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SEM MOYENNE VALLEE GIER DORLAY · Saint-Romain-en-Jarez

SAUR

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	0.15	No limit	0.03

General

General
Parameter	Unfiltered tap water	Allowed range	Filtered
TemperatureC	20.7	No limit	20.7
Hardnessmg CaCO3/l	105.8	80 – 459	105.8
Hardness fF	10.6	No limit	10.6
pH	8.2	6.5 – 9.5	8.2
TurbidityNTU	0.1	≤ 4	0.01
ColorColor Units	5	≤ 15	5
ConductivityμS / cm	251	≤ 2,500	251
TDSmg/l	160.6estimated	0 – 1,199	160.6
Alkalinitymg CaCO3/l	91.3	No limit	91.3

Pathogens

Pathogens
Parameter	Unfiltered tap water	Allowed range	Filtered
ClostridiumUFC/100ml	0	≤ 0	0
eColiUFC/100ml	0	≤ 0	0
BacteriasNMP/100ml	0	≤ 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	4.7	≤ 50	1.41

Minerals

Minerals
Parameter	Unfiltered tap water	Allowed range	Filtered
Magnesiummg/l	1.3	No limit	1.3
Calciummg/l	40.2	No limit	40.2
Potassiummg/l	1.3Sampled Jul 2026	No limit	1.3
Chloridemg/l	15.2	≤ 250	15.2

Metals

Metals
Parameter	Unfiltered tap water	Allowed range	Filtered
Arsenicμg/l	Not reported	≤ 10	—
Ironμg/l	10	≤ 200	10
Leadμg/l	Not reported	≤ 10	—
Sodiummg/l	5.1Sampled Jul 2026	≤ 200	5.1

Chlorine by-products

Chlorine by-products
Parameter	Unfiltered tap water	Allowed range	Filtered
Total Trihalomethanesμg/l	47.6	≤ 100	2.38

Haloacetic acids

Haloacetic acids
Parameter	Unfiltered tap water	Allowed range	Filtered
Total haloacetic acidsμg/l	3.6Sampled Jul 2026	≤ 60	0.18

Pesticides

Pesticides
Parameter	Unfiltered tap water	Allowed range	Filtered
Heptachlorug/L	0.005Sampled Jul 2026	≤ 0.4	0.005
Total pesticidesug/L	0.01Sampled Jul 2026	≤ 0.5	0.01

Herbicides

Herbicides
Parameter	Unfiltered tap water	Allowed range	Filtered
D 2 4ug/L	0.02Sampled Jul 2026	≤ 70	0.02
Atrazineug/L	0.005Sampled Jul 2026	≤ 3	0.005

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	8	No limit	8

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.