Drinking water quality by city
How is the water at your address?
See what public water checks found in your city: PFAS, nitrate, lead and hardness.
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Country overviews
PFAS in tap water in France 34,843 communes · 5,967 at or above 0.5 ng/L · 2,764 above 4 ng/L PFAS in tap water in Belgium 546 cities · 270 at or above 0.5 ng/L · 63 above 4 ng/L PFAS in tap water in Germany 25 cities · 16 at or above 0.5 ng/L · 8 above 4 ng/L PFAS in tap water in the United States 1,493 water systems · 354 above the 0.5 ng/L benchmark · 323 with PFOA or PFOS above the 4.0 ng/L MCL PFAS in tap water in Finland 287 cities · 158 with a PFAS result · PFAS-4 not published PFAS in tap water in Norway 357 cities · 0 with a PFAS result · PFAS-4 not published PFAS in tap water in Estonia 78 cities · 17 with a PFAS result · PFAS-4 not published PFAS in tap water in the Netherlands 89 cities · 33 at or above 0.5 ng/L · 5 above 4 ng/L
Cities with the most PFAS, compared with our benchmark
We add up the four most harmful PFAS. The bars compare that total with our 0.5 ng/L health benchmark, explained on the methodology page. How we chose 0.5 ng/L
A few large cities
Which filter against PFAS?
Compare all PFAS filters Comparison of filters checked one by one: certification, published PFOA/PFOS figure, yearly cost, where they are delivered.By region
Auvergne-Rhône-Alpes 4019 1033 above the benchmark Bourgogne-Franche-Comté 3676 761 above the benchmark Bretagne 1202 403 above the benchmark Centre-Val de Loire 1754 341 above the benchmark Corse 360 6 above the benchmark Grand Est 5106 596 above the benchmark Guadeloupe 32 Guyane 22 Hauts-de-France 3781 700 above the benchmark Île-de-France 1266 537 above the benchmark La Réunion 24 2 above the benchmark Martinique 34 Mayotte 17 Normandie 2642 503 above the benchmark Nouvelle-Aquitaine 4293 86 above the benchmark Occitanie 4443 460 above the benchmark Pays de la Loire 1225 332 above the benchmark Provence-Alpes-Côte d'Azur 945 207 above the benchmark
All departments
01 Ain 391 02 Aisne 797 2A Corse-du-Sud 124 2B Haute-Corse 236 03 Allier 317 04 Alpes-de-Haute-Provence 197 05 Hautes-Alpes 162 06 Alpes-Maritimes 163 07 Ardèche 335 08 Ardennes 446 09 Ariège 325 10 Aube 431 11 Aude 432 12 Aveyron 284 13 Bouches-du-Rhône 119 14 Calvados 525 15 Cantal 250 16 Charente 359 17 Charente-Maritime 462 18 Cher 286 19 Corrèze 277 21 Côte-d'Or 697 22 Côtes-d'Armor 344 23 Creuse 255 24 Dordogne 503 25 Doubs 562 26 Drôme 357 27 Eure 585 28 Eure-et-Loir 363 29 Finistère 277 30 Gard 350 31 Haute-Garonne 586 32 Gers 458 33 Gironde 534 34 Hérault 341 35 Ille-et-Vilaine 332 36 Indre 241 37 Indre-et-Loire 272 38 Isère 512 39 Jura 492 40 Landes 327 41 Loir-et-Cher 267 42 Loire 320 43 Haute-Loire 257 44 Loire-Atlantique 207 45 Loiret 325 46 Lot 312 47 Lot-et-Garonne 319 48 Lozère 152 49 Maine-et-Loire 175 50 Manche 445 51 Marne 610 52 Haute-Marne 424 53 Mayenne 240 54 Meurthe-et-Moselle 591 55 Meuse 493 56 Morbihan 249 57 Moselle 725 58 Nièvre 307 59 Nord 647 60 Oise 679 61 Orne 381 62 Pas-de-Calais 887 63 Puy-de-Dôme 463 64 Pyrénées-Atlantiques 545 65 Hautes-Pyrénées 468 66 Pyrénées-Orientales 226 67 Bas-Rhin 514 68 Haut-Rhin 366 69 Rhône 265 70 Haute-Saône 532 71 Saône-et-Loire 563 72 Sarthe 352 73 Savoie 273 74 Haute-Savoie 279 75 Paris 1 76 Seine-Maritime 706 77 Seine-et-Marne 507 78 Yvelines 259 79 Deux-Sèvres 252 80 Somme 771 81 Tarn 314 82 Tarn-et-Garonne 195 83 Var 153 84 Vaucluse 151 85 Vendée 251 86 Vienne 265 87 Haute-Vienne 195 88 Vosges 506 89 Yonne 423 90 Territoire de Belfort 100 91 Essonne 194 92 Hauts-de-Seine 36 93 Seine-Saint-Denis 39 94 Val-de-Marne 47 95 Val-d'Oise 183 971 Guadeloupe 32 972 Martinique 34 973 Guyane 22 974 La Réunion 24 976 Mayotte 17
Belgium (546)
Flanders (VMM, 2024 annual figures per supply area) and Wallonia (SPW PFAS monitoring, sample by sample), municipality by municipality. Brussels follows. PFAS in tap water in Belgium
Provinces
Antwerp 67 55 above the benchmark Flemish Brabant 63 41 above the benchmark Walloon Brabant 27 12 above the benchmark West Flanders 62 45 above the benchmark East Flanders 55 52 above the benchmark Hainaut 69 18 above the benchmark Liège 84 6 above the benchmark Limburg 38 23 above the benchmark Luxembourg 43 3 above the benchmark Namur 38 9 above the benchmark
A few large cities
Antwerpen
565,615 Population above our health benchmark
Gent
274,042 Population above our health benchmark
Charleroi
206,900 Population above our health benchmark
Liège
198,102 Population PFAS-4 not detected
Brugge
120,458 Population above our health benchmark
Namur
115,457 Population PFAS-4 not detected
Germany (25)
