Tap water quality in the community
| Parameters . | Values . | Tap water quality criteriaa . |
|---|---|---|
| pH (pH at 25 °C) | 8.0 | 6.5–8.5 |
| Color (platinum cobalt) | <5 | <15 |
| Turbidity (NTU) | 0.58 | <5 |
| Hardness (mg/L) | 141 | <500 |
| TDS (mg/L) | 216 | <1,000 |
| Fe (mg/L) | ND | <0.5 |
| Mn (mg/L) | ND | <0.3 |
| Cu (mg/L) | ND | <1.0 |
| Zn (mg/L) | ND | <3.0 |
| Pb (mg/L) | ND | <0.01 |
| Cr (mg/L) | ND | <0.05 |
| Cd (mg/L) | ND | <0.003 |
| As (mg/L) | ND | <0.01 |
| Hg (mg/L) | ND | <0.001 |
| Sulfate (mg/L) | 37 | <250 |
| Chloride (mg/L) | 20 | <250 |
| Nitrate (mg/L) | 0.48 | <50 |
| Fluoride (mg/L) | 0.13 | <0.7 |
| Coliform bacteria (MPN/100 mL) | ND | ND |
| Fecal coliform bacteria (MPN/100 mL) | ND | ND |
| Parameters . | Values . | Tap water quality criteriaa . |
|---|---|---|
| pH (pH at 25 °C) | 8.0 | 6.5–8.5 |
| Color (platinum cobalt) | <5 | <15 |
| Turbidity (NTU) | 0.58 | <5 |
| Hardness (mg/L) | 141 | <500 |
| TDS (mg/L) | 216 | <1,000 |
| Fe (mg/L) | ND | <0.5 |
| Mn (mg/L) | ND | <0.3 |
| Cu (mg/L) | ND | <1.0 |
| Zn (mg/L) | ND | <3.0 |
| Pb (mg/L) | ND | <0.01 |
| Cr (mg/L) | ND | <0.05 |
| Cd (mg/L) | ND | <0.003 |
| As (mg/L) | ND | <0.01 |
| Hg (mg/L) | ND | <0.001 |
| Sulfate (mg/L) | 37 | <250 |
| Chloride (mg/L) | 20 | <250 |
| Nitrate (mg/L) | 0.48 | <50 |
| Fluoride (mg/L) | 0.13 | <0.7 |
| Coliform bacteria (MPN/100 mL) | ND | ND |
| Fecal coliform bacteria (MPN/100 mL) | ND | ND |
ND, not detected.
aTap water quality criteria reported by the Department of Health, Ministry of Public Health, Thailand (Department of Health 2010).