How hard is the water in Postcode 8644?

Marktgemeinde St. Lorenzen im Mürztal publishes a total hardness of 9.2 °dH for the supply zone 8642, Volkschule St. Lorenzen Ortsnetz. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: 2023-10-23, retrieved on 08/08/2026.

How much nitrate is in the drinking water in Postcode 8644?

Marktgemeinde St. Lorenzen im Mürztal publishes a nitrate value of 3,9 mg/l for the supply zone 8642, Volkschule St. Lorenzen Ortsnetz. The statutory parametric value is 50 mg/l; the measured value represents 8 % of the parametric value. Basis: 2023-10-23, retrieved on 08/08/2026.

Who supplies the drinking water in Postcode 8644?

Marktgemeinde St. Lorenzen im Mürztal. The values shown here come from the supply zone 8642, Volkschule St. Lorenzen Ortsnetz 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 8644 (Austria)

For this postcode Marktgemeinde St. Lorenzen im Mürztal 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 1 underneath.

The values come from the Austrian drinking water database, to which water suppliers report voluntarily. In each case the highest value of the published range is given.

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.

8642, Volkschule St. Lorenzen Ortsnetz

Marktgemeinde St. Lorenzen im Mürztal

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 23/10/2023. 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

9.2 °dH

Key values 8642, Volkschule St. Lorenzen Ortsnetz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	3,9 mg/l	50 mg/l	8 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Sulphate	43,6 mg/l	250 mg/l	17 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Sodium	9 mg/l	200 mg/l	5 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz

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

Chemical parameters (1)

Chemical parameters – 8642, Volkschule St. Lorenzen Ortsnetz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	3,9 mg/l	50 mg/l	8 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz

Indicator parameters (5)

Indicator parameters – 8642, Volkschule St. Lorenzen Ortsnetz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8,1 mg/l	200 mg/l	4 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Conductivity (25 °C)	317 µS/cm	2,500 µS/cm	—	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
pH	7,8	6,5–9,5	—	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Sodium	9 mg/l	200 mg/l	5 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Sulphate	43,6 mg/l	250 mg/l	17 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz

Further parameters (5)

Further parameters – 8642, Volkschule St. Lorenzen Ortsnetz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	45,6 mg/l	400 mg/l	11 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Carbonate hardness	6,9 °dH	—	—	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Magnesium	12,4 mg/l	150 mg/l	8 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Potassium	2,7 mg/l	50 mg/l	5 %	Single value · 8642, Volkschule St. Lorenzen Ortsnetz
Total hardness	9,2 °dH	—	—	Single value · 8642, Volkschule St. Lorenzen Ortsnetz

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=100018087&tx_abatrinkwdb_pi1_plz=8642&tx_abatrinkwdb_pi1_suche=1&cHash=4befb75b1967fe37e755716fa4a02e0c · 2023-10-23 · 2023-10-23 · retrieved on 08/08/2026

Show 1 more supply zone in this postcode

8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße

Marktgemeinde St. Lorenzen im Mürztal

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 24/05/2023. 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

11.4 °dH

Key values 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,5 mg/l	50 mg/l	9 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Sulphate	42,4 mg/l	250 mg/l	17 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Sodium	4,5 mg/l	200 mg/l	2 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße

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

Chemical parameters (1)

Chemical parameters – 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4,5 mg/l	50 mg/l	9 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße

Indicator parameters (5)

Indicator parameters – 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	2,6 mg/l	200 mg/l	1 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Conductivity (25 °C)	373 µS/cm	2,500 µS/cm	—	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
pH	7,8	6,5–9,5	—	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Sodium	4,5 mg/l	200 mg/l	2 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Sulphate	42,4 mg/l	250 mg/l	17 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße

Further parameters (5)

Further parameters – 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	58,2 mg/l	400 mg/l	15 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Carbonate hardness	8,9 °dH	—	—	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Magnesium	14,1 mg/l	150 mg/l	9 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Potassium	2,9 mg/l	50 mg/l	6 %	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße
Total hardness	11,4 °dH	—	—	Single value · 8644, HB Mürzgrabenbach nach UV, Mürzgrabenstraße

Source: https://www.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=100018087&tx_abatrinkwdb_pi1_plz=8644&tx_abatrinkwdb_pi1_suche=1&cHash=2e5737b32c3f19fa9a21f38a6983a303 · 2023-05-24 · 2023-05-24 · retrieved on 08/08/2026

Frequent questions about postcode 8644

How hard is the water in Postcode 8644?: Marktgemeinde St. Lorenzen im Mürztal publishes a total hardness of 9.2 °dH for the supply zone 8642, Volkschule St. Lorenzen Ortsnetz. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: 2023-10-23, retrieved on 08/08/2026.
How much nitrate is in the drinking water in Postcode 8644?: Marktgemeinde St. Lorenzen im Mürztal publishes a nitrate value of 3,9 mg/l for the supply zone 8642, Volkschule St. Lorenzen Ortsnetz. The statutory parametric value is 50 mg/l; the measured value represents 8 % of the parametric value. Basis: 2023-10-23, retrieved on 08/08/2026.
Who supplies the drinking water in Postcode 8644?: Marktgemeinde St. Lorenzen im Mürztal. The values shown here come from the supply zone 8642, Volkschule St. Lorenzen Ortsnetz 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.