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Rheoliadau Cyflenwadau Dŵr Preifat (Cymru) 2017
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RHAN 1Monitro ar gyfer paramedrau Grŵp A
Samplu
1.—(1) Rhaid i awdurdod lleol fonitro ar gyfer paramedrau Grŵp A yn unol â’r Rhan hon.
(2) Ystyr “monitro ar gyfer paramedrau Grŵp A” yw samplu ar gyfer pob paramedr a restrir yng ngholofn 1 o Dabl 1 o dan yr amgylchiadau a restrir yn y cofnod cyfatebol ar gyfer y paramedr hwnnw yng ngholofn 2 o’r Tabl hwnnw er mwyn—
(a)canfod pa un a yw’r dŵr yn cydymffurfio â’r crynodiadau neu’r gwerthoedd yn Atodlen 1 ai peidio;
(b)darparu gwybodaeth am ansawdd organoleptig a microbiolegol y dŵr; ac
(c)cadarnhau pa mor effeithiol fu’r driniaeth a roddwyd i’r dŵr, gan gynnwys y diheintio.
Tabl 1
Paramedrau Grŵp A
Paramedrau | Amgylchiadau |
|---|---|
| Alwminiwm | Os y’i defnyddir fel cemegyn trin dŵr |
| Amoniwm | Os defnyddir cloramineiddio |
| Clostridium perfringens (gan gynnwys sborau) | Pan fo’r dŵr yn tarddu o ddyfroedd wyneb, neu y dylanwedir arno gan ddyfroedd wyneb |
| Bacteria colifform | Ym mhob cyflenwad |
| Cyfrifau cytrefi | Ym mhob cyflenwad |
| Lliw | Ym mhob cyflenwad |
| Dargludedd | Ym mhob cyflenwad |
| Escherichia coli (E. coli) | Ym mhob cyflenwad |
| Crynodiad ïonau hydrogen | Ym mhob cyflenwad |
| Haearn | Os y’i defnyddir fel cemegyn trin dŵr |
| Manganîs | Pan fo’r dŵr yn tarddu o ddyfroedd wyneb, neu y dylanwedir arno gan ddyfroedd wyneb |
| Nitrad | Os defnyddir cloramineiddio |
| Nitraid | Os defnyddir cloramineiddio |
| Arogl | Ym mhob cyflenwad |
| Pseudomonas aeruginosa | Yn achos dŵr mewn poteli neu gynwysyddion yn unig |
| Blas | Ym mhob cyflenwad |
| Cymylogrwydd | Ym mhob cyflenwad |
Amlder samplu
2. Rhaid cyflawni gwaith samplu ar gyfer paramedrau Grŵp A mor aml ag a bennir yn Nhabl 2.
Tabl 2
Amlder samplu ar gyfer paramedrau Grŵp A
| Cyfaint m3/diwrnod | Amlder samplu fesul blwyddyn |
|---|---|
| ≤ 10 | 1 |
| ˃ 10 ≤ 100 | 2 |
| ˃ 100 ≤ 1,000 | 4 |
| ˃ 1,000 ≤ 2,000 | 10 |
| ˃ 2,000 ≤ 3,000 | 13 |
| ˃ 3,000 ≤ 4,000 | 16 |
| ˃ 4,000 ≤ 5,000 | 19 |
| ˃ 5,000 ≤ 6,000 | 22 |
| ˃ 6,000 ≤ 7,000 | 25 |
| ˃ 7,000 ≤ 8,000 | 28 |
| ˃ 8,000 ≤ 9,000 | 31 |
| ˃ 9,000 ≤ 10,000 | 34 |
| ˃ 10,000 | 4 + 3 am bob 1,000 m3/diwrnod o gyfanswm y cyfaint (gan dalgrynnu i fyny i’r lluosrif agosaf o 1,000 m3/diwrnod) |
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