Is Norman tap water safe to drink?

Yes with good quality

Norman's tap water meets all EPA standards and scores well on our analysis. It is generally safe to drink though filtration can improve taste and provide extra precaution.

82/100
Purity Score
2
Issues Found
5.5 GPG
Hardness
Not detected
PFAS

2 Issues Detected in Norman

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Norman

Arsenic Approaching Limit (0.4 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Norman
Oklahoma

730,197,306,973,071 · Lake Thunderbird

Norman Drinking Water Quality Report

Low Risk Updated March 2026 128,026 residents
See Best Filters for Norman
82
Purity Score

This report analyzes Norman's tap water across five key indicators: PFAS, lead, hardness, chlorine, and TDS. Each section links to deeper data and filter options suited to OK water conditions.

Contaminant Levels

PFAS
ND
Lead
2.5 ppb
Nitrate
0.8 mg/L
Arsenic
0.4 mg/L
Hardness
5.5 gpg

Health Insights

  • 1
    Chlorine levels may affect the taste of Norman's tap water. A carbon filter improves flavor.

Score

82 /100
Good
"Good" threshold (70)

Norman tap water is sourced from Lake Thunderbird and treated by City of Norman Utilities. Overall purity score: 82/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to Norman's 2 issues.

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Explore Norman Water Data

PFAS Levels in NormanPFAS testing data
Norman Lead LevelsLead testing data
Water Hardness in NormanHardness levels
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OklahomaState rankings

Norman Water FAQ

Is Norman OK tap water safe to drink in 2026?
Norman tap water meets EPA federal drinking water standards and scores 82/100 (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 Norman OK use chlorine or chloramine for disinfection?
Norman 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 Norman OK water and what is the TDS level?
Norman water hardness is 5.5 grains per gallon (moderate) with a TDS of 195 ppm (fair). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Norman OK drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Norman drinking water.
What is the best water filter for Norman?
Based on Norman's water profile, we recommend the Clearly Filtered Water Pitcher. Norman has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Nearby Reports

Oklahoma CityOklahoma — 82/100TulsaOklahoma — 82/100Broken ArrowOklahoma — 82/100EdmondOklahoma — 82/100LawtonOklahoma — 82/100

All Oklahoma cities

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • City of Norman Utilities CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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