RESERVOIRS FRETIERE BEAULIEU · Les Lucs-sur-Boulogne
STGS
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.05 ● (Near the limit)
0.2 – 1
0.001 ▲
Total Chlorinemg CL2/l
0.17
No limit
0.034
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
27.8
No limit
27.8
Hardnessmg CaCO3/l
137
80 – 459
137
Hardness fF
13.7
No limit
13.7
pH
8
6.5 – 9.5
8
TurbidityNTU
0.51
≤ 4
0.051
ColorColor Units
3
≤ 15
3
ConductivityμS / cm
422
≤ 2,500
422
TDSmg/l
270.1estimated
0 – 1,199
270.1
Alkalinitymg CaCO3/l
73
No limit
73
Pathogens
Pathogens
Parameter
Unfiltered tap water
Allowed range
Filtered
ClostridiumUFC/100ml
0
≤ 0
0
eColiUFC/100ml
0
≤ 0
0
BacteriasNMP/100ml
0Sampled Jul 2026
≤ 0
0
EnterococcusUFC/100ml
0
≤ 0
0
Chemical parameters
Chemical parameters
Parameter
Unfiltered tap water
Allowed range
Filtered
Mercuryμg Hg/l
Not reported
≤ 1
—
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
3.4
≤ 50
1.02
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
7.44
No limit
7.44
Calciummg/l
42.8
No limit
42.8
Chloridemg/l
55
≤ 250
55
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
10Sampled Jun 2026
≤ 200
10
Antimonyμg/l
0.5Sampled Oct 2025
≤ 5
0.5
Arsenicμg/l
Not reported
≤ 10
—
Cadmiumμg/l
0.5Sampled Oct 2025
≤ 5
0.5
Chromiumμg/l
0.5Sampled Oct 2025
≤ 50
0.5
Copperμg/l
26Sampled Oct 2025
≤ 2,000
1.3
Ironμg/l
225 ● (Near the limit)
≤ 200
225 ●
Manganeseμg/l
16.5
≤ 50
16.5
Leadμg/l
0.5Sampled Oct 2025
≤ 10
0.025
Nickelμg/l
5Sampled Oct 2025
≤ 20
5
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Total Trihalomethanesμg/l
30
≤ 100
1.5
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
0
≤ 60
0
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
Total PFASug/L
Not reported
≤ 0.1
—
PFAS 4ng/l
Not reported
No limit
—
PFAS 21ng/l
Not reported
No limit
—
Other
Other
Parameter
Unfiltered tap water
Allowed range
Filtered
Ammoniamg/l
0.01
No limit
0.003
Sulfatemg/l
45
No limit
45
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.
