PFAS in Bourg-lès-Valence'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 Châteauneuf-sur-Isère, on the same distribution network as Bourg-lès-Valence (S PV CHATEAUNEUF SUR ISERE). 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 perfluoropentane sulfonique (PFPS) | <0,001 µg/L |
| Acide perfluorodecane sulfonique (PFDS) | <0,001 µg/L |
| Acide sulfonique de perfluorooctane (PFOS) | <0,001 µg/L |
| Acide perfluoro tridecane sulfonique (PFTrDS) | <0,005 µg/L |
| Acide perfluorododécane sulfonique (PFDoDS) | <0,001 µg/L |
| Acide perfluoropentanoïque (PFPEA) | <0,001 µg/L |
| Acide perfluoroheptane sulfonique (PFHpS) | <0,002 µg/L |
| Acide perfluoro undecane sulfonique (PFUnDS) | <0,002 µg/L |
| Acide perfluoro tridecanoique (PFTrDA) | <0,001 µg/L |
| Acide perfluorohexanoïque (PFHXA) | <0,002 µg/L |
| Acide perfluoro-octanoïque (PFOA) | <0,001 µg/L |
| Acide perfluorobutanoïque (PFBA) | <0,002 µg/L |
| Acide perfluoro-nonanoïque (PFNA) | <0,001 µg/L |
| Acide perfluoro-decanoïque (PFDA) | <0,001 µg/L |
| Acide perfluoroheptanoïque (PFHPA) | <0,001 µg/L |
| Acide sulfonique de perfluorobutane (PFBS) | <0,001 µg/L |
| Acide perfluoro undecanoïque (PFUnA) | <0,001 µg/L |
| Perfluorohexane sulfonate (PFHXS) | <0,001 µg/L |
| Acide perfluorononane sulfonique (PFNS) | <0,002 µg/L |
| Acide perfluorododécanoique (PFDoDA) | <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 Bourg-lès-Valence
Get new PFAS results for Bourg-lès-Valence, 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
- VALENCE ROMANS EAU
In Bourg-lès-Valence, 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 Châteauneuf-sur-Isère, on the same network. 11 checks since 3 July 2025: PFAS-4 up to 2 ng/L, sometimes below the detection limit, averaging at least 1.17 ng/L over 12 months (non-detects as 0). No clear trend. Source: Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM).
Details and sources
PFAS over time in Bourg-lès-Valence
27 PFAS checks since 13 February 2023, from the published measurements. Samples from 2 communes on the same network: it's the same water, so each one applies to Bourg-lès-Valence. Samples come from 2 distribution networks. The trend refers to the network “BOURG LES VALENCE GENERAL”.
“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 | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L | 6 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L | < 29 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L | 9 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L | < 29 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| 2 ng/L | 26 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 1 ng/L | 22 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L | < 29 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| 2 ng/L | 20 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 2 ng/L | 33 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 20 ng/L | < 28 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| 4 ng/L – < 5 ng/L · calculated | 33 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL |
Show the 15 earlier checks (back to 13 February 2023)
| 1 ng/L – < 4 ng/L · calculated | 32 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L · calculated | < 100 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L · calculated | 23 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L · calculated | < 1 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L · calculated | < 1 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L · calculated | 21 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L · calculated | < 1 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L · calculated | 14 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L · calculated | 5.9 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| < 4 ng/L · calculated | < 1 ng/L | Châteauneuf-sur-Isère | S PV CHATEAUNEUF SUR ISERE | |
| < 4 ng/L · calculated | < 1 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 9.9 ng/L – < 10.9 ng/L · calculated | 37.1 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 8 ng/L – < 9 ng/L · calculated | 41.9 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 9 ng/L – < 10 ng/L · calculated | 44.3 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL | |
| 7.3 ng/L – < 17.3 ng/L · calculated | 36 ng/L | Bourg-lès-Valence | BOURG LES VALENCE GENERAL |
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 | 40.4 mg/L | ≤ 50 mg/L | within the limit |
See all 21 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nitrate | 40.4 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 | 0.11 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 | <1 n/(100mL) | ≤ 0 mL) | within the limit |
| pH | 7.1 unité pH | 6.5–9 unité pH | within the limit |
| Water hardness | 32.35 °f | no limit | for reference |
| Electrical conductivity | 650 µS/cm | 200–1,100 µS/cm | within the limit |
| Chloride | 19.4 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 55 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 12.1 mg/L | ≤ 200 mg/L | within the limit |
| Iron | <10 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | <0,1 NFU | ≤ 2 NFU | within the limit |
Frequently asked questions
Is tap water in Bourg-lès-Valence safe to drink?
Yes. At the check on 9 July 2026, the tap water in Bourg-lès-Valence 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.”
How high are PFAS levels in Bourg-lès-Valence'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 Bourg-lès-Valence 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 Bourg-lès-Valence's tap water?
No clear trend. Since 13 February 2023, 11 checks have been published; on the main network the PFAS-4 sum ranged between 1 ng/L and 2 ng/L (4 quantified values), at times below the detection limit. pfasnearme only reports a trend from a change of at least 25 % and 1 ng/L. These history statistics use laboratory-published sums only.
How hard is the water in Bourg-lès-Valence?
The water hardness in Bourg-lès-Valence is 32.4 °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 Bourg-lès-Valence, so in principle the same water.
Nearby communes
The closest to Bourg-lès-Valence 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=26058
- License
- Licence Ouverte / Open Licence (Etalab)
- Retrieved
- 21 September 2026
- Supply networks
- BOURG LES VALENCE GENERAL, S PV CHATEAUNEUF SUR ISERE
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.