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- Latest available (Revised) - Welsh
- Original (As made) - English
- Original (As made) - Welsh
Rheoliadau Cyflenwadau Dŵr Preifat (Cymru) 2010
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RHAN 2Paramedrau dangosyddion
TABL C
Crynodiadau, gwerthoedd neu gyflyrau rhagnodedig
| Paramedrau | Crynodiad neu werth uchaf neu gyflwr (oni ddatgenir yn wahanol) | Unedau mesur |
|---|---|---|
(i) Ni ddylai'r dŵr fod yn ymosodol. | ||
(ii) Heb gynnwys tritiwm, potasiwm-40, radon na chynhyrchion dadfeilio radon. | ||
(iii) Yn achos trin dŵr wyneb yn unig, neu ddŵr daear y dylanwadwyd arno gan ddŵr wyneb | ||
| Amoniwm | 0.50 | mg/l |
| Clorid(i) | 250 | mg/l |
| Clostridium perfringens | ||
| (gan gynnwys sborau) | 0 | Nifer/100ml |
| Bacteria colifform | 0 | Nifer/100ml |
| (Nifer/250ml yn achos dŵr a roddir mewn poteli neu gynwysyddion) | ||
| Cyfrifau cytrefi | Dim newid annormal | Nifer/1ml ar 22°C |
| Dim newid annormal | Nifer/1ml ar 37°C | |
| Dargludedd(i) | 2500 | μS/cm ar 20°C |
| Ïonau hydrogen | 9.5 (gwerth uchaf) | gwerth pH |
| 6.5 (gwerth isaf) (yn achos dŵr llonydd a roddir mewn poteli neu gynwysyddion y gwerth isaf yw 4.5) | gwerth pH | |
| Sylffad(i) | 250 | mg/l |
| Cyfanswm dos dynodol (ar gyfer ymbelydredd)(ii) | 0.10 | mSv/blwyddyn |
| Cyfanswm carbon organig (CCO) | Dim newid annormal | mgC/l |
| Tritiwm | ||
| (ar gyfer ymbelydredd) | 100 | Bq/l |
| Cymylogrwydd(iii) | 1 | NTU |
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