Drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau

Q: How hard is the water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?

Marktgemeinde St. Martin im Mühlkreis publishes a total hardness of 9.3 °dH for the supply zone 4113, St. Martin, Gasthaus Ernst (hardness range medium). 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: 2025-09-22, retrieved on 08/08/2026.

Q: How much nitrate is in the drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?

Marktgemeinde St. Martin im Mühlkreis publishes a nitrate value of 8,7 mg/l for the supply zone 4113, St. Martin, Gasthaus Ernst. The statutory parametric value is 50 mg/l; the measured value represents 17 % of the parametric value. Basis: 2025-09-22, retrieved on 08/08/2026.

Q: Who supplies the drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?

Marktgemeinde St. Martin im Mühlkreis. The values shown here come from the supply zone 4113, St. Martin, Gasthaus Ernst 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.

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.

4113, St. Martin, Gasthaus Ernst

Marktgemeinde St. Martin im Mühlkreis

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

Water hardness

9.3 °dH

Hardness range medium

Key values 4113, St. Martin, Gasthaus Ernst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,7 mg/l	50 mg/l	17 %	Single value · 4113, St. Martin, Gasthaus Ernst
Sulphate	40,3 mg/l	250 mg/l	16 %	Single value · 4113, St. Martin, Gasthaus Ernst
Sodium	8,5 mg/l	200 mg/l	4 %	Single value · 4113, St. Martin, Gasthaus Ernst

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 4113, St. Martin, Gasthaus Ernst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,7 mg/l	50 mg/l	17 %	Single value · 4113, St. Martin, Gasthaus Ernst

Indicator parameters (5)

Indicator parameters – 4113, St. Martin, Gasthaus Ernst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11,2 mg/l	200 mg/l	6 %	Single value · 4113, St. Martin, Gasthaus Ernst
Conductivity (25 °C)	388 µS/cm	2,500 µS/cm	—	Single value · 4113, St. Martin, Gasthaus Ernst
pH	7,8	6,5–9,5	—	Single value · 4113, St. Martin, Gasthaus Ernst
Sodium	8,5 mg/l	200 mg/l	4 %	Single value · 4113, St. Martin, Gasthaus Ernst
Sulphate	40,3 mg/l	250 mg/l	16 %	Single value · 4113, St. Martin, Gasthaus Ernst

Further parameters (5)

Further parameters – 4113, St. Martin, Gasthaus Ernst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	54,3 mg/l	400 mg/l	14 %	Single value · 4113, St. Martin, Gasthaus Ernst
Carbonate hardness	6,7 °dH	—	—	Single value · 4113, St. Martin, Gasthaus Ernst
Magnesium	7,7 mg/l	150 mg/l	5 %	Single value · 4113, St. Martin, Gasthaus Ernst
Potassium	1,6 mg/l	50 mg/l	3 %	Single value · 4113, St. Martin, Gasthaus Ernst
Total hardness	9,3 °dH	—	—	Single value · 4113, St. Martin, Gasthaus Ernst

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.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=13321000&tx_abatrinkwdb_pi1_plz=4113&tx_abatrinkwdb_pi1_suche=1&cHash=ebb47c73bdc9db246a8fce9fae0689ee · 2025-09-22 · 2025-09-22 · retrieved on 08/08/2026

Postcodes in this zone: 4113

Show 3 more supply zones

4113, St. Martin, Shell-Tankstelle

Marktgemeinde St. Martin im Mühlkreis

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

Water hardness

9.3 °dH

Hardness range medium

Key values 4113, St. Martin, Shell-Tankstelle
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,7 mg/l	50 mg/l	17 %	Single value · 4113, St. Martin, Shell-Tankstelle
Sulphate	40,3 mg/l	250 mg/l	16 %	Single value · 4113, St. Martin, Shell-Tankstelle
Sodium	8,5 mg/l	200 mg/l	4 %	Single value · 4113, St. Martin, Shell-Tankstelle

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 4113, St. Martin, Shell-Tankstelle
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8,7 mg/l	50 mg/l	17 %	Single value · 4113, St. Martin, Shell-Tankstelle

Indicator parameters (5)

Indicator parameters – 4113, St. Martin, Shell-Tankstelle
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11,2 mg/l	200 mg/l	6 %	Single value · 4113, St. Martin, Shell-Tankstelle
Conductivity (25 °C)	382 µS/cm	2,500 µS/cm	—	Single value · 4113, St. Martin, Shell-Tankstelle
pH	7,6	6,5–9,5	—	Single value · 4113, St. Martin, Shell-Tankstelle
Sodium	8,5 mg/l	200 mg/l	4 %	Single value · 4113, St. Martin, Shell-Tankstelle
Sulphate	40,3 mg/l	250 mg/l	16 %	Single value · 4113, St. Martin, Shell-Tankstelle

Further parameters (5)

Further parameters – 4113, St. Martin, Shell-Tankstelle
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	54,3 mg/l	400 mg/l	14 %	Single value · 4113, St. Martin, Shell-Tankstelle
Carbonate hardness	6,7 °dH	—	—	Single value · 4113, St. Martin, Shell-Tankstelle
Magnesium	7,7 mg/l	150 mg/l	5 %	Single value · 4113, St. Martin, Shell-Tankstelle
Potassium	1,6 mg/l	50 mg/l	3 %	Single value · 4113, St. Martin, Shell-Tankstelle
Total hardness	9,3 °dH	—	—	Single value · 4113, St. Martin, Shell-Tankstelle

