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Rheoliadau Cyflenwadau Dŵr Preifat (Cymru) 2010
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Rheoliadau 4, 10, 15 ac 17
ATODLEN 1Crynodiadau neu Werthoedd
RHAN 1Iachusrwydd
TABL A: PARAMEDRAU MICROBIOLEGOL
Crynodiadau a gwerthoedd rhagnodedig
| Paramedrau | Crynodiad neu werth uchaf | Unedau mesur |
|---|---|---|
| Escherichia coli (E. coli) | 0 | Nifer/100ml |
| Enterococi | 0 | Nifer/100ml |
| Yn achos dŵr mewn poteli neu gynwysyddion : | ||
| Escherichia coli (E. coli) | 0 | Nifer/250ml |
| Enterococi | 0 | Nifer/250ml |
| Pseudomonas aeruginosa | 0 | Nifer/250ml |
| Cyfrifiad cytrefi 22°C | 100 | Nifer/ml |
| Cyfrifiad cytrefi 37°C | 20 | Nifer/ml |
TABL B: PARAMEDRAU CEMEGOL
Crynodiadau a gwerthoedd rhagnodedig
| Paramedrau | Crynodiad neu werth uchaf | Unedau mesur |
|---|---|---|
(i) Mae'r gwerth paramedrig yn cyfeirio at y crynodiad monomerau gweddillol yn y dŵr fel y'i cyfrifir yn ôl manylebau o uchafswm y gollyngiad o'r polymer cyfatebol mewn cyffyrddiad â dŵr. Rheolir hyn drwy gyfrwng manylebau cynnyrch. | ||
(ii) Gweler hefyd y fformiwla nitrad-nitraid yn rheoliad 4(c). | ||
(iii) At y dibenion hyn, ystyr “plaleiddiaid” yw:
a chynhyrchion perthynol (ymhlith eraill, rheoleiddwyr tyfiant) a'u metabolion a'u cynhyrchion diraddio ac adweithio perthnasol. Y plaleiddiaid hynny, yn unig, sy'n debygol o fod yn bresennol mewn cyflenwad penodol sydd angen eu monitro. | ||
(iv) Ystyr “cyfanswm plaleiddiaid” yw swm y crynodiadau o'r plaleiddiaid unigol a ganfyddir ac a feintiolir yn y broses monitro. | ||
(v) Y cyfansoddion penodedig yw:
Mae'r gwerth paramedrig yn gymwys i swm y crynodiadau o'r cyfansoddion unigol a ganfyddir ac a feintiolir yn y broses monitro. | ||
(vi) Mae'r gwerth paramedrig yn gymwys i swm y crynodiadau o'r cyfansoddion unigol a ganfyddir ac a feintiolir yn y broses monitro. | ||
(vii) Y cyfansoddion penodedig yw:
Mae'r gwerth paramedrig yn gymwys i swm y crynodiadau o'r cyfansoddion unigol a ganfyddir ac a feintiolir yn y broses monitro. | ||
| Acrylamid (i) | 0.10 | μg/l |
| Antimoni | 5.0 | μg/l |
| Arsenig | 10 | μg/l |
| Bensen | 1.0 | μg/l |
| Benso(a)pyren | 0.010 | μg/l |
| Boron | 1.0 | mg/l |
| Bromad | 10 | μg/l |
| Cadmiwm | 5.0 | μg/l |
| Cromiwm | 50 | μg/l |
| Copr | 2.0 | mg/l |
| Cyanid | 50 | μg/l |
| 1, 2 dicloroethan | 3.0 | μg/l |
| Epiclorohydrin (i) | 0.10 | μg/l |
| Fflworid | 1.5 | mg/l |
| Plwm | 25 (tan 25 Rhagfyr 2013) | μg/l |
| 10 (o 25 Rhagfyr 2013 ymlaen) | μg/l | |
| Mercwri | 1.0 | μg/l |
| Nicel | 20 | μg/l |
| Nitrad (ii) | 50 | mg/l |
| Nitraid(ii) | 0.5 (neu 0.1 yn achos gweithfeydd trin) | mg/l |
| Plaleiddiaid (iii)— | ||
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.10 | μg/l |
| 0.50 | μg/l |
| Hydrocarbonau polysyclig aromatig (v) | 0.10 | μg/l |
| Seleniwm | 10 | μg/l |
| Tetracloroethen a Thricloroethen (vi) | 10 | μg/l |
| Trihalomethanau: Cyfanswm (vii) | 100 | μg/l |
| Finyl clorid (i) | 0.50 | μg/l |
Gofynion cenedlaethol — Crynodiadau neu werthoedd rhagnodedig
| Paramedrau | Crynodiad neu werth uchaf neu gyflwr | Unedau mesur |
|---|---|---|
| Alwminiwm | 200 | μg/l |
| Lliw | 20 | mg/l Pt/Co |
| Haearn | 200 | μg/l |
| Manganîs | 50 | μg/l |
| Arogl | Derbyniol a dim newid annormal | |
| Sodiwm | 200 | mg/l |
| Blas | Derbyniol a dim newid annormal | |
| Tetracloromethan | 3 | μg/l |
| Cymylogrwydd | 4 | NTU |
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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