Who supplies the drinking water in Postcode 78234?

Stadtwerke Engen. The values shown here come from the supply zone Biesendorf (Trinkwasserenthärtung) 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 78234

One supply zone, water supplier: Stadtwerke Engen.

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.

Biesendorf (Trinkwasserenthärtung)

Stadtwerke Engen

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

No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.

No core values are available for this zone yet.

Show all recorded parameters (3 — most recent value per parameter)

Indicator parameters (2)

Indicator parameters – Biesendorf (Trinkwasserenthärtung)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Conductivity (25 °C)	286 µS/cm	2,790 µS/cm	—	Single value · Biesendorf (Trinkwasserenthärtung)
pH	7,9	6,5–9,5	—	Single value · Biesendorf (Trinkwasserenthärtung)

Treatment substances (1)

Treatment substances – Biesendorf (Trinkwasserenthärtung)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Free chlorine	0,12 mg/L	—	—	Single value · Biesendorf (Trinkwasserenthärtung)

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-engen.de/produkte/wasser/ · retrieved on 11/08/2026

Frequent questions about postcode 78234

Who supplies the drinking water in Postcode 78234?: Stadtwerke Engen. The values shown here come from the supply zone Biesendorf (Trinkwasserenthärtung) 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.