How much nitrate is in the drinking water in Postcode 94405?

Stadtwerke Landau a.d. Isar publishes a nitrate value of 1,68 mg/l for the supply zone landau-a-d-isar gesamt. The statutory parametric value is 50 mg/l; the measured value represents 3 % of the parametric value. Basis: 02.09.2025, retrieved on 11/07/2026.

Who supplies the drinking water in Postcode 94405?

Stadtwerke Landau a.d. Isar. The values shown here come from the supply zone landau-a-d-isar gesamt 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 94405

One supply zone, water supplier: Stadtwerke Landau a.d. Isar.

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.

landau-a-d-isar gesamt

Stadtwerke Landau a.d. Isar

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

Key values landau-a-d-isar gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	1,68 mg/l	50 mg/l	3 %	Single value
Sulphate	9,483 mg/l	250 mg/l	4 %	Single value
Sodium	51,6 mg/l	200 mg/l	26 %	Single value

Show all recorded parameters (9 — most recent value per parameter)

Chemical parameters (2)

Chemical parameters – landau-a-d-isar gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	0,24 mg/l	1.5 mg/l	16 %	Single value
Nitrate	1,68 mg/l	50 mg/l	3 %	Single value

Indicator parameters (4)

Indicator parameters – landau-a-d-isar gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	5,847 mg/l	250 mg/l	2 %	Single value
pH	7,6 mg/l	6,5–9,5	—	Single value
Sodium	51,6 mg/l	200 mg/l	26 %	Single value
Sulphate	9,483 mg/l	250 mg/l	4 %	Single value

Further parameters (3)

Further parameters – landau-a-d-isar gesamt
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	46,0 mg/l	—	—	Single value
Magnesium	17,6 mg/l	—	—	Single value
Potassium	2,07 mg/l	—	—	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.swlandau.de/wasser/trinkwasseranalysen/wasserhaerte-und-aktuelle-trinkwasseranalyse · 02.09.2025 · retrieved on 11/07/2026

Frequent questions about postcode 94405

How much nitrate is in the drinking water in Postcode 94405?: Stadtwerke Landau a.d. Isar publishes a nitrate value of 1,68 mg/l for the supply zone landau-a-d-isar gesamt. The statutory parametric value is 50 mg/l; the measured value represents 3 % of the parametric value. Basis: 02.09.2025, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 94405?: Stadtwerke Landau a.d. Isar. The values shown here come from the supply zone landau-a-d-isar gesamt 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.