How hard is the water in Postcode 65391?

TWIST RLP - Sauerthal publishes a total hardness of 3.16 mmol/l for the supply zone Sauerthal — that corresponds to 17.7 °dH. 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 13/07/2026.

How much nitrate is in the drinking water in Postcode 65391?

TWIST RLP - Sauerthal publishes a nitrate value of 5.3 mg/L for the supply zone Sauerthal. The statutory parametric value is 50 mg/l; the measured value represents 11 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.

Are PFAS detectable in the drinking water in Postcode 65391?

TWIST RLP - Sauerthal publishes for the supply zone Sauerthal a sum value PFAS-20 of 0 µg/L. The statutory parametric value is 0.1 µg/l; the measured value represents 0 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: Publication by the water supplier, retrieved on 13/07/2026.

Who supplies the drinking water in Postcode 65391?

TWIST RLP - Sauerthal. The values shown here come from the supply zone Sauerthal 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 65391

One supply zone, water supplier: TWIST RLP - Sauerthal.

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.

Sauerthal

TWIST RLP - Sauerthal

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.

Water hardness

17.7 °dH

Hardness range hard

Key values Sauerthal
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	0 µg/L	0.1 µg/l	0 %	Mean · Sauerthal
Nitrate	5.3 mg/L	50 mg/l	11 %	Mean · Sauerthal
Lead	< 1 µg/L below limit of quantification	10 µg/l	< 10 % *	Mean · Sauerthal
Escherichia coli (E. coli)	0 Anzahl/100ml	0/100 ml	—	Mean · Sauerthal
Sulphate	95.4 mg/L	250 mg/l	38 %	Mean · Sauerthal
Sodium	12.9 mg/L	200 mg/l	6 %	Mean · Sauerthal

* 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 (30 — most recent value per parameter)

Microbiology (1)

Microbiology – Sauerthal
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 Anzahl/100ml	0/100 ml	—	Mean · Sauerthal

Chemical parameters (14)

Chemical parameters – Sauerthal
Parameter	Value	Parametric value	Share of the parametric value	Reference
Antimony	< 0.5 µg/L below limit of quantification	5 µg/l	< 10 % *	Mean · Sauerthal
Arsenic	< 1 µg/L below limit of quantification	10 µg/l	< 10 % *	Mean · Sauerthal
Boron	< 0.02 mg/L below limit of quantification	1 mg/l	< 2 % *	Mean · Sauerthal
Cadmium	< 0.3 µg/L below limit of quantification	3 µg/l	< 10 % *	Mean · Sauerthal
Copper	< 0.005 mg/L below limit of quantification	2 mg/l	< 0.3 % *	Mean · Sauerthal
Cyanide	< 0.005 mg/L below limit of quantification	50 µg/l	< 10 % *	Mean · Sauerthal
Fluoride	0.22 mg/L	1.5 mg/l	15 %	Mean · Sauerthal
Lead	< 1 µg/L below limit of quantification	10 µg/l	< 10 % *	Mean · Sauerthal
Mercury	< 0.1 µg/L below limit of quantification	1 µg/l	< 10 % *	Mean · Sauerthal
Nickel	< 2 µg/L below limit of quantification	20 µg/l	< 10 % *	Mean · Sauerthal
Nitrate	5.3 mg/L	50 mg/l	11 %	Mean · Sauerthal
Nitrite	< 0.01 mg/L below limit of quantification	0.5 mg/l	< 2 % *	Mean · Sauerthal
Selenium	0.5 µg/L	10 µg/l	5 %	Mean · Sauerthal
Uranium	0.6 µg/L	10 µg/l	6 %	Mean · Sauerthal

PFAS (1)

PFAS – Sauerthal
Parameter	Value	Parametric value	Share of the parametric value	Reference
Sum of PFAS	0 µg/L	0.1 µg/l	0 %	Mean · Sauerthal

Indicator parameters (10)

Indicator parameters – Sauerthal
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 · Sauerthal
Ammonium	< 0.01 mg/L below limit of quantification	0.5 mg/l	< 2 % *	Mean · Sauerthal
Chloride	12.8 mg/L	250 mg/l	5 %	Mean · Sauerthal
Coliform bacteria	0 Anzahl/100ml	0/100 ml	—	Mean · Sauerthal
Iron	0.007 mg/L	0.2 mg/l	3 %	Mean · Sauerthal
Manganese	< 0.005 mg/L below limit of quantification	50 µg/l	< 10 % *	Mean · Sauerthal
pH	7.83 -	6,5–9,5	—	Mean · Sauerthal
Sodium	12.9 mg/L	200 mg/l	6 %	Mean · Sauerthal
Sulphate	95.4 mg/L	250 mg/l	38 %	Mean · Sauerthal
Temperature	8.9 °C	—	—	Mean · Sauerthal

Further parameters (4)

Further parameters – Sauerthal
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	58.5 mg/L	—	—	Mean · Sauerthal
Magnesium	34.1 mg/L	—	—	Mean · Sauerthal
Potassium	1.1 mg/L	—	—	Mean · Sauerthal
Total hardness	3.16 mmol/l	—	—	Mean · Sauerthal

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://geodaten-wasser.rlp-umwelt.de/twist/2568695000/trinkwasserqualitaet · Mittelwerte · retrieved on 13/07/2026

Frequent questions about postcode 65391

How hard is the water in Postcode 65391?: TWIST RLP - Sauerthal publishes a total hardness of 3.16 mmol/l for the supply zone Sauerthal — that corresponds to 17.7 °dH. 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 13/07/2026.
How much nitrate is in the drinking water in Postcode 65391?: TWIST RLP - Sauerthal publishes a nitrate value of 5.3 mg/L for the supply zone Sauerthal. The statutory parametric value is 50 mg/l; the measured value represents 11 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
Are PFAS detectable in the drinking water in Postcode 65391?: TWIST RLP - Sauerthal publishes for the supply zone Sauerthal a sum value PFAS-20 of 0 µg/L. The statutory parametric value is 0.1 µg/l; the measured value represents 0 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: Publication by the water supplier, retrieved on 13/07/2026.
Who supplies the drinking water in Postcode 65391?: TWIST RLP - Sauerthal. The values shown here come from the supply zone Sauerthal 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.