Is Hammond tap water safe to drink?

Yes but with caveats

Hammond'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 Hammond

Moderately Hard Water (8.5 GPG)

Hardness above 7 GPG can cause minor scale buildup.

Hardness data for Hammond

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Hammond

Arsenic Approaching Limit (0.3 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Hammond
Indiana

463,204,632,346,324 · Lake Michigan via Indiana American Water

Drinking Water in Hammond: 2026 Analysis

Moderate Risk Updated March 2026 77,879 residents
79
Purity Score

Mineral content in Hammond's water supply rates as moderately hard. This guide covers what that means for your home and which filters or softeners address it best.

Health Insights

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

Score

79 /100
Good
"Good" threshold (70)

Hammond tap water is sourced from Lake Michigan via Indiana American Water and treated by Hammond Sanitary District. Water hardness is hard at 8.5 GPG which may cause scale buildup. Overall purity score: 79/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to Hammond's 3 issues.

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About Hammond's Water

Hard Water in Hammond: Impact on Plumbing and Appliances

At 8.5 grains per gallon, Hammond's water qualifies as hard. Hard water carries dissolved calcium and magnesium that deposit as limescale inside pipes, water heaters, dishwashers, and washing machines over time. Scale accumulation reduces appliance efficiency and shortens service life. A salt-based water softener is the most effective solution for whole-home protection. For drinking water only, a reverse osmosis system also reduces mineral content significantly.

Explore Hammond Water Data

Hammond Water FAQ

Is Hammond IN tap water safe to drink in 2026?
Hammond 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 Hammond IN use chlorine or chloramine for disinfection?
Hammond uses chloramine as the primary disinfectant with a residual level of 1.7 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 Hammond IN water and what is the TDS level?
Hammond water hardness is 8.5 grains per gallon (hard) with a TDS of 215 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 Hammond IN drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Hammond drinking water.
What is the best water filter for Hammond?
Based on Hammond's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Hammond has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Hammond Sanitary District CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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