PFAS in Dijon's tap water: 8.9 ng/L, 17.8x our 0.5 ng/L benchmark
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
17.8× above our health benchmark
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.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
Substances below the detection limit count as 0, so the real total may be higher.
One of these four, PFOA, is classified as causing cancer in humans by the WHO's cancer research agency (IARC).
More PFAS than in 95% of the cities we track
checked on 28 July 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluorohexanoïque (PFHXA) | 0.0039 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | 0.0034 µg/L |
| Acide perfluoro-octanoïque (PFOA) | 0.0029 µg/L |
| Acide perfluoropentanoïque (PFPEA) | 0.0027 µg/L |
| Perfluorohexane sulfonate (PFHXS) | 0.0026 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | 0.0013 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | 0.0008 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,002 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,0005 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
Above our health benchmark. Here are some filter options.
- EU legal limit
- 17.62 ng/L sum of 20 PFAS, below the 100 ng/L limit
- Last PFAS test
- 28 July 2026
- Water supplier
- ODIVEA
In Dijon, the 4 most closely watched PFAS (PFAS-4) add up to 8.9 ng/L (0.0089 µg/L) at the latest PFAS check on 28 July 2026. That's 17.8 times our 0.5 ng/L health benchmark, and above Sweden's legal limit of 4 ng/L. Sum of 20 PFAS: 17.62 ng/L (0.0176 µg/L), below the EU legal limit (100 ng/L). 15 checks since 9 September 2025: PFAS-4 up to 8.9 ng/L, sometimes below the detection limit. No clear trend. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Dijon
26 PFAS checks since 4 February 2025, from the published measurements. Samples come from 3 distribution networks. The trend refers to the network “DIJON METROPOLE, DIJON VILLE, R. PPAL”.
“Calculated”: PFAS-4 worked out from the four substances in the same sample. The chart, averages and trends use lab-published sums only.
| Date | PFAS-4 | Sum of 20 PFAS | Network |
|---|---|---|---|
| 8.9 ng/L | 17.62 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS | |
| < detection limit | 2.7 ng/L | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 3.15 ng/L | 3.15 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | 021000144 | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 3.1 ng/L | 3.1 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS |
Show the 14 earlier checks (back to 4 February 2025)
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < detection limit | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 11.2 ng/L – < 12.2 ng/L · calculated | 20.86 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS | |
| < 2.5 ng/L · calculated | 5.18 ng/L | 021000144 | |
| < 2.5 ng/L · calculated | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < 2.5 ng/L · calculated | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| < 2.5 ng/L · calculated | < detection limit | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 3.21 ng/L – < 4.21 ng/L · calculated | 3.21 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS | |
| < 2.5 ng/L · calculated | < detection limit | 021000144 | |
| 2.9 ng/L – < 3.9 ng/L · calculated | 2.9 ng/L | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 2.6 ng/L – < 3.6 ng/L · calculated | 2.6 ng/L | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 3.3 ng/L – < 4.3 ng/L · calculated | 3.3 ng/L | DIJON METROPOLE, DIJON VILLE, R. PPAL | |
| 5.97 ng/L · calculated | 7.01 ng/L | DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS |
Calculated values: “<” is an upper bound from published thresholds, “≥” a lower bound, “–” means no published sum or complete measurement. How to read a PFAS result
What the latest check found
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Lead | 10 µg/L | ≤ 10 µg/L | within the limit |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 4 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 10 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.219 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | 9 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <3 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <2 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <1 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.117 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7.7 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 26.7 °f | no limit | for reference |
| Electrical conductivity | 497 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 14.7 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 31.6 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 11 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,50 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Dijon safe to drink?
Yes. At the check on 28 July 2026, the tap water in Dijon was within every limit tested. “Eau d'alimentation conforme aux exigences de qualité en vigueur pour l'ensemble des paramètres mesurés.”
How high are PFAS levels in Dijon's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 17.62 ng/L. The EU limit is 100 ng/L, so this water is at 18 % of the limit. (below the EU limit)
Does the water in Dijon also meet the strictest limits in Europe?
No. The four most harmful PFAS add up to 8.9 ng/L. That is 2.2 times Sweden's legal limit of 4 ng/L, in force since 2026. Germany will set a similar one in 2028. The water still passes the current EU legal limit (100 ng/L for the total of 20 PFAS).
Are PFAS levels rising in Dijon's tap water?
No. Since 4 February 2025, 15 checks have been published; on the main network the PFAS-4 sum stayed below the laboratory's detection limit every time. These history statistics use laboratory-published sums only.
How hard is the water in Dijon?
The water hardness in Dijon is 26.7 °f (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: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM). Retrieved on 21 September 2026.
Nearby communes
The closest to Dijon on this site.
Data source
- Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM)
- https://hubeau.eaufrance.fr/api/v1/qualite_eau_potable/resultats_dis?code_commune=21231
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- DIJON METROPOLE, DIJON VILLE, R. PPAL, DIJON METROPOLE, DIJON, F.D'OUCHE-MARCS
Water report for Dijon
Get new PFAS results for Dijon, with a short explanation. At most one update a week, only when there's something new.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.