Why does water hardness vary across Alabama?

Water hardness varies across Alabama because utilities can use different groundwater wells, reservoirs, treatment plants, blends, and distribution zones. Private wells can also differ from nearby municipal water.

What city in Alabama has the hardest water?

Albertville has the hardest water among higher-confidence Alabama city pages at 215 PPM. Check the city page for local systems and ZIP codes before making treatment decisions.

Does this include municipal water, well water, or both?

The state report combines public water system records, utility reports, and USGS monitoring where available. Municipal treated-water records are preferred when present. Private well hardness can vary at the address level and should be confirmed with a local test.

How many water systems are in Alabama?

Alabama has 501 active community water systems serving 528 cities.

Water Hardness in Alabama

Average: 72 PPMSlightly Hard528 cities501 water systems

State report

Is Alabama Water Hard or Soft?

Alabama water is slightly hard on average at 72 PPM (4.2 GPG). Local readings can vary by utility, aquifer, treatment plant, and private well use.

State average

72 PPM

Slightly Hard

Local coverage

528 cities

501 water systems

Source profile

377 ZIPs

direct or USGS-backed

Alabama has mixed source coverage across treated-water records, USGS monitoring, and estimated fallback values.

Methodology Data sources Search by ZIP code

State data profile

How to read the Alabama results

State pages are screening and comparison hubs. They summarize ZIP, city, and water-system patterns so you can find the local page that best matches your home or utility.

Direct or USGS-backed ZIPs

377 of 613

62% use treated-water records or USGS monitoring.

Estimated ZIP values

236 ZIPs

38% use nearby, county, or state-level fallback values.

Dataset update

March 9, 2026

Source coverage and rollups are rebuilt from the public dataset.

Use the source coverage below to judge how much local confirmation a specific city or ZIP needs. The methodology page explains the source hierarchy, weighting, and limitations.

State Average

72 PPM

Slightly Hard

Coverage

528 cities

501 water systems in the state rollup.

Data Source Coverage

ZIP-level source mix for Alabama; higher direct and USGS coverage means less reliance on regional estimates.

613 ZIPs covered

Verified treated water

Utility, CCR, or state treated-water records

36%

220 ZIPs

High-confidence USGS

Environmental monitoring matched to local systems

26%

157 ZIPs

Estimated

Nearby, county, or state-level fallback values

38%

236 ZIPs

In Alabama, 36% of ZIPs use verified treated-water records, 26% use high-confidence USGS monitoring, and 38% use estimates that should be confirmed locally for treatment decisions.

What the Data Shows in Alabama

Most classified ZIPs in Alabama are below the hard-water threshold, though local systems can still vary.

Alabama uses a mixed data profile across treated-water records, USGS monitoring, and estimated fallback values.

Use the city table below to compare local results. For estimated locations or unusually high readings, confirm with your utility or a home hardness test before sizing treatment equipment.

ZIP Hardness Distribution

Soft60% (369)

Slightly Hard19% (115)

Moderately Hard12% (73)

Hard9% (56)

Very Hard0% (0)

Treatment Takeaway

Hardness treatment is less likely to be needed statewide, but local water systems can still differ from the state pattern. Test first if you see scale or spotting.

How to Use This Data

Use the source coverage above to decide how much local confirmation you need for a specific city or ZIP code.

Source-Backed Water Systems in Alabama

Large systems with treated-water reports or USGS monitoring behind the state rollup.

Review source labels

Water system	Hardness	Source label	Population
Central Alabama Water System AL0000738 - Jefferson County	40 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	585,000
Mobile, Bd. Of W&S Comm. Of The City Of AL0001005 - Mobile County	40 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	279,000
Montgomery (Ww&Ssb Of The City Of) AL0001070 - Montgomery County	50 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	276,000
Huntsville Utilities AL0000882 - Madison County	80 PPM Slightly Hard	Annual Water Quality Report Verified - Annual Water Quality Report	262,158
Tuscaloosa Water & Sewer AL0001313 - Tuscaloosa County	30 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	166,524
Madison County Water Department AL0000888 - Madison County	80 PPM Slightly Hard	Annual Water Quality Report Verified - Annual Water Quality Report	119,100
Dothan Utilities, City Of AL0000681 - Houston County	40 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	97,146
Bessemer Water Service AL0000737 - Jefferson County	40 PPM Soft	Annual Water Quality Report Verified - Annual Water Quality Report	86,091

Useful Alabama City Pages

Shortcuts to city pages backed by more ZIP-code or water-system data.

