Votre eau est potable et respecte toutes les normes sanitaires en vigueur.
Analyse du 04/08/2026 · ORLEANS METROPOLE · Réseau 045000379
L'eau du robinet à La Chapelle-Saint-Mesmin en bref
La dernière analyse de l'eau du robinet à La Chapelle-Saint-Mesmin, réalisée le 04/08/2026 (distributeur : ORLEANS METROPOLE), montre une eau conforme aux limites et références de qualité suivies. Sur les 12 derniers mois analysés (depuis septembre 2025), on compte 7 conformes, 4 avec un point de vigilance et 1 non conformes. La teneur en nitrates est modérée (38,6 mg/L pour une limite de 50 mg/L). Parmi les autres paramètres réglementés, le plus proche de sa limite est Nitrates + Nitrites (77 % de la limite). Dans le département Loiret (45), 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 | Nov 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 | 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 | 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 | 0 | 0 |
| Entérocoques (n/(100mL)) | 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 | 0 | 0 | 0 |
| Coliformes (n/(100mL)) | 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 | 0 | 0 | 0 |
| Inorganiques | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Nitrates (mg/L) | 38,6 | 47,3 | 43,3 | 26,6 | 27,9 | 29,6 | 23 | 26 | 35 | 43 | 36 | 36 | 45 | 29 | 44 | 25 | 27 | 47 | 40 | 42 | 43 | 46 | 28 | 45 | 41 | 36 | 40 | 40 | 38 | 39 | 29 | 40 | 35 | 42 | 28 | 41 | 35 | 42 | 44 | – | 37 | – | 37 | – | 34 | – | – | 36 | – | 43 | – | – | 41 | – | 41 | – | 35 | – | – | 41 | – | 45 | – | – | 32 | – | 38 |
| 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 |
| Nitrates + Nitrites (mg/L) | 0,77 | 0,95 | 1 | 0,53 | 0,56 | 0,59 | 0,46 | 0,52 | – | 0,86 | – | – | 0,9 | – | 0,88 | – | – | 0,94 | – | 0,84 | – | 0,92 | – | – | 0,8 | – | 0,8 | – | – | 0,78 | – | 0,8 | – | 0,84 | – | – | 0,48 | – | 0,88 | – | 0,74 | – | 0,74 | – | 0,68 | – | – | 0,72 | – | 0,86 | – | – | 0,82 | – | 0,82 | – | 0,7 | – | – | 0,82 | – | 0,9 | – | – | 0,64 | – | 0,76 |
| Ammonium (mg/L) | 0 | 0 | 0 | 0 | 0,02 | 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 |
| pH (unité pH) | 7,2 | 7,5 | 7,23 | 7,1 | 7,2 | 7,1 | 7,3 | 7,1 | 7,16 | 7,42 | 7,36 | 7,25 | 7,2 | 7,28 | 7,2 | 7,43 | 7,19 | 7,7 | 7,29 | 7,4 | 7,16 | 7,3 | 7,25 | 7,36 | 7,81 | 7,33 | 7,33 | 7,36 | 7,3 | 7,32 | 7,28 | 7,3 | 7,36 | 7,44 | 7,26 | 7,24 | 7,2 | 7,31 | 7,12 | 7,24 | 7,25 | 7,34 | 7,2 | 7,35 | 7,44 | 7,28 | 7,31 | 7,39 | 7,23 | 7,2 | 7,25 | 7,52 | 7,35 | 7,33 | 7,4 | 7,25 | 7,35 | 7,45 | 7,26 | 7,3 | 7,33 | 7,44 | 7,49 | 7,37 | 7,4 | 7,36 | 7,37 |
