Hardest and softest tap water in Slovakia

All 1113 cities in Slovakia with published data, ranked by total hardness. The national median is 1.9 mmol/L.

Slovak suppliers report "Vápnik a horčík" in mmol/L; the recommended range is 1.1–5 mmol/L.

25 cities with the hardest water

#		mmol/L	mg/L
1	Podbranč · Trnava Region	7.56	757	very hard
2	Krakovany · Trnava Region	6.4	641	very hard
3	Piešťany · Trnava Region	6.4	641	very hard
4	Ostrov · Trnava Region	6.3	631	very hard
5	Moravany nad Váhom · Trnava Region	6.2	621	very hard
6	Vrbové · Trnava Region	6.2	621	very hard
7	Borovce · Trnava Region	5.7	571	very hard
8	Pečeňady · Trnava Region	5.7	571	very hard
9	Koplotovce · Trnava Region	5.4	541	very hard
10	Kurima · Prešov Region	5.38	539	very hard
11	Šíd · Banská Bystrica Region	5.29	530	very hard
12	Madunice · Trnava Region	5.2	521	very hard
13	Torysa · Prešov Region	5.2	521	very hard
14	Veľké Orvište · Trnava Region	5.2	521	very hard
15	Ostrovany · Prešov Region	5.13	514	very hard
16	Rožkovany · Prešov Region	5.1	511	very hard
17	Vysoká · Prešov Region	5.1	511	very hard
18	Lipany · Prešov Region	5.08	509	very hard
19	Pečovská Nová Ves · Prešov Region	5.04	505	very hard
20	Brezovica · Prešov Region	5.02	503	very hard
21	Dolné Lovčice · Trnava Region	5	501	very hard
22	Gregorovce · Prešov Region	5	501	very hard
23	Kamenica · Prešov Region	5	501	very hard
24	Rakovice · Trnava Region	5	501	very hard
25	Šarišské Michaľany · Prešov Region	5	501	very hard

#		mmol/L	mg/L
1	Veľká Lehota · Banská Bystrica Region	0.3	30	soft
2	Šoltýska · Banská Bystrica Region	0.3	30	soft
3	Poruba · Trenčín Region	0.3	30	soft
4	Ozdín · Banská Bystrica Region	0.3	30	soft
5	Nevidzany · Trenčín Region	0.3	30	soft
6	Ihráč · Banská Bystrica Region	0.3	30	soft
7	Čierny Balog · Banská Bystrica Region	0.34	34	soft
8	Zlatno · Banská Bystrica Region	0.34	34	soft
9	Zemplínske Hámre · Prešov Region	0.34	34	soft
10	Hrochoť · Banská Bystrica Region	0.35	35	soft
11	Belá nad Cirochou · Prešov Region	0.38	38	soft
12	Strihovce · Prešov Region	0.39	40	soft
13	Župkov · Banská Bystrica Region	0.4	40	soft
14	Strelníky · Banská Bystrica Region	0.4	40	soft
15	Podhradie · Trenčín Region	0.4	40	soft
16	Lehota pod Vtáčnikom · Trenčín Region	0.4	40	soft
17	Hrabičov · Banská Bystrica Region	0.4	40	soft
18	Beňuš · Banská Bystrica Region	0.4	40	soft
19	Ptičie · Prešov Region	0.42	43	soft
20	Koňuš · Košice Region	0.43	43	soft
21	Kamenica nad Cirochou · Prešov Region	0.43	44	soft
22	Pohronský Bukovec · Banská Bystrica Region	0.45	45	soft
23	Kamienka · Prešov Region	0.45	45	soft
24	Lúčina · Prešov Region	0.46	46	soft
25	Čierna Lehota · Košice Region	0.46	46	soft