Cities With More Local Data

Slightly Hard (80 PPM)

Prioritize cities with multiple ZIPs and systems, then use source badges on each city page to separate verified treated-water records from estimates.

Top 10 Hardest Water Cities

#	City	Hardness
1	Albertville	Hard (215 PPM)
2	Grant	Hard (215 PPM)
3	Arab	Hard (214 PPM)
4	Guntersville	Hard (214 PPM)
5	Horton	Hard (214 PPM)
6	Union Grove	Hard (214 PPM)
7	Langston	Hard (203 PPM)
8	Boaz	Hard (187 PPM)
9	Leighton	Hard (182 PPM)
10	Crossville	Moderately Hard (138 PPM)

Top 10 Softest Water Cities

#	City	Hardness
1	Selma	Soft (6 PPM)
2	New Site	Soft (9 PPM)
3	Bay Minette	Soft (17 PPM)
4	Bon Secour	Soft (17 PPM)
5	Daphne	Soft (17 PPM)
6	Elberta	Soft (17 PPM)
7	Fairhope	Soft (17 PPM)
8	Foley	Soft (17 PPM)
9	Fort Morgan	Soft (17 PPM)
10	Lillian	Soft (17 PPM)

All Cities in Alabama

City pages marked Estimated use fallback values and should be confirmed with local testing or utility data.