| Turbidité (NFU) | 0 | 0 | 0,11 | 0,15 | 0,12 | 0 | 0 | 0 | 0,16 | 0,16 | 0,13 | 0,23 | 0,19 | 0,18 | 0,41 | 0 | 0,18 | 0 | 0 | 0,14 | 0 | 0,23 | 0,1 | 0 | 0,21 | 0,13 | 0,16 | 0 | 0 | 0,12 | 0 | 0,19 | 0,68 | 0,19 | 0,17 | 0,1 | 0,57 | 0 | 0,14 | 0,31 | 0,1 | 0,21 | 0,14 | 0 | 0 | 0,31 | 0,2 | 0,1 | 0,21 | 0 | 0 | 0 | 0 | 0,13 | 0,14 | 0,18 | 0,14 | 0 | 0,24 | 0,31 | 0,14 | 0,32 | 0,14 | 0 | 0,25 | 0,12 | 0,15 |
| Conductivité (µS/cm) | 650 | 653 | 641 | 613 | 650 | 629 | 570 | 644 | 626 | 596 | 488 | 643 | 609 | 693 | 568 | 631 | 630 | 643 | 611 | 639 | 615 | 626 | 638 | 642 | 362 | 590 | 640 | 617 | 632 | 631 | 641 | 645 | 622 | 625 | 654 | 609 | 605 | 626 | 633 | 602 | 630 | 652 | 624 | 640 | 658 | 644 | 640 | 645 | 621 | 632 | 635 | 650 | 641 | 637 | 636 | 632 | 652 | 645 | 652 | 665 | 599 | 636 | 645 | 635 | 604 | 621 | 625 |
| Température (°C) | 21 | 19,6 | 19,4 | 16,6 | 13,2 | 15,6 | 13,3 | 10,1 | 15,2 | 14,8 | 16,7 | 22,4 | 22,2 | 22,2 | 19,8 | 18,6 | 15,1 | 13,3 | 14 | 13,1 | 13,8 | 15 | 18,7 | 21,7 | 23,7 | 22,8 | 17,2 | 16,3 | 17,1 | 13,2 | 12,7 | 14,1 | 14,5 | 15,8 | 19,5 | 19,5 | 20,3 | 23,8 | 30,2 | 16,1 | 13,4 | 13,6 | 14,2 | 16,5 | 17,7 | 19,6 | 20,1 | 23,8 | 22,9 | 19 | 19,5 | 16,2 | 13,2 | 13,6 | 14,7 | 15 | 16,4 | 20,1 | 21,6 | 19,6 | 23,5 | 19,8 | 16,4 | 15,3 | 13,5 | 13 | 13,1 |
| Carbone organique (mg(C)/L) | 0,46 | 0,39 | 0,37 | 0,38 | 0,42 | 0,34 | 0,27 | 0,35 | – | 0,35 | – | – | 0,34 | – | 0,32 | – | – | 0,48 | – | 0,21 | – | 0,42 | – | – | 0,42 | – | 0,47 | – | – | 0,37 | – | 0,23 | – | 0,25 | – | – | 0,41 | – | 0,3 | – | 0,3 | – | 0,27 | – | 0,47 | – | – | 0,35 | – | 0,3 | – | – | 0,27 | – | 0,3 | – | 0,35 | – | – | 0,32 | – | 0,25 | – | – | 0,2 | – | 0,3 |
| Désinfection | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Chlore résiduel (mg(Cl2)/L) | 0,38 | 0,63 | 0,44 | 0,2 | 0,22 | 0,31 | 0,29 | 0,24 | 0,36 | 0,45 | 0,31 | 0,33 | 0,4 | 0,35 | 0,44 | 0,29 | 0,4 | 0,39 | 0,37 | 0,32 | 0,33 | 0,43 | 0,38 | 0,28 | 0,45 | 0,25 | 0,35 | 0,06 | 0,33 | 0,43 | 0,4 | 0,31 | 0,34 | 0,32 | 0,22 | 0,36 | 0,38 | 0,25 | 0,45 | 0,29 | 0,33 | 0,28 | 0,46 | 0,37 | 0,41 | 0,3 | 0,31 | 0,45 | 0,38 | 0,48 | 0,35 | 0,3 | 0,41 | 0,33 | 0,45 | 0,43 | 0,46 | 0,25 | 0,22 | 0,38 | 0,17 | 0,42 | 0,18 | 0,19 | 0,37 | 0,21 | 0,32 |
| Chlore total (mg(Cl2)/L) | 0,4 | 0,64 | 0,47 | 0,23 | 0,22 | 0,32 | 0,29 | 0,24 | 0,18 | 0,3 | 0,35 | 0,29 | 0,41 | 0,29 | 0,35 | 0,32 | 0,42 | 0,48 | 0,41 | 0,38 | 0,3 | 0,38 | 0,42 | 0,28 | 0,05 | 0,28 | 0,36 | 0,09 | 0 | 0,36 | 0,43 | 0,34 | 0,34 | 0,26 | 0,22 | 0,26 | 0,31 | 0,19 | 0,21 | 0,32 | 0,35 | 0,26 | 0,36 | 0,4 | 0,43 | 0,31 | 0,08 | 0,06 | 0,43 | 0,5 | 0,35 | 0,35 | 0,37 | 0,37 | 0,05 | 0,5 | 0,26 | 0,29 | 0,08 | 0,43 | 0,18 | 0,28 | 0,19 | 0,26 | 0,38 | 0,23 | 0,35 |
