Drinking water quality, South Holland

15 cities covered
15 with a PFAS-4 result

15 of the 15 municipalities in South Holland have a quantified PFAS figure, published by Evides Waterbedrijf. Newest result: 31 August 2026.

For comparison, RIVM advises 4.4 ng/L PFOA equivalents. That's a weighted sum, a different measure from our sum of four PFAS (PFOA, PFOS, PFNA, PFHxS) with its 0.5 ng/L benchmark.

Highest published values

Goeree-Overflakkee: 3 ng/L (PFAS-4, 31 August 2026)
Albrandswaard: 2 ng/L (PFAS-4, 31 August 2026)
Barendrecht: 2 ng/L (PFAS-4, 31 August 2026)
Delft: 2 ng/L (PFAS-4, 31 August 2026)
Hoeksche Waard: 2 ng/L (PFAS-4, 31 August 2026)

Lowest quantified values

Dordrecht: 1.3 ng/L (PFAS-4, 31 August 2026)
Schiedam: 1.7 ng/L (PFAS-4, 31 August 2026)
Capelle aan den IJssel: 1.7 ng/L (PFAS-4, 31 August 2026)
Westland: 2 ng/L (PFAS-4, 31 August 2026)
Voorne aan Zee: 2 ng/L (PFAS-4, 31 August 2026)

Above our benchmark, ranked by PFAS-4

Goeree-Overflakkee

52,798 Population3 ng/L

Rotterdam

673,804 Population2 ng/L

Westland

118,874 Population2 ng/L

Delft

110,089 Population2 ng/L

Hoeksche Waard

91,445 Population2 ng/L

Nissewaard

89,112 Population2 ng/L

Vlaardingen

77,480 Population2 ng/L

Voorne aan Zee

75,012 Population2 ng/L

Barendrecht

48,701 Population2 ng/L

Maassluis

37,125 Population2 ng/L

Albrandswaard

26,559 Population2 ng/L

Midden-Delfland

19,355 Population2 ng/L

Schiedam

81,931 Population1.7 ng/L

Capelle aan den IJssel

69,698 Population1.7 ng/L

Dordrecht

122,991 Population1.3 ng/L

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This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.