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CRENNES · Loupfougères

SAUR FRANCE

Water safety

Water safety
ParameterUnfiltered tap waterAllowed rangeFiltered
Free Chlorinemg CL2/l0.13 (Near the limit)0.2 – 10.003
Total Chlorinemg CL2/l0.16No limit0.032

General

General
ParameterUnfiltered tap waterAllowed rangeFiltered
TemperatureC15No limit15
Hardnessmg CaCO3/l8080 – 45980
Hardness fF8No limit8
pH7.36.5 – 9.57.3
TurbidityNTU0.3≤ 40.03
ColorColor Units5≤ 155
ConductivityμS / cm204≤ 2,500204
TDSmg/l130.6estimated0 – 1,199130.6
Alkalinitymg CaCO3/l63No limit63
Bicarbonatemg HCO3/l81Sampled Apr 2026No limit81

Pathogens

Pathogens
ParameterUnfiltered tap waterAllowed rangeFiltered
ClostridiumUFC/100ml0Sampled Apr 2026≤ 00
eColiUFC/100ml0≤ 00
BacteriasNMP/100ml0≤ 00
EnterococcusUFC/100ml0≤ 00

Chemical parameters

Chemical parameters
ParameterUnfiltered tap waterAllowed rangeFiltered
Cyanide totalμg CN/l5Sampled Apr 2026≤ 500.25
Fluoridemg F/l0.076Sampled Apr 2026≤ 1.50.023
Mercuryμg Hg/l0.01Sampled Apr 2026≤ 10.001
Nitritesmg NO2/l0.01≤ 0.50.004
Nitratesmg NO3/l12≤ 503.6

Minerals

Minerals
ParameterUnfiltered tap waterAllowed rangeFiltered
Magnesiummg/l3.1Sampled Apr 2026No limit3.1
Calciummg/l25.2Sampled Apr 2026No limit25.2
Potassiummg/l0.9Sampled Apr 2026No limit0.9
Chloridemg/l14.7≤ 25014.7

Metals

Metals
ParameterUnfiltered tap waterAllowed rangeFiltered
Aluminiumμg/l69Sampled Apr 2026≤ 20069
Antimonyμg/l0.1Sampled Apr 2026≤ 50.1
Arsenicμg/l0.2Sampled Apr 2026≤ 100.1
Bariumμg/l14Sampled Apr 2026≤ 1,00014
Cadmiumμg/l0.059Sampled Apr 2026≤ 50.059
Chromiumμg/l0.5Sampled Apr 2026≤ 500.5
Ironμg/l16≤ 20016
Manganeseμg/l0.5≤ 500.5
Leadμg/lNot reported≤ 10—
Seleniumμg/l0.2Sampled Apr 2026≤ 100.2
Sodiummg/l7.7Sampled Apr 2026≤ 2007.7

Chlorine by-products

Chlorine by-products
ParameterUnfiltered tap waterAllowed rangeFiltered
Trichloroethyleneμg/l0.1Sampled Apr 2026No limit0.005
Total Trihalomethanesμg/l7.7Sampled Apr 2025≤ 1000.39

Pesticides

Pesticides
ParameterUnfiltered tap waterAllowed rangeFiltered
Chlordaneug/L0Sampled Apr 2026≤ 20
Heptachlorug/L0.001Sampled Apr 2026≤ 0.40.001
Total pesticidesug/L0Sampled Apr 2026≤ 0.50

Herbicides

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

Perfluorinated chemicals

Perfluorinated chemicals
ParameterUnfiltered tap waterAllowed rangeFiltered
PFOAug/L0.001Sampled Apr 2026No limit0.001
PFOSug/L0.002Sampled Apr 2026No limit0.002
PFNAug/L0.001Sampled Apr 2026No limit0.001
Total PFASug/L0Sampled Apr 2026≤ 0.10
PFAS 4ng/lNot reportedNo limit—
PFAS 21ng/lNot reportedNo limit—

Other

Other
ParameterUnfiltered tap waterAllowed rangeFiltered
Ammoniamg/l0.01No limit0.003
Sulfatemg/l5No limit5
Uraniumug/L0.3Sampled Apr 2026No limit0.3

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.