|
|  |  |
 |
| |
 |
| Drinking
Water Quality Standards | |  |
| Properties | Parameters | Units | Standards |
| Maximum
Acceptable Concentration | Maximum
Allowable Concentration | | Physical | 1.
Colour | Platinum-Cobalt
(Pt-Co) | 5 | 15 |
| 2. Taste | - | Non
Objectionable | Non Objectionable |
| 3. Odour | - | Non
Objectionable | Non Objectionable |
| 4. Turbidity | Silica
scale unit
(SSU) | 5 | 20 |
| 5. pH | - | 6.5-8.5 | 9.2 |
| Chemical | 6.
Total Solids | mg/dm3 | 500 | 1,500 |
| 7. Iron (Fe) | mg/dm3 | 0.5 | 1.0 |
| 8. Manganese (Mn) | mg/dm3 | 0.3 | 0.5 |
| 9. Iron & Manganese (Fe&Mn) | mg/dm3 | 0.5 | 1.0 |
| 10.Copper (cu) | mg/dm3 | 1.0 | 1.5 |
| 11.Zinc (Zn) | mg/dm3 | 5.0 | 15.0 |
| 12.Calcium (Ca) | mg/dm3 | 75b | 200 |
| 13.Magnesium (Mg) | mg/dm3 | 50 | 150 |
| 14.Sulphate (SO4) | mg/dm3 | 200 | 250c |
| 15.Chloride (Cl) | mg/dm3 | 250 | 600 |
| 16.Fluroride (F) | mg/dm3 | 0.7 | 1.0 |
| 17.Nitrate (NO3) | mg/dm3 | 45 | 45 |
| 18.Alkylbenzyl Sulfonates (ABS) | mg/dm3 | 0.5 | 1.0 |
| 19.Phenolic substance (as phenol) | mg/dm3 | 0.001 | 0.002 |
| Toxic elements | 20.Mercury
(Hg) | mg/dm3 | 0.001 | - |
| 21.Lead (Pb) | mg/dm3 | 0.05 | - |
| 22.Arsenic (As) | mg/dm3 | 0.05 | - |
| 23.Selenium (Se) | mg/dm3 | 0.01 | - |
24.Chromium
(Cr hexavalent) | mg/dm3 | 0.05 | - |
| 25.Cyanide (CN) | mg/dm3 | 0.2 | - |
| 26.Cadmium (Cd) | mg/dm3 | 0.01 | - |
| 27.Barium (Ba) | mg/dm3 | 1.0 | - |
| Bacterial | 28.Standard
plate
count | Colonies/cm3 | 500 | - |
| 29.Total coliform | MPN/100
cm3 | < 2.2 | - |
| 30.E.coli | MPN/100
cm3 | None | - |
|
Remarks |
: | mg/dm3 |
milligram
per cubic decimeter | | MPN | Most
Probable Number | a
|
These values are allowed for tap water or ground water that is used as temporary
drinking water. Such water with a parameter between the maximum acceptable concentration
and the maximum allowable concentration can not be certified as standard drinking
water for industrial products and stamped with the standard logo. |
b
|
If the calcium concentration is higher than the standard and magnesium concentration
is lower than the standard, calcium and magnesium will be identified in terms
of total hardness with a standard value of less than 300 mg/dm3 (as
CaCO3) | | | | c
|
If a sulphate concentration of 250 mg/dm3 is reached, magnesium concentration
must not be more than 30 mg/dm3. | | Source | : | Notification
of the Ministry of Industry, No. 322, B.E. 2521 (1978), issued under the Industrial
Products Standards Act B.E. 2511 (1968), published in the Royal Gazette, Vol.
95, Part 68, dated July 4, B.E. 2521 (1978). | |
 |
|
| Bottled
Drinking Water Quality Standard | | |
| Properties | Parameters | Units | Maximum
Allowable Concentration | | Physical | 1.
Colour | Hazen | 20 |
| 2. Odour | - | None |
| 3. Turbidity | Silica
scale unit
(SSU) | 5 |
| 4. pH | - | 6.5-8.5 |
| Chemical | 5.
