PFAS in Wuppertal's tap water: under 1 ng/L, none of the four main PFAS detected
PFAS figure: annual value · Source: WSW Wuppertaler Stadtwerke
PFAS in drinking water
None of the 4 most harmful PFAS detected
The lab sees nothing below 1 ng/L, 2 times our benchmark of 0.5 ng/L. Water above our benchmark would pass this check unnoticed.
0.5 ng/L is our benchmark, not an official limit. Same EFSA method as Sweden, Denmark and the Netherlands, but stricter. It's a yearly average, compared here with the latest check.
The PFAS figures come from the sampling point "Wasserwerk Benrath (Rheinuferfiltrat)", the one with the highest PFAS-4 value among the 3 waterworks or sampling points serving Wuppertal. The others are in the table of all values; the tap often carries a blend of several works.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
checked on 31 December 2025
None found. The lab sees nothing below 1 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Wuppertal
Get new PFAS results for Wuppertal, with a short explanation. At most one update a week, only when there's something new.
- Legal limit (Germany and EU)
- 5 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Reporting year
- 2025 utility's annual figure
- Water supplier
- WSW Wuppertaler Stadtwerke / Eigenbetrieb Wasser und Abwasser Wuppertal
In Wuppertal, none of the 4 most closely watched PFAS (PFAS-4) was detected at the utility's annual figure on 31 December 2025. The total is below 1 ng/L, the sum of the detection limits and 2 times our 0.5 ng/L benchmark. Sum of 20 PFAS: 5 ng/L (0.005 µg/L), below the EU legal limit (100 ng/L). Source: Eigenbetrieb Wasser und Abwasser Wuppertal – Trinkwasseranalyse 2025, Jahresmittelwerte.
Details and sources
What the latest check found
The authorities have not published an overall verdict for this water.
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · sampling point Wasserwerk Dabringhausen (Große Dhünn-Talsperre) | <0,001 µg/L | ≤ 0.004 µg/L | within the limit |
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · sampling point Wasserwerk Herbringhausen (Kerspe-/Herbringhauser Talsperre) | <0,001 µg/L | ≤ 0.004 µg/L | within the limit |
| Sum of 20 PFAS · sampling point Wasserwerk Dabringhausen (Große Dhünn-Talsperre) | <0,001 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · sampling point Wasserwerk Herbringhausen (Kerspe-/Herbringhauser Talsperre) | <0,001 µg/L | ≤ 0.1 µg/L | within the limit |
| Nitrate | 22 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,03 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <0,0002 mg/L | ≤ 0.01 mg/L | within the limit |
| Copper | <0,001 mg/L | ≤ 2 mg/L | within the limit |
| Nickel | 0.0005 mg/L | ≤ 0.02 mg/L | within the limit |
| Arsenic | 0.0006 mg/L | ≤ 0.01 mg/L | within the limit |
| Cadmium | <0,0001 mg/L | ≤ 0.003 mg/L | within the limit |
| Chromium | 0.0005 mg/L | ≤ 0.025 mg/L | within the limit |
| Uranium | 0.0005 mg/L | ≤ 0.01 mg/L | within the limit |
| Fluoride | <0,20 mg/L | ≤ 1.5 mg/L | within the limit |
| Water hardness | 11.3 °dH | no limit | for reference |
| Electrical conductivity | 608 µS/cm | ≤ 2,500 µS/cm | within the limit |
| Chloride | 69 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 70 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 39.1 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <0,020 mg/L | ≤ 0.2 mg/L | within the limit |
| Turbidity | 0.08 NTU | ≤ 1 NTU | within the limit |
Frequently asked questions
Is tap water in Wuppertal safe to drink?
All the values shown here (31 December 2025) are within the legal limits, but the authorities have not published an overall verdict for this water.
How high are PFAS levels in Wuppertal's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 5 ng/L. The EU limit is 100 ng/L, so this water is at 5 % of the limit. (below the EU limit)
Does the water in Wuppertal also meet the strictest limits in Europe?
As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 1 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
Which PFAS limits apply in Germany?
Germany's Trinkwasserverordnung of 2023 adopts the EU limit of 100 ng/L for the sum of 20 PFAS, binding since 12 January 2026. For the four most harmful PFAS (PFAS-4) a limit of 20 ng/L applies from 12 January 2028. This site's 0.5 ng/L benchmark and the 4 ng/L used as the health reference (Sweden's limit) are stricter than both.
How hard is the water in Wuppertal?
The water hardness in Wuppertal is 11.3 °dH (medium). This mainly matters for household appliances and detergent dosing, not for health.
Where does this data come from?
All values come from official publications: Eigenbetrieb Wasser und Abwasser Wuppertal – Trinkwasseranalyse 2025, Jahresmittelwerte. Retrieved on 28 September 2026.
Nearby cities
The closest to Wuppertal on this site.
Data source
- Eigenbetrieb Wasser und Abwasser Wuppertal – Trinkwasseranalyse 2025, Jahresmittelwerte
- https://www.wuppertal.de/microsite/wasserversorgung/wasserversorgung/artikel/trinkwasseranalyse.php
- License
- Veröffentlichung von WSW Wuppertaler Stadtwerke / Stadt Wuppertal; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
- Retrieved
- 28 September 2026
- Supply networks
- Wasserwerk Benrath (Rheinuferfiltrat), Wasserwerk Dabringhausen (Große Dhünn-Talsperre), Wasserwerk Herbringhausen (Kerspe-/Herbringhauser Talsperre)
WSW Wuppertaler Stadtwerke / Eigenbetrieb Wasser und Abwasser Wuppertal: Drinking-water analysis, annual means of the three waterworks (PDF). Latest value dated 31 December 2025. Annually, expected in the middle of the following year.
Limits in Germany. Germany's Trinkwasserverordnung of 2023 adopts the EU limit of 100 ng/L for the sum of 20 PFAS, binding since 12 January 2026. For the four most harmful PFAS (PFAS-4) a limit of 20 ng/L applies from 12 January 2028. This site's 0.5 ng/L benchmark and the 4 ng/L used as the health reference (Sweden's limit) are stricter than both.
Jahresmittelwerte 2025 je Wasserwerk aus der Trinkwasseranalyse der Stadt Wuppertal (PDF, ein Blatt für die drei WSW-Wasserwerke), Angaben in mg/l in µg/L umgerechnet. Für Wuppertal liegen 3 Werke bzw. Messstellen vor (Wasserwerk Benrath (Rheinuferfiltrat), Wasserwerk Dabringhausen (Große Dhünn-Talsperre), Wasserwerk Herbringhausen (Kerspe-/Herbringhauser Talsperre)). Die PFAS-Kennzahl der Seite stammt aus „Wasserwerk Benrath (Rheinuferfiltrat)“, der Messstelle mit dem höchsten PFAS-4-Wert; die übrigen stehen in der Tabelle. Nächste Aktualisierung: Jahresmittelwerte 2026, voraussichtlich Mitte 2027
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.