Is Plymouth tap water safe to drink?

Yes but with caveats

Plymouth's water meets EPA minimum standards but has some concerns. Filtration is recommended for sensitive individuals.

73/100

Purity Score

Issues Found

18.5 GPG

Hardness

Not detected

PFAS

3 Issues Detected in Plymouth

Very Hard Water (18.5 GPG)

Hard water causes scale in pipes and shortens appliance lifespan.

Hardness data for Plymouth

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Plymouth

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Plymouth

Fix Your Water — See Recommended Filters

Minnesota

554,415,544,255,447 · Groundwater Prairie du Chien aquifer

Plymouth Tap Water Analysis (Hard Water)

Moderate Risk Updated March 2026 79,828 residents

See Best Filters for Plymouth

Purity Score

Water from Plymouth's Groundwater Prairie du Chien aquifer supply carries notable mineral levels. This 2026 report covers hardness data, safety indicators, and filtration options matched to local conditions.

Water Quality Data

Very hard softener recommended.

Hard water in Plymouth

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

Lead

2 ppb

Nitrate

1.2 mg/L

Arsenic

0.2 mg/L

Hardness

18.5 gpg

Health Insights

1
With a hardness of 18.5 GPG, Plymouth residents may notice white scale on faucets. Hard water increases maintenance costs.
2
Chlorine levels may affect the taste of Plymouth's tap water. A carbon filter improves flavor.

Score

73 /100

Moderate

"Good" threshold (70)

Plymouth tap water is sourced from Groundwater Prairie du Chien aquifer and treated by City of Plymouth Water. Water hardness is very hard at 18.5 GPG which may cause scale buildup. TDS is 680 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 73/100 (Moderate). Updated for 2026.

Fix Your Water

Best filters matched to Plymouth's 3 issues.

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MATCHED TO PLYMOUTH'S WATER DATA

Best Water Filters for Plymouth, MN (2026)

Matched to Very Hard Water (18.5 GPG), Moderate Chlorine in Plymouth.

Very Hard Water (18.5 GPG) Moderate Chlorine

Best Overall #1 for Plymouth

AFWFilters 5600sxt 48000 Grain Softener

Salt-Based Water Softener

$650-750

Why this fits Plymouth

Handles Plymouth's hard water (Very Hard Water (18.5 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

Fix Your Water — Check Price

Best Value

Clearly Filtered Water Pitcher

Pitcher Filter

$80-95

Why this fits Plymouth

Eliminates chlorine taste and odor from Plymouth'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

Check Price on Amazon

Best for Taste

Waterdrop 10UA Under-Sink Filter

Under-Sink Carbon Filter

$40-60

Why this fits Plymouth

Eliminates chlorine taste and odor from Plymouth'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

Also Recommended

Waterdrop G3P800 Tankless RO

Tankless Reverse Osmosis

$380-450

Why this fits Plymouth

Eliminates chlorine taste and odor from Plymouth'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

Check Price on Amazon

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

Full Filter Comparison for Plymouth

Know exactly what's in YOUR tap

City data shows averages. Your home may differ.

Test Your Water — $25-30

About Plymouth's Water

Plymouth Hard Water: Effects on Your Home

Hard water conditions in Plymouth (18.5 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 Plymouth Water Data

Plymouth Water FAQ

Is Plymouth MN tap water safe to drink in 2026?

Plymouth tap water meets EPA federal drinking water standards and scores 73/100 (Moderate) 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 Plymouth MN use chlorine or chloramine for disinfection?

Plymouth uses chloramine as the primary disinfectant with a residual level of 1.2 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 Plymouth MN water and what is the TDS level?

Plymouth water hardness is 18.5 grains per gallon (very hard) with a TDS of 680 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 Plymouth MN drinking water?

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

What is the best water filter for Plymouth?

Based on Plymouth's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Plymouth has very hard water (18.5 GPG) and elevated chlorine. A whole-house carbon plus softener system handles both.

Nearby Reports

RochesterMinnesota — 73/100 MinneapolisMinnesota — 79/100 Saint PaulMinnesota — 79/100 BloomingtonMinnesota — 79/100 Brooklyn ParkMinnesota — 79/100 DuluthMinnesota — 85/100

All Minnesota cities

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Compare across all 50 US states

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

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