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ISNEAUVILLE · Bois-Guillaume

VEOLIA CGE

Water safety

Water safety
ParameterUnfiltered tap waterAllowed rangeFiltered
Free Chlorinemg CL2/l0.3Sampled Jul 20260.2 – 10.006
Total Chlorinemg CL2/l0.34Sampled Jul 2026No limit0.068

General

General
ParameterUnfiltered tap waterAllowed rangeFiltered
TemperatureC21Sampled Jul 2026No limit21
Hardnessmg CaCO3/l296Sampled Jul 202680 – 459296
Hardness fF29.6Sampled Jul 2026No limit29.6
pH7.1Sampled Jul 20266.5 – 9.57.1
TurbidityNTU0.44Sampled Jul 2026≤ 40.044
ConductivityμS / cm637Sampled Jul 2026≤ 2,500637
TDSmg/l407.7Sampled Jul 2026estimated0 – 1,199407.7
Alkalinitymg CaCO3/l282Sampled Jul 2026No limit282
Bicarbonatemg HCO3/l316Sampled Jan 2026No limit316

Pathogens

Pathogens
ParameterUnfiltered tap waterAllowed rangeFiltered
ClostridiumUFC/100ml0Sampled Jul 2026≤ 00
eColiUFC/100ml0Sampled Jul 2026≤ 00
BacteriasNMP/100ml0Sampled Jul 2026≤ 00
EnterococcusUFC/100ml0Sampled Jul 2026≤ 00

Chemical parameters

Chemical parameters
ParameterUnfiltered tap waterAllowed rangeFiltered
Cyanide totalμg CN/l10Sampled Jan 2026≤ 500.5
Fluoridemg F/l0.1Sampled Jan 2026≤ 1.50.03
Mercuryμg Hg/l0.05Sampled Jan 2026≤ 10.005
Nitritesmg NO2/l0.01Sampled Jul 2026≤ 0.50.004
Nitratesmg NO3/l24.3Sampled Jul 2026≤ 507.29

Minerals

Minerals
ParameterUnfiltered tap waterAllowed rangeFiltered
Magnesiummg/l5.1Sampled Jan 2026No limit5.1
Calciummg/l117Sampled Jan 2026No limit117
Potassiummg/l1.6Sampled Jan 2026No limit1.6
Chloridemg/l17.2Sampled Jul 2026≤ 25017.2

Metals

Metals
ParameterUnfiltered tap waterAllowed rangeFiltered
Aluminiumμg/l2.8Sampled Jan 2026≤ 2002.8
Antimonyμg/l0.5Sampled Jan 2026≤ 50.5
Arsenicμg/l0.5Sampled Jan 2026≤ 100.25
Bariumμg/l29.6Sampled Jan 2026≤ 1,00029.6
Cadmiumμg/l0.1Sampled Jan 2026≤ 50.1
Chromiumμg/l1.1Sampled Jan 2026≤ 501.1
Copperμg/l63.4≤ 2,0003.17
Ironμg/l5Sampled Jan 2026≤ 2005
Manganeseμg/l0.5Sampled Jan 2026≤ 500.5
Leadμg/l1.4≤ 100.07
Nickelμg/l0.5≤ 200.5
Seleniumμg/l2Sampled Jan 2026≤ 102
Sodiummg/l7.7Sampled Jan 2026≤ 2007.7

Chlorine by-products

Chlorine by-products
ParameterUnfiltered tap waterAllowed rangeFiltered
Trichloroethyleneμg/l0.05Sampled Jan 2026No limit0.003
Total Trihalomethanesμg/l8.2Sampled Jan 2026≤ 1000.41

Haloacetic acids

Haloacetic acids
ParameterUnfiltered tap waterAllowed rangeFiltered
Total haloacetic acidsμg/l1.17Sampled Jan 2026≤ 600.059

Pesticides

Pesticides
ParameterUnfiltered tap waterAllowed rangeFiltered
Heptachlorug/L0.005Sampled Jan 2026≤ 0.40.005
Total pesticidesug/L0.26Sampled Jan 2026≤ 0.50.26

Herbicides

Herbicides
ParameterUnfiltered tap waterAllowed rangeFiltered
D 2 4ug/L0.02Sampled Jan 2026≤ 700.02
Atrazineug/L0.01Sampled Jan 2026≤ 30.01

Perfluorinated chemicals

Perfluorinated chemicals
ParameterUnfiltered tap waterAllowed rangeFiltered
PFOAug/L0.001Sampled Jan 2026No limit0.001
PFOSug/L0.001Sampled Jan 2026No limit0.001
PFNAug/L0.001Sampled Jan 2026No limit0.001
Total PFASug/L0.002Sampled Jan 2026≤ 0.10
PFAS 4ng/lNot reportedNo limit—
PFAS 21ng/lNot reportedNo limit—

Other

Other
ParameterUnfiltered tap waterAllowed rangeFiltered
Ammoniamg/l0.02Sampled Jul 2026No limit0.006
Sulfatemg/l8.94Sampled Jul 2026No limit8.94

Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.