Postcodes in this zone: 4113

4113, St. Martin, Volksschule

Marktgemeinde St. Martin im Mühlkreis

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

Water hardness

9.3 °dH

Hardness range medium

Key values 4113, St. Martin, Volksschule
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12 mg/l	50 mg/l	24 %	Single value · 4113, St. Martin, Volksschule
Sulphate	35 mg/l	250 mg/l	14 %	Single value · 4113, St. Martin, Volksschule
Sodium	9,2 mg/l	200 mg/l	5 %	Single value · 4113, St. Martin, Volksschule

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 4113, St. Martin, Volksschule
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12 mg/l	50 mg/l	24 %	Single value · 4113, St. Martin, Volksschule

Indicator parameters (5)

Indicator parameters – 4113, St. Martin, Volksschule
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8,5 mg/l	200 mg/l	4 %	Single value · 4113, St. Martin, Volksschule
Conductivity (25 °C)	331 µS/cm	2,500 µS/cm	—	Single value · 4113, St. Martin, Volksschule
pH	7,6	6,5–9,5	—	Single value · 4113, St. Martin, Volksschule
Sodium	9,2 mg/l	200 mg/l	5 %	Single value · 4113, St. Martin, Volksschule
Sulphate	35 mg/l	250 mg/l	14 %	Single value · 4113, St. Martin, Volksschule

Further parameters (5)

Further parameters – 4113, St. Martin, Volksschule
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	57,4 mg/l	400 mg/l	14 %	Single value · 4113, St. Martin, Volksschule
Carbonate hardness	7,8 °dH	—	—	Single value · 4113, St. Martin, Volksschule
Magnesium	5,6 mg/l	150 mg/l	4 %	Single value · 4113, St. Martin, Volksschule
Potassium	1,6 mg/l	50 mg/l	3 %	Single value · 4113, St. Martin, Volksschule
Total hardness	9,3 °dH	—	—	Single value · 4113, St. Martin, Volksschule

Postcodes in this zone: 4113

4113, Unterhaag

WV FWV Mühlviertel

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 27/06/2023. 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

2.8 °dH

Hardness range soft

Key values 4113, Unterhaag
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,3 mg/l	50 mg/l	9 %	Single value · 4113, Unterhaag
Sulphate	2,3 mg/l	250 mg/l	0.9 %	Single value · 4113, Unterhaag
Sodium	2,4 mg/l	200 mg/l	1 %	Single value · 4113, Unterhaag

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 4113, Unterhaag
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,3 mg/l	50 mg/l	9 %	Single value · 4113, Unterhaag

Indicator parameters (5)

Indicator parameters – 4113, Unterhaag
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	3,4 mg/l	200 mg/l	2 %	Single value · 4113, Unterhaag
Conductivity (25 °C)	100 µS/cm	2,500 µS/cm	—	Single value · 4113, Unterhaag
pH	8,8	6,5–9,5	—	Single value · 4113, Unterhaag
Sodium	2,4 mg/l	200 mg/l	1 %	Single value · 4113, Unterhaag
Sulphate	2,3 mg/l	250 mg/l	0.9 %	Single value · 4113, Unterhaag

Further parameters (5)

Further parameters – 4113, Unterhaag
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	18,2 mg/l	400 mg/l	5 %	Single value · 4113, Unterhaag
Carbonate hardness	2,6 °dH	—	—	Single value · 4113, Unterhaag
Magnesium	1,1 mg/l	150 mg/l	0.7 %	Single value · 4113, Unterhaag
Potassium	1 mg/l	50 mg/l	2 %	Single value · 4113, Unterhaag
Total hardness	2,8 °dH	—	—	Single value · 4113, Unterhaag

Source: https://www.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=16111000&tx_abatrinkwdb_pi1_plz=4113&tx_abatrinkwdb_pi1_suche=1&cHash=22460ecff723ca1c55c75dec770d93fe · 2023-06-27 · 2023-06-27 · retrieved on 08/08/2026

Postcodes in this zone: 4113

Frequently asked questions about drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau

How hard is the water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?: Marktgemeinde St. Martin im Mühlkreis publishes a total hardness of 9.3 °dH for the supply zone 4113, St. Martin, Gasthaus Ernst (hardness range medium). 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: 2025-09-22, retrieved on 08/08/2026.
How much nitrate is in the drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?: Marktgemeinde St. Martin im Mühlkreis publishes a nitrate value of 8,7 mg/l for the supply zone 4113, St. Martin, Gasthaus Ernst. The statutory parametric value is 50 mg/l; the measured value represents 17 % of the parametric value. Basis: 2025-09-22, retrieved on 08/08/2026.
Who supplies the drinking water in Niederwaldkirchen, St. Martin im Mühlkreis, Feldkirchen an der Donau?: Marktgemeinde St. Martin im Mühlkreis. The values shown here come from the supply zone 4113, St. Martin, Gasthaus Ernst 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.