| Trihalométhanes (µg/L) | – | 1,04 | 0,87 | – | – | – | – | – | – | – | – | – | 1,1 | – | 2,68 | – | – | – | – | 3,7 | – | – | – | – | 0,51 | – | 3,7 | – | – | – | – | 3,83 | – | – | – | – | 0,21 | – | 3,3 | – | 1,32 | – | 4,3 | – | – | – | – | 0,27 | – | 4,37 | – | – | 0 | – | 1,06 | – | – | – | – | 0,31 | – | 3,3 | – | – | 0,38 | – | 2,17 |
| Acides haloacétiques (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Métaux | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Plomb (µg/L) | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | 0 |
| Nickel (µg/L) | – | – | 6 | – | – | 0 | – | – | – | – | – | – | – | – | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | – |
| Cuivre (mg(Cu)/L) | – | – | 0 | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0,058 | – | – | – | – | – | – | – | – | 0,045 |
| 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 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 |
| Pesticides | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pesticides (total) (µg/L) | 0,05 | 0,116 | 0,051 | 0,059 | 0,067 | 0,074 | 0,056 | 0,075 | 0,103 | 0,161 | 0,122 | 0,123 | 0,223 | 0,066 | 0,183 | 0,066 | 0,068 | 0,18 | 0,182 | 0,169 | 0,138 | 0,149 | 0,07 | 0,18 | 0,153 | 0,043 | 0,161 | 0,124 | 0,044 | 0,365 | 0,073 | 0,391 | 0,097 | 0,115 | 0,058 | 0,102 | 0,128 | 0,098 | 0,131 | 0,13 | 0,114 | 0,083 | 0,096 | 0,136 | 0,071 | 0,072 | 0,082 | 0,289 | 0,059 | 0,132 | 0,075 | 0,172 | 0,107 | 0,052 | 0,145 | 0,148 | 0,17 | 0,155 | 0,134 | 0,176 | 0,052 | 0,161 | 0,083 | 0,078 | 0,085 | 0,102 | 0,131 |
| Glyphosate (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | 0 | – | 0 | – | – | – | – | 0 | – | 0 | – | – | 0 | – | 0 | – | – | – | – | 0 | – | 0 | – | – | 0 | – | 0 |
| AMPA (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Glufosinate (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | 0 | – | 0 | – | – | – | – | 0 | – | 0 | – | – | 0 | – | 0 | – | – | – | – | 0 | – | 0 | – | – | 0 | – | 0 |
| Fosetyl (µg/L) | – | – | 0 | – | – | – | – | – | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | – | – | – | 0 | – | – | – | – | 0 | – | 0 | – | 0 | – | 0 | – | – | – | – | 0 | – | 0 | – | – | 0 | – | 0 | – | – | – | – | – | – | – | – | – | – | – | – |
| Atrazine déséthyl (pire individuel) (µg/L) | 0,044 | 0,069 | 0,031 | 0,053 | 0,061 | 0,062 | 0,048 | 0,067 | 0,065 | 0,111 | 0,082 | 0,08 | 0,166 | 0,057 | 0,096 | 0,056 | 0,058 | 0,123 | 0,132 | 0,115 | 0,089 | 0,109 | 0,063 | 0,111 | 0,104 | 0,037 | 0,115 | 0,101 | 0,044 | 0,28 | 0,179 | 0,278 | 0,079 | 0,098 | 0,051 | 0,088 | 0,09 | 0,089 | 0,048 | 0,112 | 0,093 | 0,067 | 0,079 | 0,07 | 0,058 | 0,046 | 0,04 | 0,128 | 0,051 | 0,069 | 0,048 | 0,093 | 0,063 | 0,044 | 0,084 | 0,095 | 0,104 | 0,088 | 0,084 | 0,104 | 0,043 | 0,1 | 0,069 | 0,064 | 0,07 | 0,068 | 0,068 |
| 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 |