AbbevilleHard AcmarSlightly Hard AdamsvilleSoft AddisonModerately Hard AdgerSoft AlbertaSoft AlbertvilleHard AldenSoft AlexandriaSoft AlicevilleSlightly Hard AlpineSoft AndalusiaSoft AndersonSlightly Hard AnnistonSoft ArabHard ArdmoreSlightly Hard AritonSlightly Hard ArleyModerately Hard ArlingtonSoft AshfordSoft AshlandSoft AshvilleSlightly Hard AthensSlightly Hard AtmoreSoft AttallaModerately Hard AuburnSoft AutaugavilleSoft AxisSoft BaileytonHard BanksSlightly Hard BankstonSoft Bay MinetteSoft Bayou La BatreSoft Bear CreekModerately Hard BeatriceSlightly Hard BeavertonSoft BelkSoft BellamySoft BellwoodSlightly Hard BentonSoft BerryModerately Hard BessemerSoft Big CoveSlightly Hard BillingsleySoft BirminghamSoft BlackSlightly Hard BlountsvilleSoft Bluff ParkSoft BoazHard BoligeeSoft Bon SecourSoft BoykinSoft Boys RanchSoft BrantleySoft BremenHard BrentSoft BridgeportHard BrierfieldSoft BrilliantModerately Hard BrooksideSoft BrookwoodSoft BrownsboroSlightly Hard BrundidgeSlightly Hard BryantHard BuhlSoft BurkvilleSoft ButlerSlightly Hard Cahaba HeightsSoft CaleraModerately Hard CalvertSoft CamdenSoft Camp HillSoft CampbellSoft Carbon HillModerately Hard CarrolltonSlightly Hard CastleberryModerately Hard CatherineSoft CecilSoft Cedar BluffSoft Center PointSoft CentreSoft CentrevilleModerately Hard ChancellorSlightly Hard ChatomSoft ChelseaModerately Hard CherokeeHard ChickasawSoft ChunchulaSoft CitronelleSoft ClantonSoft ClaytonSlightly Hard ClevelandSoft ClioSlightly Hard CloptonHard CoalburgSoft CoatopaSoft CodenSoft Coffee SpringsSlightly Hard CoffeevilleSoft CokerSoft CollinsvilleSoft ColumbiaSoft ColumbianaModerately Hard Cook SpringsSlightly Hard Coosa PinesSoft CoosadaSoft CordovaModerately Hard CottondaleSoft CottonwoodSoft CourtlandHard CoySoft CragfordSoft Crane HillHard CreolaSoft Crestline HeightSoft CropwellSlightly Hard CrossvilleModerately Hard CubaSoft CullmanHard CussetaSoft CypressSoft DadevilleSoft DalevilleSlightly Hard DanvilleSlightly Hard DaphneSoft Dauphin IslandSoft DavistonSoft DawsonSoft DeatsvilleSoft DecaturSlightly Hard Deer ParkSlightly Hard DeltaSoft DemopolisSoft DetroitSoft DickinsonSoft DixianaSoft Dixons MillsSoft DocenaSoft DolomiteSoft DoraSoft DothanSoft Double SpringsModerately Hard DozierSoft DuncanvilleSoft DuttonHard East BrewtonSoft EastabogaSoft EcholaSoft EclecticSoft Eight MileSoft ElbaSlightly Hard ElbertaSoft EldridgeSoft ElkmontSlightly Hard ElmoreSoft ElrodSoft EmelleSoft EmpireModerately Hard EnterpriseSlightly Hard EpesSoft EqualitySoft EstillforkHard EthelsvilleSlightly Hard EufaulaSlightly Hard EutawSoft EvaSlightly Hard EvergreenModerately Hard FacklerHard FairfieldSoft FairhopeSoft FalkvilleSlightly Hard FaunsdaleSoft FayetteModerately Hard FitzpatrickSoft Five PointsSlightly Hard Flat RockHard FlomatonSoft FloralaSoft FlorenceSlightly Hard FoleySoft Forest HomeSoft ForklandSoft Fort DavisSoft Fort DepositSoft Fort Mc ClellanSoft Fort MitchellSoft Fort MorganSoft Fort PayneSoft Fort RuckerSlightly Hard FostersSoft FranklinModerately Hard FrankvilleSlightly Hard Frisco CitySlightly Hard FruitdaleSoft FruithurstSoft FultonSoft FyffeSoft GadsdenModerately Hard GainestownSoft GainesvilleSoft GallantModerately Hard GallionSoft Garden CityHard GardendaleSoft GaylesvilleSoft GenevaSlightly Hard GeorgianaSoft GeraldineSoft GilbertownSlightly Hard Glen AllenModerately Hard GlencoeModerately Hard GlenwoodSlightly Hard GoodwaterSoft GordoSlightly Hard GordonSoft GoshenSlightly Hard GradySoft GrahamSoft Grand BaySoft GrantHard Green PondModerately Hard GreensboroSoft GreenvilleSoft Grove HillSlightly Hard GroveoakSoft GuinModerately Hard Gunter AfsSoft GuntersvilleHard GurleySlightly Hard HackleburgModerately Hard HaleyvilleModerately Hard HamiltonModerately Hard HancevilleModerately Hard HardawaySoft HarpersvilleModerately Hard HartfordSlightly Hard HartselleSlightly Hard HarvestSlightly Hard HatchechubbeeSoft HaydenSoft HaynevilleSoft Hazel GreenSlightly Hard HeadlandModerately Hard HeflinSoft HelenaModerately Hard HenagarSoft HigdonSoft Highland HomeSoft HillsboroHard HodgesModerately Hard Hokes BluffModerately Hard HollinsSoft Holly PondHard HollytreeHard HollywoodHard HoltSoft HomewoodSoft HonoravilleSoft HooverSoft Hope HullSoft HortonHard HoustonModerately Hard HueytownSoft HuntsvilleSlightly