Is Saint Paul tap water safe to drink?

Yes but with caveats

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

79/100
Purity Score
3
Issues Found
8.5 GPG
Hardness
Not detected
PFAS

3 Issues Detected in Saint Paul

Moderately Hard Water (8.5 GPG)

Hardness above 7 GPG can cause minor scale buildup.

Hardness data for Saint Paul

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Saint Paul

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Saint Paul
Minnesota

551,015,510,255,103 · Mississippi River

Drinking Water in Saint Paul: 2026 Analysis

Moderate Risk Updated March 2026 400,000 residents
79
Purity Score

Water from Saint Paul's Mississippi River supply carries notable mineral levels. This 2026 report covers hardness data, safety indicators, and filtration options matched to local conditions.

Health Insights

  • 1
    At 8.5 GPG, Saint Paul's water qualifies as moderately hard. This can cause limescale in pipes and shorten appliance lifespan.
  • 2
    Chlorine levels may affect the taste of Saint Paul's tap water. A carbon filter improves flavor.

Score

79 /100
Good
"Good" threshold (70)

Saint Paul tap water is sourced from Mississippi River and treated by Saint Paul Regional Water Services. Water hardness is hard at 8.5 GPG which may cause scale buildup. Overall purity score: 79/100 (Good). Updated for 2026.

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Best filters matched to Saint Paul's 3 issues.

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About Saint Paul's Water

Saint Paul Hard Water: Effects on Your Home

Hard water conditions in Saint Paul (8.5 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 Saint Paul Water Data

Saint Paul Water FAQ

Is Saint Paul MN tap water safe to drink in 2026?
Saint Paul tap water meets EPA federal drinking water standards and scores 79/100 (Good) 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 Saint Paul MN use chlorine or chloramine for disinfection?
Saint Paul uses chloramine as the primary disinfectant with a residual level of 1.4 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 Saint Paul MN water and what is the TDS level?
Saint Paul water hardness is 8.5 grains per gallon (hard) with a TDS of 280 ppm (fair). 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 Saint Paul MN drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Saint Paul drinking water.
What is the best water filter for Saint Paul?
Based on Saint Paul's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Saint Paul has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Nearby Reports

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Saint Paul Regional Water Services CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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