TrinkwassermonitorTap water in Germany

Water hardness and tap water in Waiblingen

Rems-Murr-Kreis, Baden-Württemberg · Postcode 71332, 71334, 71336

This page is a translation of the German version; the German page is authoritative. German version · Report a translation error

Short answer: Depending on the address, Waiblingen receives water from five supply zones: Versorgungszone 2 at 13.7 °dH, Versorgungszone 1 at 13.3 °dH, Versorgungszone 3 at 13.6 °dH, Versorgungszone 4 at 9.1 °dH and Versorgungszone 5 at 13.5 °dH, all in the hardness range “medium” (as of 2025). All tested parameters with a legal limit (40) meet the limits set by the German Drinking Water Ordinance (TrinkwV). Source: test report by Stadtwerke Waiblingen. WaterScore (provisional): 100 out of 100 – the test report contains only 3 of 7 core parameters.
five waters depending on the district: The values above apply to the water “Versorgungszone 2”, according to the supplier for laut Karte der Stadtwerke Waiblingen (Kernstadt); Landeswasserversorgung. Other waters: “Versorgungszone 1”, “Versorgungszone 3”, “Versorgungszone 4” and “Versorgungszone 5”. The supplier does not publish how many addresses each water supplies.

Verified drinking-water values: water “Versorgungszone 2”

ParameterValueLimit (TrinkwV)Sampling dateSourceStatus
Nitrate20.7 mg/L
50 mg/L2025Stadtwerke Waiblingen GmbHverified
Lead< 0.001 mg/L0.01 mg/L
2025Stadtwerke Waiblingen GmbHverified
Uranium0.0011 mg/L
0.01 mg/L2025Stadtwerke Waiblingen GmbHverified
Chloride36.7 mg/L
250 mg/L2025Stadtwerke Waiblingen GmbHverified
Sulphate23 mg/L250 mg/L2025Stadtwerke Waiblingen GmbHverified
Sodium14.3 mg/L200 mg/L2025Stadtwerke Waiblingen GmbHverified
Calcium78.6 mg/L–2025Stadtwerke Waiblingen GmbHverified
Magnesium12 mg/L–2025Stadtwerke Waiblingen GmbHverified
pH7.716.5–9.52025Stadtwerke Waiblingen GmbHverified
Total hardness13.7 °dH (medium)no legal limit2025Stadtwerke Waiblingen GmbHverified
Electrical conductivity543 µS/cm–2025Stadtwerke Waiblingen GmbHverified
Fluoride0.06 mg/L1.5 mg/L2025Stadtwerke Waiblingen GmbHverified

Note from the test report (in the German original): Stadtwerke Waiblingen · Trinkwasser-Jahresanalyse 2025, Jahresmittelwerte je Versorgungszone (akkreditiertes Labor), deshalb ist nur das Jahr angegeben. Diese Werte gelten für Versorgungszone 2 (laut Karte der Stadtwerke Waiblingen (Kernstadt); Landeswasserversorgung). Waiblingen ist in fünf Zonen geteilt; wie viele Adressen jede Zone versorgt, veröffentlichen die Stadtwerke nicht, welche Zone für Ihre Adresse gilt, zeigt ihre Karte. Die Werte gelten ab Wasserwerk.

Is a value wrong or out of date? Report an error – we check every report against the original source.

Water at your own tap: The values describe the water the supplier delivers – not automatically the water at your tap. The water supplier is responsible up to the service connection (Hausanschluss); the building owner is responsible for the pipes beyond it. Lead can dissolve from lead pipes, leaded solder joints or old brass fittings, especially when water has stood in the pipes for a long time (stagnant water); this mainly affects buildings constructed before about 1973. If water has stood in the pipes for several hours, let it run until it comes out cool. If you suspect lead pipes, a lead analysis of the stagnant water by an accredited laboratory will help.

Background on household plumbing, not a measurement: in Waiblingen, 50 % of buildings with living space were built before 1970, and a further 14 % between 1970 and 1979 (Zensus 2022, Statistisches Bundesamt, dl-de/by-2-0). (Zensus 2022) According to the German Environment Agency (Umweltbundesamt), lead pipes exist at most in houses built before 1973 – and by no means in all of them. Whether there are any in your house is known to the owner or a plumber. (UBA)

What the values mean for Waiblingen

Water hardness in Waiblingen in everyday life

At 13.7 °dH, Waiblingen is in the hardness range “medium” (soft: below 8.4 °dH, medium: 8.4–14 °dH, hard: above 14 °dH).

