PFAS in Romans-sur-Isère's tap water: under 4 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Hub'eau
PFAS in drinking water
No PFAS detected
The lab sees nothing below 4 ng/L, 8 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.
Sample taken in Saint-Paul-lès-Romans, on the same distribution network as Romans-sur-Isère (ROMANS MOYEN SERVICE). The health authority samples one tap per network; a network carries the same treated water everywhere.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
The lab detects each of the four substances from 1 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 1 June 2026
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <0,001 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Romans-sur-Isère
Get new PFAS results for Romans-sur-Isère, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
- Last PFAS test
- 1 June 2026
- Water supplier
- VEOLIA EAU CGE - VALENCE
In Romans-sur-Isère, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 1 June 2026. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0,029 µg/L, below the EU legal limit (100 ng/L). Sampled in Saint-Paul-lès-Romans, on the same network. 14 checks since 11 July 2025: PFAS-4 up to 4 ng/L, sometimes below the detection limit, averaging at least 1.44 ng/L over 12 months (non-detects as 0). Falling on the main network. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Romans-sur-Isère
26 PFAS checks since 9 August 2024, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Romans-sur-Isère. Samples come from 3 distribution networks. The trend refers to the network “ROMANS MOYEN SERVICE”.
“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 | Sampled at | Network |
|---|---|---|---|---|
| < 4 ng/L | < 29 ng/L | Saint-Paul-lès-Romans | ROMANS MOYEN SERVICE, ROMANS HAUT SERVICE | |
| 1 ng/L | 2 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| 2 ng/L | 4 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE, ROMANS HAUT SERVICE | |
| 1 ng/L | 3 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| < 4 ng/L | 3 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 3 ng/L | 8 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| < 4 ng/L | < 29 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| < 4 ng/L | < 29 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 4 ng/L | 8 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 1 ng/L | 2 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| < 4 ng/L | < 29 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 1 ng/L | 3 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE |
Show the 14 earlier checks (back to 9 August 2024)
| < 20 ng/L | < 28 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 4 ng/L | 9 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| < 4 ng/L · calculated | 3 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| < 4 ng/L · calculated | < 100 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 2 ng/L – < 5 ng/L · calculated | 13 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| < 4 ng/L · calculated | 3 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| 4 ng/L – < 6 ng/L · calculated | 12 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 3 ng/L – < 5 ng/L · calculated | 7 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| < 4 ng/L · calculated | 1 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| < 4 ng/L · calculated | < 100 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 1 ng/L – < 4 ng/L · calculated | 4 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE | |
| 4 ng/L – < 6 ng/L · calculated | 15 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 4 ng/L – < 5 ng/L · calculated | 12 ng/L | Romans-sur-Isère | ROMANS MOYEN SERVICE | |
| 1 ng/L – < 4 ng/L · calculated | 2 ng/L | Romans-sur-Isère | ROMANS BAS SERVICE |
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 |
|---|---|---|---|
| Nitrate | 28.9 mg/L | ≤ 50 mg/L | within the limit |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 28.9 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0,01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | <2 µg/L | ≤ 10 µg/L | within the limit |
| Copper | <0,010 mg(Cu)/L | ≤ 2 mg(Cu)/L | within the limit |
| Nickel | <5 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | <2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <1 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <5 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | <10 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.06 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Enterococci | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| Coliform bacteria | ILLISIBL n/(100mL) | ≤ 0 mL) | no verdict |
| pH | 7.3 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 33.87 °f | no limit | for reference |
| Electrical conductivity | 699 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 10 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 20.5 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 7.6 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.15 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Romans-sur-Isère safe to drink?
Yes. At the check on 29 July 2026, the tap water in Romans-sur-Isère was within every limit tested. “Eau d'alimentation conforme aux limites de qualité en vigueur. La référence de qualité fixée à 25°C pour la température est dépassée. Ce paramètre n'est représentatif que du lieu de prélèvement. Le résultat « ILLISIBL » correspond à un envahissement de la membrane par des colonies non caractéristiques, empêchant l'interprétation du paramètre coliformes. Ce paramètre étant une référence de qualité, ce résultat n'entraîne pas de non-conformité du prélèvement. Un entretien des ouvrages et une chloration préventive du réseau sont préconisés ainsi que la recherche des causes possibles d'altération de la qualité de l'eau.”
How high are PFAS levels in Romans-sur-Isère's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 29 ng/L. The EU limit is 100 ng/L, so this water is under 29 % of the limit. (below the EU limit)
Does the water in Romans-sur-Isère 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 4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
Are PFAS levels rising in Romans-sur-Isère's tap water?
No, they are falling. On the main network, the PFAS-4 sum went from 4 ng/L (11 July 2025) to 2 ng/L (5 March 2026) across 4 quantified checks. These history statistics use laboratory-published sums only.
How hard is the water in Romans-sur-Isère?
The water hardness in Romans-sur-Isère is 33.9 °f (hard). 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.
Same water network
Same distribution network as Romans-sur-Isère, so in principle the same water.
Nearby communes
The closest to Romans-sur-Isère 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=26281
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- ROMANS BAS SERVICE, ROMANS MOYEN SERVICE, ROMANS HAUT SERVICE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.