Tap water in Au am Rhein

Name: Tap water in Au am Rhein
Creator: Trinkwassermonitor
License: https://creativecommons.org/licenses/by/4.0/

Landkreis Rastatt, Baden-Württemberg · Postcode 76474

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

Short answer: For Au am Rhein, verified values from the water supplier’s test report: 4 (as of 23 April 2026). All tested parameters with a legal limit (2) meet the limits set by the German Drinking Water Ordinance (TrinkwV). Source: test report by Au am Rhein. WaterScore (provisional): 94.7 out of 100 – the test report contains only 0 of 7 core parameters.

Limits of the Drinking Water OrdinancemetAll tested parameters (2), at the waterworks
Data coverageCore parameters: 0 of 7Score provisional

Verified drinking-water values

Parameter	Value	Limit (TrinkwV)	Sampling date	Source	Status
pH	7.24	6.5–9.5	23 April 2026	Au am Rhein (veröffentlicht im BDEW-Wasserportal)	verified
Electrical conductivity	623 µS/cm	–	23 April 2026	Au am Rhein (veröffentlicht im BDEW-Wasserportal)	verified
Ammonium	< 0.06 mg/L	0.5 mg/L	23 April 2026	Au am Rhein (veröffentlicht im BDEW-Wasserportal)	verified
Coliform bacteria	0 KBE/100ml	0 per 100 ml	23 April 2026	Au am Rhein (veröffentlicht im BDEW-Wasserportal)	verified

Note from the test report (in the German original): Au am Rhein · Trinkwasseranalyse für das Versorgungsgebiet Au am Rhein, Stand 23.04.2026, veröffentlicht im BDEW-Wasserportal. Die Werte wurden automatisch aus dem PDF ausgelesen und einzeln gegengeprüft; die Seite steht beim Originalwert. Laut Wasserportal liegen der Ortsmittelpunkt von Au am Rhein und vier Prüfpunkte rund 1,5 km darum in diesem Versorgungsgebiet. Welches Wasser an einer bestimmten Adresse ankommt, sagt verbindlich der Versorger. 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Is a value wrong or out of date?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 Au am Rhein, 38 % 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 Au am Rhein

pH 7.24 – within the range of the Drinking Water Ordinance (6.5 to 9.5). The pH determines how corrosive the water is in household plumbing.

Frequently asked questions about tap water in Au am Rhein

Can you drink the tap water in Au am Rhein?

According to the verified values, yes: All tested parameters with a legal limit (2) meet the limits set by the German Drinking Water Ordinance (TrinkwV). WaterScore (provisional): 94.7 out of 100 – the test report contains only 0 of 7 core parameters. This applies to the water from the waterworks – restrictions can only arise from old household plumbing.

Is there PFAS in the tap water in Au am Rhein?

The published analysis by Au am Rhein 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.

Do I need to filter my tap water in Au am Rhein?

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.

WaterScore

Total (provisional)94.7 / 100
Chemical safety100 / 100
Nutrients100 / 100
Data timeliness100 / 100
Data quality86.7 / 100

Data coverage: 0 of 7 core parameters. Not in the test report: Nitrate, Nitrite, Lead, Copper, Arsenic, Uranium 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

Trinkwasseranalyse Versorgungsgebiet Au am Rhein, Stand 23.04.2026 (Au am Rhein (veröffentlicht im BDEW-Wasserportal)) · SHA-256 of the evaluated file: f0e796188977685e…, checked on 11 October 2026

Suggested citation: Trinkwassermonitor (2026): Tap water in Au am Rhein. Values according to the water supplier’s test report, sampling date 23 April 2026; at the waterworks, not household plumbing. https://trinkwassermonitor.ink/en/tap-water/au-am-rhein/

JSON: /api/v1/evidence?city=au-am-rhein

Data as of: 23 April 2026 · verified: 4 of 4 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 Au am Rhein. Retrieved from https://trinkwassermonitor.ink/en/tap-water/au-am-rhein/.”