Total Soilds) | mg/l | 500 |
| 6. Total Hardness as CaCO3 | mg/l | 100 |
| 7. Arsenic (As) | mg/l | 0.05 |
| 8. Barium (Ba) | mg/l | 1.0 |
| 9. Cadmium (Cd) | mg/l | 0.005 |
| 10.Chloride as Chlorine | mg/l | 250 |
| 11.Chromium (Cr) | mg/l | 0.05 |
| 12.Copper (cu) | mg/l | 1.0 |
| 13.Iron (Fe) | mg/l | 0.3 |
| 14.Lead (Pb) | mg/l | 0.05 |
| 15.Manganese (Mn) | mg/l | 0.05 |
| 16.Mercury (Hg) | mg/l | 0.002 |
| 17.Nitrate as Nitrogen (NO3
- N) | mg/l | 4.0 |
| 18.Phenol | mg/l | 0.001 |
| 19.Selenium (Se) | mg/l | 0.01 |
| 20.Silver (Ag) | mg/l | 0.05 |
| 21.Sulphate (SO4) | mg/l | 250 |
| 22.Zinc (Zn) | mg/l | 5.0 |
| 23.Fluoride as Fluorine (F) | mg/l | 1.5 |
| 24.Aluminium (Al) | mg/l | 0.2 |
| 25.Alkylbenzene Sulfonate | mg/l | 0.2 |
| 26.Cyanida (CN) | mg/l | 0.1 |
| Bacterial | 27.Coliform | MPN/100
cm3 | 2.2 |
| 28.E.Coli | MPN/100
cm3 | None |
| 29.Disease causing bacteria | MPN/100
cm3 | None |
|
| Remarks | : | mg/dm3 |
milligram
per cubic decimeter | | Penalty | : | A
licensee who does not comply with this notiifcation shall be subjected to imprisonment
for a term not exceeding 2 years, or punished by fine not exceeding 20,000 baht
or both. | | Source | : | Notification
of the Ministry of Public Health, No. 61 B.E. 2524 (1981), issued under the Food
Act B.E. 2522 (1979), published in the Royal Gazette, Vol. 98, Part 157 (Special
Issue), dated September 24, B.E. 2524 (1981). |
|
|
|
| Ground
Water Quality Standards for Drinking Purposes | | |
| Properties | Parameters | Units | Standards |
| Suitable
Allowance | Maximum Allowable |
| Physical | 1.
Colour | Platinum-Cobalt
(Pt-Co) | 5 | 15 |
| 2. Turbidity | JTU | 5 | 20 |
| 3. pH | - | 7.0-8.5 | 6.5-9.2 |
| Chemical | 4.
Iron (Fe) | mg/l | <=0.5 | 1.0 |
| 5. Manganese (Mn) | mg/l | <=0.3 | 0.5 |
| 6. Copper (Cu) | mg/l | <=1.0 | 1.5 |
| 7. Zinc (Zn) | mg/l | <=5.0 | 15.0 |
| 8. Sulphate (SO4) | mg/l | <=200 | 250 |
| 9. Chloride (Cl) | mg/l | <=250 | 600 |
| 10.Fluoride (F) | mg/l | <=0.7 | 1.0 |
| 11.Nitrate (NO3) | mg/l | <=45 | 45 |
| 12.Total Hardness as CaCO3 | mg/l | <=300 | 500 |
| 13.Non-carbonate hardness as CaCO3 | mg/l | <=200 | 250 |
| 14.Total solids | mg/l | <=600 | 1,200 |
| Toxic elements | 15.Arsenic
(As) | mg/l | None | 0.05 |
| 16.Cyanide (CN) | mg/l | None | 0.1 |
| 17.Lead (Pb) | mg/l | None | 0.05 |
| 18.Mercury (Hg) | mg/l | None | 0.001 |
| 19.Cadmium (Cd) | mg/l | None | 0.01 |
| 20.Selenium (Se) | mg/l | None | 0.01 |
| Bacterial | 21.Standard
plate count | Colonies/cm3 | <=500 | - |
| 22.Coliform bacteria | MPN/100
cm3 | <2.2 | - |
| 23.E.Coli | - | None | - |
|
| Source | : | Notification of the Ministry of Natural Resources and Environment :Technical Criterias and Measures
to Prevent Public Health and Environment Hazard B.E. 2551 (2008), issued under the Ground Water Act B.E. 2520 (1977), published in the Royal Gazette, Vol. 125, Special Part 85 D, dated May 21, B.E. 2551 (2008). | | |
|
