1
At 12.8 GPG, Riverside's water qualifies as very hard. This can cause limescale in pipes and shorten appliance lifespan.
2
PFAS have been identified in Riverside's water at 3.2 parts per trillion. A reverse osmosis system is the most reliable home treatment.
3
Chlorine levels may affect the taste of Riverside's tap water. A carbon filter improves flavor.

Score

58 /100

Poor

"Good" threshold (70)

Riverside tap water is sourced from Groundwater and imported water and treated by City of Riverside Public Utilities. PFAS forever chemicals have been detected. Water hardness is very hard at 12.8 GPG which may cause scale buildup. TDS is 530 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 Riverside's 4 issues.

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MATCHED TO RIVERSIDE'S WATER DATA

Best Water Filters for Riverside, CA (2026)

Matched to PFAS Detected, Very Hard Water (12.8 GPG), Moderate Chlorine in Riverside.

PFAS Detected Very Hard Water (12.8 GPG) Moderate Chlorine

Best Overall #1 for Riverside

Clearly Filtered Water Pitcher

Pitcher Filter

$80-95

Why this fits Riverside

Removes 99%+ of PFAS detected in Riverside's water
Eliminates chlorine taste and odor from Riverside'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 Riverside

Removes 99%+ of PFAS detected in Riverside's water
Eliminates chlorine taste and odor from Riverside'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 Riverside

Removes 99%+ of PFAS detected in Riverside's water
Eliminates chlorine taste and odor from Riverside'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 Riverside

Eliminates chlorine taste and odor from Riverside'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 Riverside water data.

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City data shows averages. Your home may differ.

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Riverside Water FAQ

Is Riverside CA tap water safe to drink in 2026?

Riverside tap water meets EPA federal drinking water standards and scores 58/100 (Poor) on PurityMap for 2026. PFAS forever chemicals have been detected at 3.2 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 Riverside CA use chlorine or chloramine for disinfection?

Riverside 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 Riverside CA water and what is the TDS level?

Riverside water hardness is 12.8 grains per gallon (very hard) with a TDS of 530 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 Riverside CA drinking water?

Yes. PFAS forever chemicals have been detected in Riverside water at approximately 3.2 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 Riverside?

Based on Riverside's water profile, we recommend the Clearly Filtered Water Pitcher. Riverside: 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 San BernardinoCalifornia — 58/100 Moreno ValleyCalifornia — 58/100 FontanaCalifornia — 58/100 Chula VistaCalifornia — 61/100 San DiegoCalifornia — 61/100

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Data Sources

EPA SDWIS
EWG Tap Water Database
City of Riverside Public Utilities CCR
USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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