25 cities and municipalities whose utility publishes PFAS per waterworks: annual figures and recent analyses from the utilities, plus the official monitoring of the Altötting district. More cities follow as their utilities publish values. PFAS in tap water in Germany
Federal states
Hamburg 1 North Rhine-Westphalia 4 3 above the benchmark Baden-Württemberg 2 2 above the benchmark Bavaria 16 9 above the benchmark Berlin 1 1 above the benchmark Saxony 1 1 above the benchmark
A few large cities
Berlin
3,685,265 Population above our health benchmark
Hamburg
1,862,565 Population PFAS-4 not detected
Köln
1,024,621 Population above our health benchmark
Leipzig
611,850 Population above our health benchmark
Nürnberg
529,508 Population above our health benchmark
Duisburg
502,270 Population above our health benchmark
Finland (287)
158 of 287 municipalities with a published PFAS result; PFAS-4 is not published in Finland. PFAS in tap water in Finland
Regions (maakunta)
Uusimaa 26 10 with PFAS result Southwest Finland 27 5 with PFAS result Satakunta 16 8 with PFAS result Kanta-Häme 10 7 with PFAS result Pirkanmaa 22 14 with PFAS result Päijät-Häme 10 9 with PFAS result Kymenlaakso 6 4 with PFAS result South Karelia 9 6 with PFAS result South Savo 11 2 with PFAS result North Savo 18 8 with PFAS result North Karelia 13 6 with PFAS result Central Finland 22 11 with PFAS result South Ostrobothnia 18 10 with PFAS result Ostrobothnia 14 13 with PFAS result Central Ostrobothnia 8 4 with PFAS result North Ostrobothnia 29 18 with PFAS result Kainuu 8 5 with PFAS result Lapland 20 18 with PFAS result
A few large cities
Norway (357)
0 of 357 municipalities with a published PFAS result; PFAS-4 is not published in Norway. PFAS in tap water in Norway
Counties (fylke)
Oslo 1 Rogaland 23 Møre og Romsdal 27 Nordland 41 Østfold 12 Akershus 21 Buskerud 18 Innlandet 46 Vestfold 6 Telemark 17 Agder 25 Vestland 43 Trøndelag 38 Troms 21 Finnmark 18
A few large cities
Estonia (78)
17 of 78 municipalities with a published PFAS result; PFAS-4 is not published in Estonia. PFAS in tap water in Estonia
Counties (maakond)
Harju County 16 9 with PFAS result Hiiu County 1 Ida-Viru County 7 1 with PFAS result Jõgeva County 3 Järva County 3 1 with PFAS result Lääne County 3 Lääne-Viru County 8 Põlva County 3 Pärnu County 7 5 with PFAS result Rapla County 4 Saare County 3 1 with PFAS result Tartu County 8 Valga County 3 Viljandi County 4 Võru County 5
A few large cities
Tallinn
452,563 Population PFAS-4 not detected
Tartu linn
99,900 Population no PFAS result yet
Pärnu linn
52,198 Population PFAS-4 not detected
Narva linn
51,411 Population no PFAS result yet
Kohtla-Järve linn
32,368 Population no PFAS result yet
Saaremaa vald
29,869 Population PFAS result available
Netherlands (89)
34 of 89 municipalities with a published PFAS-4 value. PFAS in tap water in the Netherlands
Provinces
North Holland 5 5 above the benchmark South Holland 15 15 above the benchmark Zeeland 13 12 above the benchmark North Brabant 56 1 above the benchmark
A few large cities
Amsterdam
941,927 Population above our health benchmark
Rotterdam
673,804 Population above our health benchmark
Eindhoven
249,783 Population PFAS result available
Tilburg
230,746 Population PFAS result available
Breda
190,204 Population PFAS result available
's-Hertogenbosch
162,295 Population PFAS result available
United States (1493)
1,493 community water systems in 5 states with EPA's PFAS measurements (UCMR 5, 2023 to 2025): 354 with at least one of the four most closely watched PFAS quantified, compared with our 0.5 ng/L benchmark and with the 4.0 ng/L federal MCL for PFOA and PFOS. PFAS in tap water in the United States
Email alerts for US water systems start once our US postal address is published (CAN-SPAM). We collect nothing yet; every system page is updated as new results are published.
States
New Jersey 245 119 above the benchmark Pennsylvania 360 93 above the benchmark Michigan 307 7 above the benchmark Massachusetts 261 94 above the benchmark New York 320 41 above the benchmark
Largest water systems
New York City System
8,271,000 Population PFAS-4 not detected
Philadelphia Water Department
1,600,000 Population above our health benchmark
Suffolk County Water Authority
1,100,000 Population above our health benchmark
Aqua PA Main System
822,600 Population above our health benchmark
Veolia Water New Jersey Hackensack
792,713 Population above our health benchmark
PA Amer Water CO-Pittsburgh
686,000 Population PFAS-4 not detected
The water report for your city
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Choose my cityThis site is a data project, not an official source. If in doubt, check with your water supplier or local authority.