1
At 10.8 GPG, Santa Ana's water qualifies as very hard. This can cause limescale in pipes and shorten appliance lifespan.
2
PFAS have been identified in Santa Ana's water at 3 parts per trillion. A reverse osmosis system is the most reliable home treatment.

Score

63 /100

Moderate

"Good" threshold (70)

Santa Ana tap water is sourced from Metropolitan Water District and local wells and treated by City of Santa Ana Public Works. PFAS forever chemicals have been detected. Water hardness is very hard at 10.8 GPG which may cause scale buildup. TDS is 445 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 63/100 (Moderate). Updated for 2026.

Fix Your Water

Best filters matched to Santa Ana's 3 issues.

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MATCHED TO SANTA ANA'S WATER DATA

Best Water Filters for Santa Ana, CA (2026)

Matched to PFAS Detected, Very Hard Water (10.8 GPG) in Santa Ana.

PFAS Detected Very Hard Water (10.8 GPG)

Best Overall #1 for Santa Ana

Clearly Filtered Water Pitcher

Pitcher Filter

$80-95

Why this fits Santa Ana

Removes 99%+ of PFAS detected in Santa Ana'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 PFAS

Waterdrop G3P800 Tankless RO

Tankless Reverse Osmosis

$380-450

Why this fits Santa Ana

Removes 99%+ of PFAS detected in Santa Ana'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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Also Recommended

APEC Water Systems ROES-50

Under-Sink Reverse Osmosis

$195-220

Why this fits Santa Ana

Removes 99%+ of PFAS detected in Santa Ana'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 for Hard Water

AFWFilters 5600sxt 48000 Grain Softener

Salt-Based Water Softener

$650-750

Why this fits Santa Ana

Handles Santa Ana's hard water (Very Hard Water (10.8 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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As an Amazon Associate, PurityMap may earn from qualifying purchases. Based on latest Santa Ana water data.

Full Filter Comparison for Santa Ana

Know exactly what's in YOUR tap

City data shows averages. Your home may differ.

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Explore Santa Ana Water Data

Santa Ana Water FAQ

Is Santa Ana CA tap water safe to drink in 2026?

Santa Ana tap water meets EPA federal drinking water standards and scores 63/100 (Moderate) on PurityMap for 2026. PFAS forever chemicals have been detected at 3.0 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 Santa Ana CA use chlorine or chloramine for disinfection?

Santa Ana uses chloramine as the primary disinfectant with a residual level of 1.0 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 Santa Ana CA water and what is the TDS level?

Santa Ana water hardness is 10.8 grains per gallon (very hard) with a TDS of 445 ppm (poor). 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 Santa Ana CA drinking water?

Yes. PFAS forever chemicals have been detected in Santa Ana water at approximately 3.0 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 Santa Ana?

Based on Santa Ana's water profile, we recommend the Clearly Filtered Water Pitcher. Santa Ana: 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 FontanaCalifornia — 58/100 Chula VistaCalifornia — 61/100

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Data Sources

EPA SDWIS
EWG Tap Water Database
City of Santa Ana Public Works CCR
USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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