1
With a hardness of 13.5 GPG, Fontana residents may notice white scale on faucets. Hard water increases maintenance costs.
2
PFAS have been identified in Fontana's water at 3.5 parts per trillion. A reverse osmosis system is the most reliable home treatment.
3
Chlorine levels may affect the taste of Fontana's tap water. A carbon filter improves flavor.

Score

58 /100

Poor

"Good" threshold (70)

Fontana tap water is sourced from State Water Project and groundwater and treated by Fontana Water Company. PFAS forever chemicals have been detected. Water hardness is very hard at 13.5 GPG which may cause scale buildup. TDS is 555 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 58/100 (Poor). Updated for 2026.

Fix Your Water

Best filters matched to Fontana's 4 issues.

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MATCHED TO FONTANA'S WATER DATA

Best Water Filters for Fontana, CA (2026)

Matched to PFAS Detected, Very Hard Water (13.5 GPG), Moderate Chlorine in Fontana.

PFAS Detected Very Hard Water (13.5 GPG) Moderate Chlorine

Best Overall #1 for Fontana

Clearly Filtered Water Pitcher

Pitcher Filter

$80-95

Why this fits Fontana

Removes 99%+ of PFAS detected in Fontana's water
Eliminates chlorine taste and odor from Fontana's water
NSF/ANSI 42 + NSF/ANSI 53 + NSF/ANSI 401 certified

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 PFAS

Waterdrop G3P800 Tankless RO

Tankless Reverse Osmosis

$380-450

Why this fits Fontana

Removes 99%+ of PFAS detected in Fontana's water
Eliminates chlorine taste and odor from Fontana's water
NSF/ANSI 58 + NSF 372 certified

Pros & Cons +

No tank saves cabinet space

800 GPD fast flow rate

Higher upfront cost

Filter replacements are proprietary

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Best for Taste

APEC Water Systems ROES-50

Under-Sink Reverse Osmosis

$195-220

Why this fits Fontana

Removes 99%+ of PFAS detected in Fontana's water
Eliminates chlorine taste and odor from Fontana's water
NSF/ANSI 58 certified

Pros & Cons +

5-stage filtration removes 99%+ of contaminants

Long-lasting filters (6-12 month replacement)

Requires under-sink installation

Wastes some water during filtration

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Best Value

Waterdrop 10UA Under-Sink Filter

Under-Sink Carbon Filter

$40-60

Why this fits Fontana

Eliminates chlorine taste and odor from Fontana'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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As an Amazon Associate, PurityMap may earn from qualifying purchases. Based on latest Fontana water data.

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City data shows averages. Your home may differ.

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Fontana Water FAQ

Is Fontana CA tap water safe to drink in 2026?

Fontana tap water meets EPA federal drinking water standards and scores 58/100 (Poor) on PurityMap for 2026. PFAS forever chemicals have been detected at 3.5 ppt. An NSF-certified filter is strongly recommended. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.

Does Fontana CA use chlorine or chloramine for disinfection?

Fontana uses chloramine as the primary disinfectant with a residual level of 1.1 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 Fontana CA water and what is the TDS level?

Fontana water hardness is 13.5 grains per gallon (very hard) with a TDS of 555 ppm (unacceptable). 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 Fontana CA drinking water?

Yes. PFAS forever chemicals have been detected in Fontana water at approximately 3.5 ppt according to EPA UCMR5 monitoring data. A reverse osmosis or NSF P473-certified filter is the most effective residential solution.

What is the best water filter for Fontana?

Based on Fontana's water profile, we recommend the Clearly Filtered Water Pitcher. Fontana: PFAS detected or elevated lead risk. Reverse osmosis is the only residential technology proven to reduce both below detection limits. TDS will also drop significantly.

Nearby Reports

BakersfieldCalifornia — 55/100 RiversideCalifornia — 58/100 San BernardinoCalifornia — 58/100 Moreno ValleyCalifornia — 58/100 Chula VistaCalifornia — 61/100 San DiegoCalifornia — 61/100

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Data Sources

EPA SDWIS
EWG Tap Water Database
Fontana Water Company CCR
USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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