Baby food and low sodium: tap water in Waiblingen next to the bottled-water thresholds

Bottled water may only be labelled “suitable for preparing infant food” („geeignet für die Zubereitung von Säuglingsnahrung“) if it keeps to the maximum levels of the German Mineral and Table Water Ordinance (Mineral- und Tafelwasser-Verordnung, Annex 6). Here the published values for Waiblingen are shown next to them, each substance on its own. This is a comparison with labelling thresholds for bottled water, not a statement on whether your tap water is suitable for baby food. (Min/TafelWV, Anlage 6)

Values at the waterworks next to the maximum levels for bottled water “suitable for infant food”
SubstanceMaximum levelValue in Waiblingen
Sodium20 mg/l14.3 mg/l – not above
Nitrate10 mg/l20.7 mg/l – above
Nitrite0.02 mg/lnot in the report
Sulphate240 mg/l23 mg/l – not above
Fluoride0.7 mg/l0.06 mg/l – not above
Manganese0.05 mg/lnot in the report
Arsenic0.005 mg/lnot in the report
Uranium0.002 mg/l0.0011 mg/l – not above

Against the other thresholds of Annex 6, the water would qualify as: low in sodium (“suitable for a low-sodium diet”) (Sodium 14.3 mg/l, threshold below 20 mg/l).

For context: the German Environment Agency (Umweltbundesamt) considers preparing baby food with bottled water carrying this label necessary only in rare cases, for example when tap water is temporarily allowed to contain more than 50 mg/l nitrate. (UBA 2016, p. 59) Water from lead pipes in the house is always unsuitable for infants. (UBA 2020, p. 16) The values apply at the waterworks. Questions about baby food are answered by your midwife, your paediatrician and the health office (Gesundheitsamt).

Frequently asked questions about tap water in Waiblingen

Can you drink the tap water in Waiblingen?

According to the verified values, yes: All tested parameters with a legal limit (40) meet the limits set by the German Drinking Water Ordinance (TrinkwV). WaterScore (provisional): 100 out of 100 – the test report contains only 3 of 7 core parameters. This applies to the water from the waterworks – restrictions can only arise from old household plumbing.

How hard is the water in Waiblingen?

It depends on the address: Versorgungszone 2 13.7 °dH, Versorgungszone 1 13.3 °dH, Versorgungszone 3 13.6 °dH, Versorgungszone 4 9.1 °dH and Versorgungszone 5 13.5 °dH – all in the hardness range “medium”. Dose detergent for the hardness range “medium”.

Is there PFAS in the tap water in Waiblingen?

The published analysis by Stadtwerke Waiblingen that we evaluated gives no PFAS value. This does not mean there is no PFAS in the water; there is simply no figure for it. Since 12 January 2026, a limit of 0.1 µg/l has applied to the sum of PFAS-20. The supplier can tell you whether PFAS was measured and with what result. For the other waters, the analyses give no PFAS value.

Do I need to filter my tap water in Waiblingen?

Based on the verified supplier values, a filter is not necessary. It can make sense if you do not like the taste. If you suspect lead pipes in an old building, a filter does not help; a laboratory analysis at the tap does – that is a question of the household plumbing, not of the water leaving the works.

Is the nitrate level in Waiblingen a concern?

It depends on the address: Versorgungszone 2 20.7 mg/L, Versorgungszone 1 19.8 mg/L, Versorgungszone 3 21.2 mg/L, Versorgungszone 4 3.4 mg/L and Versorgungszone 5 19.6 mg/L. All values are below the limit of 50 mg/L. The limit of the Drinking Water Ordinance also applies to preparing baby food; mineral water labelled “suitable for preparing infant food” („geeignet für die Zubereitung von Säuglingsnahrung“) may contain at most 10 mg/L nitrate. Boiling does not help against nitrate.

WaterScore

Data coverage: 3 of 7 core parameters. Not in the test report: Nitrite, Copper, Arsenic and PFAS (sum). Missing parameters are neither estimated nor counted as harmless: the score is based only on the values available and is therefore provisional. It is not a health assessment and says nothing about the water beyond the service connection. Methodology v3: how we calculate the WaterScore.

Evidence: cite and check

Suggested citation: Trinkwassermonitor (2025): Tap water in Waiblingen. Values according to the water supplier’s test report, sampling date 2025; at the waterworks, not household plumbing. https://trinkwassermonitor.ink/en/tap-water/waiblingen/

JSON: /api/v1/evidence?city=waiblingen

Data as of: 2025 · verified: 12 of 12 evaluated parameters.

This page shows only verified test data with sources, or states explicitly where data is missing (no estimated values). Cite as: “Trinkwassermonitor (2026). Tap water in Waiblingen. Retrieved from https://trinkwassermonitor.ink/en/tap-water/waiblingen/.”

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