Votre eau est potable et respecte toutes les normes sanitaires en vigueur.
Analyse du 11/08/2026 · SYND DES EAUX DE SAINT MARTIN LONGUEAU · Réseau 060000829
L'eau du robinet à Saint-Martin-Longueau en bref
La dernière analyse de l'eau du robinet à Saint-Martin-Longueau, réalisée le 11/08/2026 (distributeur : SYND DES EAUX DE SAINT MARTIN LONGUEAU), montre une eau conforme aux limites et références de qualité suivies. Sur les 12 derniers mois analysés (depuis août 2025), on compte 7 conformes, 3 non conformes et 2 avec restriction. La teneur en nitrates est modérée (27,2 mg/L pour une limite de 50 mg/L). Les autres paramètres réglementés mesurés restent nettement sous leurs limites. Dans le département Oise (60), 89 % des communes ont une eau conforme aux limites réglementaires lors du dernier contrôle.
| Paramètre | Aoû 2026 | Jul 2026 | Jun 2026 | Mai 2026 | Avr 2026 | Mar 2026 | Fév 2026 | Jan 2026 | Déc 2025 | Oct 2025 | Sep 2025 | Aoû 2025 | Jul 2025 | Jun 2025 | Mai 2025 | Avr 2025 | Mar 2025 | Fév 2025 | Jan 2025 | Déc 2024 | Nov 2024 | Oct 2024 | Sep 2024 | Aoû 2024 | Jul 2024 | Jun 2024 | Mai 2024 | Avr 2024 | Mar 2024 | Fév 2024 | Jan 2024 | Déc 2023 | Nov 2023 | Oct 2023 | Sep 2023 | Aoû 2023 | Jul 2023 | Jun 2023 | Mai 2023 | Avr 2023 | Mar 2023 | Fév 2023 | Jan 2023 | Déc 2022 | Nov 2022 | Oct 2022 | Sep 2022 | Aoû 2022 | Jul 2022 | Jun 2022 | Mai 2022 | Avr 2022 | Mar 2022 | Fév 2022 | Jan 2022 | Déc 2021 | Nov 2021 | Oct 2021 | Sep 2021 | Aoû 2021 | Jul 2021 | Jun 2021 | Mai 2021 | Avr 2021 | Mar 2021 | Fév 2021 | Jan 2021 |
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| Bactériologie | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Escherichia coli (n/(100mL)) | 0 | Présence | Présence | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Entérocoques (n/(100mL)) | 0 | Présence | Présence | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Coliformes (n/(100mL)) | 0 | 64 | 1,11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| Inorganiques | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Nitrates (mg/L) | 27,2 | 27,6 | 36,4 | 30,7 | 30,3 | 34,4 | 30,4 | 34,7 | 34 | 28 | – | – | 28,9 | – | 31,2 | – | 3 | 28,4 | 28,3 | – | – | 28,2 | 31,9 | 26,1 | – | – | 27,8 | 27,7 | – | 39,8 | 27,6 | – | – | 27,8 | 31,6 | – | 34,9 | – | – | 27,6 | – | 33 | 35,6 | – | – | 29,1 | 27,9 | – | 36,1 | – | – | 35,5 | – | 32,1 | 35,1 | 32 | 29,8 | 30,7 | 32,5 | 30,9 | 29,3 | 30,3 | 27,4 | 28,5 | 26,6 | 30,3 | 30,3 |
| Nitrites (mg/L) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | – | – | 0 | – | 0 | – | 0 | 0 | 0 | – | – | 0 | 0 | 0 | – | – | 0 | 0 | – | 0 | 0 | – | – | 0 | 0 | – | 0 | – | – | 0 | – | 0 | 0 | – | – | 0 | 0 | – | 0 | – | – | 0 | – | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Nitrates + Nitrites (mg/L) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | – | – | 0 | – | 0 | – | – | 0 | 0 | – | – | 0 | – | 0 | – | – | 0 | 0 | – | 0 | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | 0 | 0 | 0 | – | – |