Hard HurtsboroSoft HytopHard IderSoft Indian SpringsModerately Hard IrondaleSoft IrvingtonSoft JachinSoft JackSlightly Hard JacksonSlightly Hard Jacksons GapSoft JacksonvilleSoft JasperModerately Hard JemisonSoft JonesSoft JoppaHard KellytonSoft KennedySoft KeystoneModerately Hard KillenSlightly Hard KimberlySoft KinstonSlightly Hard KnoxvilleSoft Laceys SpringSlightly Hard LafayetteSlightly Hard LanettSlightly Hard LangstonHard LapineSoft LawleySoft LeedsSoft LeesburgSoft LeightonHard LeroyModerately Hard LesterSlightly Hard LetohatcheeSoft LexingtonSlightly Hard LillianSoft LincolnSoft LindenSoft LinevilleSoft LismanSlightly Hard Little RiverSoft LockhartSoft Locust ForkSoft LoganHard LouisvilleSlightly Hard Lower Peach TreeSoft LoxleySoft LuverneSoft LynnModerately Hard MagnoliaSoft MalcolmSoft MaplesvilleSoft MarburySoft MargaretSlightly Hard MarionSoft Marion JunctionSoft MathewsSoft Maxwell A F BSoft MayleneModerately Hard Mc CallaSoft Mc IntoshSoft Mc KenzieSoft MentoneSoft MeridianvilleSlightly Hard MidfieldSoft Midland CitySlightly Hard MidwaySoft MillbrookSoft MillervilleSoft MillportSlightly Hard MillrySlightly Hard MobileSoft MonroevilleModerately Hard MontevalloModerately Hard MontgomerySoft MontroseSoft MooresvilleSlightly Hard MorrisSoft MoultonHard Mount HopeHard Mount OliveSoft Mount VernonSoft Mountain BrookSoft MunfordSoft MuscadineSoft Muscle ShoalsHard MyrtlewoodSoft NauvooModerately Hard NeedhamSoft New BrocktonSlightly Hard New CastleSoft New HopeSlightly Hard New MarketSlightly Hard New SiteSoft NewbernSoft NewtonSoft NewvilleHard NorthportSoft NotasulgaSoft OakmanModerately Hard OdenvilleSlightly Hard OhatcheeSoft OneontaSoft OpelikaSoft OppSoft Orange BeachSoft OrrvilleSoft OxfordSoft OzarkSlightly Hard Paint RockHard PanolaSoft PanseySoft ParrishModerately Hard Pell CitySlightly Hard PenningtonSoft PerdidoSoft Perdue HillModerately Hard PetermanModerately Hard Phenix CitySoft Phil CampbellModerately Hard PiedmontSoft Pike RoadSoft PinckardSlightly Hard Pine AppleSoft Pine HillSoft PisgahHard PittsviewSoft PlantersvilleSoft Pleasant GroveSoft Point ClearSoft PrattvilleSoft PrichardSoft PrincetonHard QuintonModerately Hard RaglandSlightly Hard Rainbow CityModerately Hard RainsvilleSlightly Hard RalphSoft RamerSoft RanburneSoft RandolphModerately Hard RangeSoft Red BayModerately Hard Red LevelSoft ReformSlightly Hard RemlapSoft ReptonModerately Hard River FallsSoft RiversideSlightly Hard RobertsdaleSoft Rock MillsSoft RockfordSoft RogersvilleSlightly Hard RussellvilleHard RutledgeSoft SaffordSoft Saint StephensSlightly Hard SalemSoft SamsonSlightly Hard SaralandSoft SardisSoft SatsumaSoft SawyervilleSoft SealeSoft SectionHard SelmaSoft SeminoleSoft SemmesSoft SheffieldHard ShelbySlightly Hard Shoal CreekModerately Hard ShorterSoft ShortervilleHard SilasSoft SilverhillSoft SipseyModerately Hard SkippervilleSlightly Hard SlocombSlightly Hard SmithsSoft SneadModerately Hard SomervilleSlightly Hard SouthsideModerately Hard Spanish FortSoft SpringvilleSlightly Hard Spruce PineHard StantonSoft StapletonSoft SteeleSlightly Hard SterrettModerately Hard StevensonHard StewartSoft StocktonSoft SulligentSoft SumitonModerately Hard SummerdaleSoft SunflowerSoft Sweet WaterSoft SycamoreSoft SylacaugaSoft Sylvan SpringsSoft SylvaniaSoft TalladegaSoft TallasseeSoft TannerSlightly Hard TheodoreSoft ThomastonSoft ThomasvilleSoft ThorsbySoft TibbieSlightly Hard TitusSoft ToneySlightly Hard Town CreekHard TownleyModerately Hard ToxeySoft TraffordSoft TrentonHard TrianaSlightly Hard TrinityHard TroySlightly Hard TrussvilleSoft TuscaloosaSoft TuscumbiaHard TuskegeeSoft Tuskegee InstituSoft Union GroveHard Union SpringsSlightly Hard UniontownSoft UriahModerately Hard Valhermoso SprinSlightly Hard ValleySoft Valley HeadSlightly Hard VanceSoft VandiverModerately Hard VerbenaSoft VernonSoft Vestavia HillsSoft VinaHard VincentModerately Hard Vinegar BendSoft VinemontHard VredenburghModerately Hard WadleySoft WagarvilleSoft Walnut GroveModerately Hard WardSoft WarriorSoft WaterlooSlightly Hard WaverlySoft WeaverSoft WebbSoft WedoweeSoft WellingtonSoft WeogufkaSoft West BloctonModerately Hard WetumpkaSoft WhatleySoft WilmerSoft WilsonvilleModerately Hard WinfieldModerately Hard WingSoft WoodlandSoft WoodstockSoft WoodvilleHard YorkSoft