./100 mL	0/100 ml	—	Mean
Sulphate	23,8 mg/L	250 mg/l	10 %	Mean
Sodium	11,8 mg/L	200 mg/l	6 %	Mean

* 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 (56 — most recent value per parameter)

Microbiology (2)

Microbiology – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 Anz./100 mL	0/100 ml	—	Mean
Intestinal enterococci	0 Anz./100 mL	0/100 ml	—	Mean

Chemical parameters (27)

Chemical parameters – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	< 0,0005 mg/L below limit of quantification	3 µg/l	< 17 % *	Mean
Acrylamide	n.e. mg/L not determined	0.1 µg/l	—	Mean
Antimony	< 0,0005 mg/L below limit of quantification	5 µg/l	< 10 % *	Mean
Arsenic	< 0,001 mg/L below limit of quantification	10 µg/l	< 10 % *	Mean
Benzene	< 0,00010 mg/L below limit of quantification	1 µg/l	< 10 % *	Mean
Benzo(a)pyrene	< 0,000002 mg/L below limit of quantification	10 ng/l	< 20 % *	Mean
Bisphenol A	< 0,00005 mg/L below limit of quantification	2.5 µg/l	< 2 % *	Mean
Boron	0,02 mg/L	1 mg/l	2 %	Mean
Bromate	< 0,003 mg/L below limit of quantification	10 µg/l	< 30 % *	Mean
Cadmium	< 0,0003 mg/L below limit of quantification	3 µg/l	< 10 % *	Mean
Chlorate	n.e. mg/L not determined	70 µg/l	—	Mean
Chlorite	n.e. mg/L not determined	0.2 mg/l	—	Mean
Chromium	0,00050 mg/L	25 µg/l	2 %	Mean
Copper	0,005 mg/L	2 mg/l	0.3 %	Mean
Cyanide	< 0,0050 mg/L below limit of quantification	50 µg/l	< 10 % *	Mean
Epichlorohydrin	n.e. mg/L not determined	0.1 µg/l	—	Mean
Fluoride	0,07 mg/L	1.5 mg/l	5 %	Mean
Lead	< 0,001 mg/L below limit of quantification	10 µg/l	< 10 % *	Mean
Mercury	< 0,0001 mg/L below limit of quantification	1 µg/l	< 10 % *	Mean
Nickel	< 0,002 mg/L below limit of quantification	20 µg/l	< 10 % *	Mean
Nitrate	27,2 mg/L	50 mg/l	54 %	Mean
Nitrite	< 0,010 mg/L below limit of quantification	0.5 mg/l	< 2 % *	Mean
Selenium	< 0,0005 mg/L below limit of quantification	10 µg/l	< 5 % *	Mean
Tetrachloroethene and Trichloroethene (sum)	< 0,0002 mg/L below limit of quantification	10 µg/l	< 2 % *	Mean
Trihalomethanes — Total	< 0,0003 mg/L below limit of quantification	50 µg/l	< 0.6 % *	Mean
Uranium	0,00080 mg/L	10 µg/l	8 %	Mean
Vinyl chloride	< 0,0001 mg/L below limit of quantification	0.5 µg/l	< 20 % *	Mean

PFAS (2)

PFAS – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of 4 PFAS	n.n. µg/L not detectable	—	—	Mean
Sum of PFAS	< 0,00005 mg/L below limit of quantification	—	—	Mean

Indicator parameters (15)

Indicator parameters – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 0,02 mg/L below limit of quantification	0.2 mg/l	< 10 % *	Mean
Ammonium	0,02 mg/L	0.5 mg/l	4 %	Mean
Chloride	30,1 mg/L	250 mg/l	12 %	Mean
Clostridium perfringens (including spores)	0 Anz./100 mL	0/100 ml	—	Mean
Coliform bacteria	0 Anz./100 mL	0/100 ml	—	Mean
Conductivity (25 °C)	508 µS/cm	2,790 µS/cm	—	Mean
Iron	0,005 mg/L	0.2 mg/l	3 %	Mean
Manganese	< 0,005 mg/L below limit of quantification	50 µg/l	< 10 % *	Mean
Odour	1	für den Verbraucher annehmbar	—	Mean
Oxidisability	0,4 mg/L O2	5 mg/l O2	—	Mean
pH	7,58	6,5–9,5	—	Mean
Sodium	11,8 mg/L	200 mg/l	6 %	Mean
Sulphate	23,8 mg/L	250 mg/l	10 %	Mean
Taste	neutral	für den Verbraucher annehmbar	—	Mean
Total organic carbon (TOC)	0,9 mg/L	ohne anormale Veränderung	—	Mean

Radiology (2)

Radiology – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Indicative dose	n.d. mSv/Jahr not determined	0.1 mSv/a	—	Mean
Tritium	n.d. Bq/L not determined	100 Bq/l	—	Mean

Further parameters (8)

Further parameters – Mischwasser HB Fronrot
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	3,65 mol/m3	—	—	Mean
Calcium	77,6 mg/L	—	—	Mean
Carbonate hardness	10,1 °dH	—	—	Mean
Hardness range (WRMG)	mittel (2)	—	—	Mean
Magnesium	10,6 mg/L	—	—	Mean
Potassium	2,0 mg/L	—	—	Mean
Sum of alkaline earth metals	2,37 mol/m3	—	—	Mean
Total hardness	13,3 °dH	—	—	Mean

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.obersontheim.de/fileadmin/Dateien/Cross7/root/Startseite/Gemeinde/Ver-_und_Entsorgung/Wasserversorgung/Trinkwasseranalyse_Mischwasser_HB_Fronrot__Mittelwerte_2024_2025.pdf · Mittelwerte 2024/25 · retrieved on 08/08/2026

Frequent questions about postcode 74423

How hard is the water in Postcode 74423?: NOW – Zweckverband Wasserversorgung Nordostwürttemberg publishes a total hardness of 13.3 °dH for the supply zone Mischwasser HB Fronrot (hardness range mittel (2)). 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: Publication by the water supplier, retrieved on 08/08/2026.
How much nitrate is in the drinking water in Postcode 74423?: NOW – Zweckverband Wasserversorgung Nordostwürttemberg publishes a nitrate value of 27,2 mg/L for the supply zone Mischwasser HB Fronrot. The statutory parametric value is 50 mg/l; the measured value represents 54 % of the parametric value. Basis: Publication by the water supplier, retrieved on 08/08/2026.
Who supplies the drinking water in Postcode 74423?: NOW – Zweckverband Wasserversorgung Nordostwürttemberg. The values shown here come from the supply zone Mischwasser HB Fronrot 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.