| Ammonium (mg/L) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,058 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| pH (unité pH) | 7,5 | 7,6 | 7,4 | 7,4 | 7,5 | 7,3 | 7,4 | 7,5 | 7,1 | 7,4 | 7,3 | 7,7 | 7,6 | 7,5 | 7,6 | 7,4 | 7,4 | 7,2 | 7,2 | 7,5 | 7,1 | 7,2 | 7,5 | 7,2 | 7,4 | 7,4 | 7,1 | 7,3 | 7,5 | 7,3 | 7,2 | 7,5 | 7,4 | 7,2 | 7,5 | 7,5 | 7,2 | 7,4 | 7,4 | 7,3 | 7,5 | 7,4 | 7 | 7,3 | 7,5 | 7,3 | 7,4 | 7,6 | 7,2 | 7,3 | 7,5 | 7,3 | 7,5 | 7,5 | 7,5 | 7,3 | 7,5 | 7,6 | 7,2 | 7,3 | 7,2 | 7,4 | 7,3 | 7,2 | 7,3 | 7,3 | 7,3 |
| Turbidité (NFU) | 0 | 0 | 0,86 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,58 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,32 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Conductivité (µS/cm) | 620 | 650 | 630 | 640 | 640 | 670 | 640 | 670 | 640 | 605 | 645 | 645 | 600 | 645 | 635 | 620 | 595 | 630 | 630 | 640 | 665 | 620 | 655 | 640 | 640 | 640 | 630 | 630 | 640 | 680 | 635 | 640 | 650 | 640 | 645 | 680 | 635 | 635 | 650 | 625 | 655 | 650 | 635 | 655 | 655 | 640 | 635 | 650 | 670 | 650 | 655 | 640 | 650 | 650 | 650 | 665 | 645 | 645 | 645 | 640 | 630 | 640 | 650 | 630 | 635 | 640 | 640 |
| Température (°C) | 15 | 24 | 27 | 15 | 14 | 12 | 10 | 11 | 17 | 16 | 20 | 22 | 21 | 19 | 17 | 14 | 10 | 11 | 12 | 10 | 15 | 15 | 20 | 21 | 22 | 19 | 17 | 13 | 10 | 12 | 12 | 11 | 13 | 18 | 20 | 22 | 22 | 20 | 15 | 13 | 10 | 10 | 12 | 8 | 13 | 16 | 20 | 21 | 21 | 20 | 19 | 12 | 10 | 9 | 12 | 11 | 14 | 15 | 18 | 21 | 19 | 18 | 14 | 13 | 12 | 6 | 7 |
| Carbone organique (mg(C)/L) | 0,34 | 0,37 | 0,41 | 0,35 | 0,48 | 1,27 | 0,47 | 0,5 | 0,49 | 0,32 | – | – | 0,35 | – | 0,36 | – | – | 0,3 | 0,32 | – | – | 0,35 | – | 0,3 | – | – | 0,51 | 0,32 | – | 0,39 | 0,32 | – | – | 0,33 | – | – | 0,42 | – | – | 0,41 | – | – | 0,42 | – | – | 0,33 | – | – | 0,46 | – | – | 0,48 | – | – | 0,46 | – | – | – | – | – | – | – | 0,36 | 0,59 | 0,35 | – | – |
| Désinfection | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Chlore résiduel (mg(Cl2)/L) | 1,04 | 0,06 | 0,56 | 0,2 | 0,05 | 0,44 | 0,2 | 0,42 | 0,64 | 0,69 | 0,24 | 0,31 | 0,41 | 0,08 | 0,16 | 0,12 | 0,52 | 0,59 | 0,61 | 0,18 | 0,65 | 0,36 | 0,25 | 0,55 | 0,43 | 0,24 | 0,4 | 0,34 | 0,44 | 0,32 | 0,28 | 0,07 | 0,35 | 0,61 | 0,23 | 0,33 | 0,89 | 0,35 | 0,09 | 0,32 | 0,31 | 0,32 | 0,39 | 0,19 | 0,23 | 0,6 | 0,06 | 0,33 | 0,24 | 0,22 | 0,19 | 0,32 | 0,25 | 0,17 | 0,43 | 0,3 | 0 | 0,26 | 0,08 | 0,2 | 0,31 | 0,42 | 0,36 | 0,49 | 0,55 | 0,39 | 0,48 |
| Chlore total (mg(Cl2)/L) | 0,44 | 0,19 | 0,59 | 0,22 | 0,06 | 0,4 | 0,21 | 0,46 | 0,65 | 0,7 | 0,27 | 0,33 | 0,45 | 0,08 | 0,2 | 0,13 | 0,58 | 0,59 | 0,62 | 0,22 | 0,67 | 0,39 | 0,27 | 0,57 | 0,44 | 0,25 | 0,31 | 0,33 | 0,44 | 0,39 | 0,3 | 0,1 | 0,37 | 0,26 | 0,24 | 0,35 | 0,61 | 0,36 | 0,12 | 0,33 | 0,35 | 0,35 | 0,4 | 0,2 | 0,24 | 0,12 | 0,08 | 0,38 | 0,16 | 0,26 | 0,2 | 0,31 | 0,28 | 0,2 | 0,11 | 0,31 | 0 | 0,28 | 0,1 | 0,23 | 0,34 | 0,35 | 0,33 | 0,55 | 0,56 | 0,43 | 0,54 |
| Trihalométhanes (µg/L) | – | – | 3,5 | – | – | – | – | – | 0 | 0 | – | – | – | – | 3,7 | – | 6,4 | 0 | – | – | – | – | 2,9 | – | – | – | – | 2,9 | – | 3,1 | – | – | – | – | 3,6 | – | – | – | – | 0 | – | 7 | 0 | – | – | – | 8,2 | – | – | – | – | 0 | – | 4,4 | 0 | – | – | – | – | 2,8 | – | 3,1 | 0 | 0 | – | – | – |
