1
At 8.5 GPG, Joliet's water qualifies as moderately hard. This can cause limescale in pipes and shorten appliance lifespan.
2
Chlorine levels may affect the taste of Joliet's tap water. A carbon filter improves flavor.

Score

79 /100

Good

"Good" threshold (70)

Joliet tap water is sourced from Lake Michigan and treated by City of Joliet Water. Water hardness is hard at 8.5 GPG which may cause scale buildup. Overall purity score: 79/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to Joliet's 3 issues.

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MATCHED TO JOLIET'S WATER DATA

Best Water Filters for Joliet, IL (2026)

Matched to Hard Water (8.5 GPG), Moderate Chlorine in Joliet.

Hard Water (8.5 GPG) Moderate Chlorine

Best Overall #1 for Joliet

AFWFilters 5600sxt 48000 Grain Softener

Salt-Based Water Softener

$650-750

Why this fits Joliet

Handles Joliet's hard water (Hard Water (8.5 GPG))
Premium quality at $650-750

Pros & Cons +

48000 grain capacity handles very hard water

Digital metered valve saves salt

Requires salt refills monthly

Does not remove contaminants

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Best Value

Clearly Filtered Water Pitcher

Pitcher Filter

$80-95

Why this fits Joliet

Eliminates chlorine taste and odor from Joliet's water
NSF/ANSI 42 + NSF/ANSI 53 + NSF/ANSI 401 certified
Budget-friendly at $80-95

Pros & Cons +

No installation fill and pour

Removes 365+ contaminants including PFAS

Small capacity 2-3 people

Filter replacements every 4 months

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Best for Taste

Waterdrop 10UA Under-Sink Filter

Under-Sink Carbon Filter

$40-60

Why this fits Joliet

Eliminates chlorine taste and odor from Joliet's water
NSF/ANSI 42 certified
Budget-friendly at $40-60

Pros & Cons +

Very affordable

Easy DIY install no plumber

Does not remove PFAS or hardness

Single point of use only

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Also Recommended

Waterdrop G3P800 Tankless RO

Tankless Reverse Osmosis

$380-450

Why this fits Joliet

Eliminates chlorine taste and odor from Joliet's water
NSF/ANSI 58 + NSF 372 certified
Premium quality at $380-450

Pros & Cons +

No tank saves cabinet space

800 GPD fast flow rate

Higher upfront cost

Filter replacements are proprietary

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As an Amazon Associate, PurityMap may earn from qualifying purchases. Based on latest Joliet water data.

Full Filter Comparison for Joliet

Know exactly what's in YOUR tap

City data shows averages. Your home may differ.

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Explore Joliet Water Data

Joliet Water FAQ

Is Joliet IL tap water safe to drink in 2026?

Joliet tap water meets EPA federal drinking water standards and scores 79/100 (Good) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.

Does Joliet IL use chlorine or chloramine for disinfection?

Joliet uses chloramine as the primary disinfectant with a residual level of 1.6 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.

How hard is Joliet IL water and what is the TDS level?

Joliet water hardness is 8.5 grains per gallon (hard) with a TDS of 215 ppm (fair). This level causes noticeable scale buildup in water heaters kettles and dishwashers. A water softener is recommended to protect plumbing and reduce soap usage.

Has PFAS been found in Joliet IL drinking water?

Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Joliet drinking water.

What is the best water filter for Joliet?

Based on Joliet's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Joliet has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Nearby Reports

RockfordIllinois — 58/100 ChampaignIllinois — 73/100 ElginIllinois — 75/100 AuroraIllinois — 79/100 NapervilleIllinois — 79/100 PeoriaIllinois — 79/100

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Data Sources

EPA SDWIS
EWG Tap Water Database
City of Joliet Water CCR
USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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