Tap water hardness in Bahia

We have published hardness data for 148 cities in Bahia. The median is 66 mg/L; the hardest water is in Ruy Barbosa (401 mg/L), the softest in Camacan (11 mg/L).

13 % of these cities have hard or very hard water (over 120 mg/L).

Portaria GM/MS nº 888/2021 sets a maximum of 300 mg/L CaCO₃ for total hardness (dureza total); operators report it in mg/L to SISAGUA.

Each dot is a place with published data; colour shows the hardness band.

Cities in Bahia, hardest first

	mg/L	mg/L
Ruy Barbosa	401	401	very hard
Maraú	238	238	very hard
Caravelas	223	223	very hard
Wagner	214	214	very hard
Boninal	201	201	very hard
Iraquara	190	190	very hard
Jandaíra	180	180	very hard
Mirangaba	175	175	hard
Ibitiara	164	164	hard
Ribeira do Amparo	163	163	hard
Potiraguá	158	158	hard
Mirante	157	157	hard
Vereda	154	154	hard
Alcobaça	137	137	hard
Laje	135	135	hard
Lamarão	127	127	hard
Itapé	123	123	hard
Guaratinga	122	122	hard
Seabra	122	122	hard
Ribeira do Pombal	119	119	moderately hard
Tucano	119	119	moderately hard
Cardeal da Silva	118	118	moderately hard
Itabuna	117	117	moderately hard
Utinga	116	116	moderately hard
Maracás	112	112	moderately hard
Lajedo do Tabocal	108	108	moderately hard
Valente	103	103	moderately hard
Guanambi	102	102	moderately hard
Ibiassucê	102	102	moderately hard
Nova Fátima	102	102	moderately hard
Gavião	102	102	moderately hard
Pé de Serra	101	101	moderately hard
Capela do Alto Alegre	101	101	moderately hard
São Domingos	101	101	moderately hard
Riachão do Jacuípe	100	100	moderately hard
Cairu	99	99	moderately hard
Salvador	98	98	moderately hard
Lafaiete Coutinho	96	96	moderately hard
Saubara	92	92	moderately hard
Lajedão	91	91	moderately hard
Araci	90	90	moderately hard
Caetité	90	90	moderately hard
Planaltino	88	88	moderately hard
Teodoro Sampaio	87	87	moderately hard
Pedrão	87	87	moderately hard
Mascote	83	83	moderately hard
Conceição da Feira	83	83	moderately hard
Rio Real	83	83	moderately hard
Canavieiras	82	82	moderately hard
Feira de Santana	82	82	moderately hard
Amélia Rodrigues	81	81	moderately hard
Aracatu	80	80	moderately hard
Manoel Vitorino	80	80	moderately hard
Muritiba	79	79	moderately hard
Santo Amaro	79	79	moderately hard
Santo Estêvão	78	78	moderately hard
Antônio Cardoso	77	77	moderately hard
Cabaceiras do Paraguaçu	76	76	moderately hard
Itaeté	74	74	moderately hard
Prado	74	74	moderately hard
Cipó	73	73	moderately hard
Jequié	73	73	moderately hard
São Sebastião do Passé	73	73	moderately hard
Gongogi	73	73	moderately hard
Itaju do Colônia	72	72	moderately hard
Barra do Rocha	72	72	moderately hard
Cruz das Almas	72	72	moderately hard
Nova Soure	71	71	moderately hard
Castro Alves	71	71	moderately hard
Lauro de Freitas	71	71	moderately hard
Catolândia	68	68	moderately hard
Madre de Deus	68	68	moderately hard
São Francisco do Conde	67	67	moderately hard
Ibirapuã	66	66	moderately hard
Mucuri	66	66	moderately hard
Simões Filho	65	65	moderately hard
Andaraí	65	65	moderately hard
Candeias	64	64	moderately hard
Baianópolis	63	63	moderately hard
Itiruçu	62	62	moderately hard
Santa Cruz Cabrália	60	60	soft
Muniz Ferreira	59	59	soft
Água Fria	59	59	soft
Lagoa Real	58	58	soft
Ubatã	58	58	soft
Itagimirim	58	58	soft
Amargosa	57	57	soft
Ibirapitanga	57	57	soft
Paramirim	57	57	soft
Itagibá	55	55	soft
Medeiros Neto	53	53	soft
Lajedinho	53	53	soft
Itapetinga	53	53	soft
Eunápolis	53	53	soft
Olindina	53	53	soft
Ipiaú	52	52	soft
Ouriçangas	51	51	soft
Nova Redenção	50	50	soft
Palmas de Monte Alto	49	49	soft
Ubaitaba	49	49	soft
Teofilândia	47	47	soft
Malhada	46	46	soft
Irará	46	46	soft
Santa Terezinha	46	46	soft
Ipirá	44	44	soft
Biritinga	44	44	soft
Teixeira de Freitas	44	44	soft
Ibipitanga	42	42	soft
Sátiro Dias	42	42	soft
Dário Meira	42	42	soft
Maetinga	42	42	soft
Acajutiba	42	42	soft
Inhambupe	42	42	soft
Marcionílio Souza	42	42	soft
Licínio de Almeida	40	40	soft
Caculé	40	40	soft
Rio do Antônio	40	40	soft
Aporá	39	39	soft
Coaraci	39	39	soft
Nova Viçosa	39	39	soft
Rafael Jambeiro	38	38	soft
Aurelino Leal	37	37	soft
Itaberaba	37	37	soft
Nova Canaã	36	36	soft
Pojuca	35	35	soft
Jaguaquara	35	35	soft
Uruçuca	34	34	soft
Salinas da Margarida	34	34	soft
Iguaí	33	33	soft
Itambé	33	33	soft
Itarantim	33	33	soft
Maiquinique	33	33	soft
Piripá	33	33	soft
Vitória da Conquista	33	33	soft
Itapitanga	32	32	soft
Itajuípe	31	31	soft
Ibicuí	25	25	soft
São Félix do Coribe	23	23	soft
Mortugaba	22	22	soft
Rio do Pires	20	20	soft
Firmino Alves	20	20	soft
Floresta Azul	20	20	soft
Santa Maria da Vitória	18	18	soft
Camamu	17	17	soft
Arataca	16	16	soft
São José da Vitória	16	16	soft
Ilhéus	13	13	soft
Camacan	11	11	soft

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