| Acides haloacétiques (µg/L) | – | – | 0,9 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Métaux | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Plomb (µg/L) | – | – | 0,6 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0,6 | – | – | – | – | – | 1,3 | – | – | – | – | – | – | 0,6 | – | – | – | – | 3,1 | – | – | – | – | – | – | 2,1 | – | – | – | – | 3 | – | – | – | – | – | – | 7,6 | – | – | – | – | – | 1 | – | 0,7 | – | – | – | – | – |
| Nickel (µg/L) | – | – | 1,1 | – | – | – | – | – | – | – | – | – | – | – | 0,9 | – | 0 | – | – | – | – | – | 1,1 | – | – | – | – | – | – | 1 | – | – | – | – | – | – | – | – | – | – | – | 3,4 | – | – | – | – | 1,9 | – | – | – | – | – | – | 2,3 | – | – | – | – | – | 1,2 | – | 1 | – | – | – | – | – |
| Cuivre (mg(Cu)/L) | – | – | 0,023 | – | – | – | – | – | – | – | – | – | – | – | 0,016 | – | 0,008 | – | – | – | – | – | 0,033 | – | – | – | – | – | – | 0,012 | – | – | – | – | 0,038 | – | – | – | – | – | – | 0,018 | – | – | – | – | 0,68 | – | – | – | – | – | – | 0,16 | – | – | – | – | – | 0,018 | – | 0,044 | – | – | – | – | – |
| Cadmium (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – |
| Chrome (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – |
| Antimoine (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – |
| Fer (µg/L) | – | – | 0 | – | – | – | – | – | 0 | 0 | – | – | – | – | 0 | – | 14,5 | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | 0 | – | – | – | 0 | – | – | – | – | 0 | – | 0 | 0 | – | – | – | – | 0 | – | 0 | 0 | 0 | – | – | – |
| Pesticides | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pesticides (total) (µg/L) | – | – | 0,015 | – | – | 1,515 | – | – | 3,28 | 0,972 | – | – | – | – | 0 | 0,002 | 0 | 0,735 | 0,868 | – | 3,412 | 0,729 | 0 | 0,648 | 0,688 | – | 0,372 | 0,422 | – | 4,066 | 0,961 | – | – | 3,779 | 0 | – | 3,577 | – | – | 0,903 | – | 0 | 2,955 | – | – | 2,589 | 0 | – | 2,775 | – | 0,878 | 2,399 | – | 0 | 2,663 | – | – | 4,202 | – | 0 | – | 1,173 | 0,522 | 0,647 | – | – | – |
| Glyphosate (µg/L) | – | – | 0 | – | – | 0 | – | – | 0 | 0 | – | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | 0 | – | – | 0 | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | 0 | 0 | – | – | – |
| AMPA (µg/L) | – | – | 0 | – | – | 0 | – | – | 0 | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Dalapon (µg/L) | – | – | 0 | – | – | 0 | – | – | 0 | 0 | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Glufosinate (µg/L) | – | – | 0 | – | – | 0 | – | – | 0 | 0 | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Fosetyl (µg/L) | – | – | 0 | – | – | 0 | – | – | 0 | 0 | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Atrazine déséthyl (pire individuel) (µg/L) | – | – | 0,008 | – | – | 0,958 | – | – | Présence | 0,684 | – | – | – | – | – | – | – | 0,464 | 0,588 | – | Présence | 0,485 | – | 0,509 | 0,485 | – | 0,258 | 0,278 | – | Présence | 0,446 | – | – | Présence | – | – | Présence | – | – | 0,771 | – | – | Présence | – | – | Présence | – | – | Présence | – | 0,303 | Présence | – | – | Présence | – | – | Présence | – | – | – | 0,78 | 0,37 | 0,45 | – | – | – |
| HAP | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Benzo(a)pyrène (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – |
| HAP (4 subst.) (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | – | – | 0 | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – |