Is Indianapolis tap water safe to drink?

Yes but with caveats

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

75/100
Purity Score
3
Issues Found
13.7 GPG
Hardness
Not detected
PFAS

3 Issues Detected in Indianapolis

Very Hard Water (13.7 GPG)

Hard water causes scale in pipes and shortens appliance lifespan.

Hardness data for Indianapolis

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Indianapolis

Arsenic Approaching Limit (0.3 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Indianapolis
Indiana

462,014,620,246,203 · White River and Fall Creek

Is Indianapolis Water Hard? Full Report (2026)

Moderate Risk Updated March 2026 900,000 residents
75
Purity Score

Water from Indianapolis's White River and Fall Creek supply carries notable mineral levels. This 2026 report covers hardness data, safety indicators, and filtration options matched to local conditions.

Health Insights

  • 1
    With a hardness of 13.7 GPG, Indianapolis residents may notice white scale on faucets. Hard water increases maintenance costs.
  • 2
    Chlorine levels may affect the taste of Indianapolis's tap water. A carbon filter improves flavor.

Score

75 /100
Good
"Good" threshold (70)

Indianapolis tap water is sourced from White River and Fall Creek and treated by Citizens Energy Group. Water hardness is very hard at 13.7 GPG which may cause scale buildup. TDS is 470 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 75/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to Indianapolis's 3 issues.

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About Indianapolis's Water

Hard Water in Indianapolis: Impact on Plumbing and Appliances

At 13.7 grains per gallon, Indianapolis's water qualifies as very 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 Indianapolis Water Data

Indianapolis Water FAQ

Is Indianapolis IN tap water safe to drink in 2026?
Indianapolis tap water meets EPA federal drinking water standards and scores 75/100 (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 Indianapolis IN use chlorine or chloramine for disinfection?
Indianapolis uses chloramine as the primary disinfectant with a residual level of 1.6 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 Indianapolis IN water and what is the TDS level?
Indianapolis water hardness is 13.7 grains per gallon (very hard) with a TDS of 470 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 Indianapolis IN drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Indianapolis drinking water.

Nearby Reports

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Citizens Energy Group CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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