Water hardness in Bulgaria
26 cities with published hardness data, sorted by population. Median: 1.26 mmol/L.
Median
1.26 mmol/L
126 mg/L CaCO₃ · hard
- 8 soft
- 4 moderately hard
- 6 hard
- 8 very hard
Bulgarian health inspectorates report hardness in mgeq/L (1 mgeq/L = 0.5 mmol/L); the limit is 12 mgeq/L.
Ranking of the hardest and softest water in Bulgaria →
Regions
Largest places, hardest first
Every place is listed on its region page.
| mmol/L | mg/L | ||
|---|---|---|---|
| Parvomay · Plovdiv | 3.11 | 311 | very hard |
| Rakovski · Plovdiv | 2.73 | 273 | very hard |
| Svishtov · Veliko Tarnovo province | 2.47 | 247 | very hard |
| Plovdiv · Plovdiv | 2.45 | 245 | very hard |
| Stamboliyski · Plovdiv | 2.37 | 237 | very hard |
| Asenovgrad · Plovdiv | 2.3 | 230 | very hard |
| Veliko Tarnovo · Veliko Tarnovo province | 1.26 | 126 | hard |
| Gorna Oryahovitsa · Veliko Tarnovo province | 1.26 | 126 | hard |
| Smolyan · Smolyan province | 1.01 | 101 | moderately hard |
| Karlovo · Plovdiv | 0.57 | 57 | soft |
| Sofia · Sofia City (Sofia-grad) | 0.42 | 43 | soft |