Tap water in Cuxhaven

Landkreis Cuxhaven, Niedersachsen · Postcode 27472, 27474, 27476, 27478

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

• Limits of the Drinking Water OrdinancemetAll tested parameters (19), at the waterworks
• Data coverageCore parameters: 7 of 7Score based on complete data

Verified drinking-water values

Note from the test report (in the German original): EWE NETZ · Umfassende Trinkwasseranalyse für Cuxhaven, Probenahme am 31.03.2026 an einer Zapfstelle im Netz (Klinik Strandrobbe), untersucht vom Labor IBEN. EWE NETZ versorgt die Kernstadt und die Stadtteile Arensch, Berensch und Altenbruch aus zwei Wasserwerken. Eine Gesamthärte nennt der Bericht nicht. Die Angaben auf der EWE-Seite (7,20 °dH bzw. 1,85 mmol/l, weich) passen nicht zueinander, deshalb zeigen wir keinen Härtewert; laut EWE ist das Wasser weich. Weil die Probe an einer Zapfstelle in einem Gebäude genommen wurde, spiegeln Kupfer, Blei und Nickel auch die dortige Hausinstallation wider.

Is a value wrong or out of date?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

Background on household plumbing, not a measurement: in Cuxhaven, 58 % of buildings with living space were built before 1970, and a further 16 % 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 Cuxhaven

• Nitrate 2.81 mg/L – about 6 % of the limit of 50 mg/L and in the unremarkable range. Boiling does not reduce nitrate.
• PFAS (sum of PFAS-20) – not detectable in the sample evaluated. The limit of 0.1 µg/L (100 ng/L) has applied since 12 January 2026.
• Lead 0.2 µg/L – about 2 % of the limit of 10 µg/L, measured at the waterworks. Today’s limit is met; it will drop to 5 µg/L on 12 January 2028. Lead from household plumbing (old lead pipes) comes on top of this and is not covered by this value.
• Uranium 0.06 µg/L – unremarkable against a limit of 10 µg/L. In some regions uranium occurs naturally from the rock (geogenic).
• pH 7.92 – within the range of the Drinking Water Ordinance (6.5 to 9.5). The pH determines how corrosive the water is in household plumbing.

Baby food and low sodium: tap water in Cuxhaven 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 Cuxhaven 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)

Against the other thresholds of Annex 6, the water would qualify as: low in sodium (“suitable for a low-sodium diet”) (Sodium 15 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 Cuxhaven

WaterScore

• Total100 / 100
• Chemical safety100 / 100
• Heavy metals100 / 100
• PFAS100 / 100
• Nutrients100 / 100
• General parameters100 / 100
• Data timeliness100 / 100
• Data quality100 / 100

Data coverage: 7 of 7 core parameters. Missing parameters are neither estimated nor counted as harmless: the score is based only on the values available. 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

• Umfassende Trinkwasseranalyse Cuxhaven – Wasserprobe Nr. 13818 vom 31.03.2026 (EWE NETZ GmbH (Analyse: Labor IBEN GmbH))

Suggested citation: Trinkwassermonitor (2026): Tap water in Cuxhaven. Values according to the water supplier’s test report, sampling date 31 March 2026; at the waterworks, not household plumbing. https://trinkwassermonitor.ink/en/tap-water/cuxhaven/

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

Data as of: 31 March 2026 · verified: 24 of 24 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 Cuxhaven. Retrieved from https://trinkwassermonitor.ink/en/tap-water/cuxhaven/.”

Further information

• German version: Trinkwasser in Cuxhaven
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