Is Fontana tap water safe to drink?

Use caution filtration recommended

Fontana's water has significant quality concerns. We strongly recommend a certified water filter.

58/100

Purity Score

Issues Found

13.5 GPG

Hardness

Detected

PFAS

4 Issues Detected in Fontana

PFAS (Forever Chemicals) Detected

PFAS are man-made chemicals that do not break down and accumulate in the body.

PFAS details for Fontana

Very Hard Water (13.5 GPG)

Hard water causes scale in pipes and shortens appliance lifespan.

Hardness data for Fontana

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Fontana

Arsenic Approaching Limit (0.8 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Fontana

Fix Your Water — See Recommended Filters

California

923,359,233,692,337 · State Water Project and groundwater

Fontana Water Quality Report: PFAS Detected

Elevated Risk Updated March 2026 214,547 residents

See Best Filters for Fontana

Purity Score

This 2026 analysis examines Fontana's water supply with a focus on PFAS exposure, hardness, and overall safety. Data is sourced from EPA SDWIS, EWG, and Fontana Water Company consumer confidence reports.

Water Quality Data

PFAS

Detected (3.5 ppt)

PFAS detected. RO filter recommended.

Very hard softener recommended.

Hard water in Fontana

Chlorine

Medium

Affects taste and skin. Carbon filter removes it.

Learn about chlorine

TDS

Unknown

High TDS (>500 ppm) may affect taste.

Contaminant Levels

PFAS

3.5 ppt

Lead

3 ppb

Nitrate

2.8 mg/L

Arsenic

0.8 mg/L

Hardness

13.5 gpg

Health Insights

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.

See Filters

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

Fix Your Water — Check Price

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

Check Price on Amazon

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

Check Price on Amazon

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

Check Price on Amazon

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

Full Filter Comparison for Fontana

Know exactly what's in YOUR tap

City data shows averages. Your home may differ.

Test Your Water — $25-30

About Fontana's Water

PFAS Water Contamination: What Fontana Residents Should Know

PFAS have been detected in Fontana's water supply at 3.5 parts per trillion. Health agencies including the EPA have set limits on certain PFAS compounds in drinking water due to concerns about long-term exposure. While municipal treatment reduces many contaminants, standard water treatment does not fully remove PFAS. Point-of-use reverse osmosis filtration is the most effective home solution confirmed to remove PFAS at the 99%+ level.

Fontana Hard Water: Effects on Your Home

Hard water conditions in Fontana (13.5 GPG) can leave white mineral deposits on fixtures, reduce soap lather, and gradually damage water-using appliances. Water heaters are particularly vulnerable: scale insulates the heating element, raising energy costs and reducing lifespan. A water softener exchanging calcium and magnesium for sodium eliminates scale formation throughout the home. For households concerned about sodium in drinking water, pairing a softener with an RO system at the kitchen tap is the standard approach.

Explore Fontana Water Data

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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