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  3. Drinking water
  1. Ilha Verde treated water
    22.211228, 113.540172
    file?p=lab/List3/5_fad5f487cfc811d6fecaeeb30caa5c8c.jpg
    <table class="table table-striped table-sm"><thead><tr><th>Latest 3 test dates</th><th>18/07/2025</th><th>17/07/2025</th><th>16/07/2025</th><th>Limit</th></tr></thead><tbody><tr><td>Free chlorine(mg/L)</td><td>0.93</td><td>1.1</td><td>0.82</td><td>-</td></tr><tr><td>pH Value(pH)</td><td>7.8</td><td>7.7</td><td>7.7</td><td>6.5-9.5</td></tr><tr><td>Chloride(mg/L)</td><td>--</td><td>16.7</td><td>--</td><td>250*</td></tr><tr><td>Total coliform(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1</td><tr><td><span class="scientificName" lang="e">Escherichia coli</span>(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1*</td><td></td></tr></tbody></table></br></br></br></br></br>
    水廠
    22.198057429, 113.54611755
  2. MSR I treated water
    22.203890, 113.557713
    file?p=lab/List3/7_5ce0377edc0ebda29a7bdb35af22323a.png
    <table class="table table-striped table-sm"><thead><tr><th>Latest 3 test dates</th><th>18/07/2025</th><th>17/07/2025</th><th>16/07/2025</th><th>Limit</th></tr></thead><tbody><tr><td>Free chlorine(mg/L)</td><td>0.91</td><td>0.97</td><td>0.95</td><td>-</td></tr><tr><td>pH Value(pH)</td><td>7.9</td><td>7.9</td><td>7.9</td><td>6.5-9.5</td></tr><tr><td>Chloride(mg/L)</td><td>--</td><td>17.6</td><td>--</td><td>250*</td></tr><tr><td>Total coliform(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1</td><tr><td><span class="scientificName" lang="e">Escherichia coli</span>(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1*</td><td></td></tr></tbody></table></br></br></br></br></br>
    水廠
    22.198057429, 113.54611755
  3. UF MSR treated water
    22.204322, 113.558938
    file?p=lab/List3/1_bba54a21478228317cd37467c382c3dd.jpg
    <table class="table table-striped table-sm"><thead><tr><th>Latest 3 test dates</th><th>18/07/2025</th><th>17/07/2025</th><th>16/07/2025</th><th>Limit</th></tr></thead><tbody><tr><td>Free chlorine(mg/L)</td><td>0.80</td><td>0.88</td><td>0.95</td><td>-</td></tr><tr><td>pH Value(pH)</td><td>8.1</td><td>8.0</td><td>7.9</td><td>6.5-9.5</td></tr><tr><td>Chloride(mg/L)</td><td>--</td><td>14.5</td><td>--</td><td>250*</td></tr><tr><td>Total coliform(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1</td><tr><td><span class="scientificName" lang="e">Escherichia coli</span>(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1*</td><td></td></tr></tbody></table></br></br></br></br></br>
    水廠
    22.198057429, 113.54611755
  1. Coloane treated water
    22.129345, 113.571218
    file?p=lab/List3/6_1f6a9fa0a6a9c8d4394621d925943f9e.JPG
    <table class="table table-striped table-sm"><thead><tr><th>Latest 3 test dates</th><th>22/12/2024</th><th>21/12/2024</th><th>20/12/2024</th><th>Limit</th></tr></thead><tbody><tr><td>Free chlorine(mg/L)</td><td>0.85</td><td>1.0</td><td>0.99</td><td>-</td></tr><tr><td>pH Value(pH)</td><td>8.0</td><td>7.9</td><td>7.9</td><td>6.5-9.5</td></tr><tr><td>Total coliform(/100mL)</td><td>Not detected</td><td>Not detected</td><td>Not detected</td><td><1</td><tr><td><span class="scientificName" lang="e">Escherichia coli</span>(/100mL)</td><td>Not detected</td><td>Not detected</td><td>Not detected</td><td><1*</td><td></td></tr></tbody></table></br></br></br></br></br>
    水廠
    22.139410, 113.563297
  2. SEAC PAI VAN Water Treatment Plant Treated Water
    22.13248, 113.56656
    file?p=lab/List3/2_6c0beec5b48f9b3b88c84661f2cb7889.jpg
    <table class="table table-striped table-sm"><thead><tr><th>Latest 3 test dates</th><th>18/07/2025</th><th>17/07/2025</th><th>16/07/2025</th><th>Limit</th></tr></thead><tbody><tr><td>Free chlorine(mg/L)</td><td>0.76</td><td>0.98</td><td>0.80</td><td>-</td></tr><tr><td>pH Value(pH)</td><td>7.9</td><td>8.0</td><td>8.0</td><td>6.5-9.5</td></tr><tr><td>Total coliform(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1</td><tr><td><span class="scientificName" lang="e">Escherichia coli</span>(/100mL)</td><td>Testing</td><td>Not detected</td><td>Not detected</td><td><1*</td><td></td></tr></tbody></table></br></br></br></br></br>
    水廠
    22.139410, 113.563297

Remarks : Limit according to "Regulations on Water Supply and Drainage in Macao”.

*Limits on E. coli and chloride in reference to Directive (EU) 2020/2184 

 
Previous water quality monitoring data is available in DSEC “Environmental Statistics”