Water Quality in 83301 — Twin Falls, ID

Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026

Your Water System

ZIP code 83301 in Twin Falls, Idaho is served by TWIN FALLS CITY OF (EPA ID: ID5420058). This system provides water to approximately 56,121 people from groundwater sources.

There are 3 community water systems serving this area.

Lead & Copper in Your Water

No Lead & Copper Rule sampling data available for systems serving this ZIP code.

Violation Summary

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for water systems serving this ZIP code:

Water Systems Serving This Area

What You Can Do

1. Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
2. Consider a home water test — Independent testing can reveal issues in your specific plumbing
3. Install a certified water filter — NSF-certified filters can address specific contaminants
4. Contact your water provider — Ask about current treatment and any ongoing remediation

Other Water Quality Reports in Idaho

• 83201 (Pocatello) — 4 violations
• 83210 (Aberdeen)
• 83211 (American Falls) — 30 violations
• 83213 (Arco) — 4 violations
• 83214 (Arimo) — 4 violations
• 83215 (Atomic City)
• 83217 (Bancroft)
• 83221 (Blackfoot) — 9 violations
• 83223 (Bloomington) — 1 violation
• 83226 (Challis) — 45 violations
• 83228 (Clifton) — 16 violations
• 83232 (Dayton) — 7 violations
• 83234 (Downey) — 2 violations
• 83236 (Firth)
• 83237 (Franklin) — 38 violations
• 83239 (Georgetown)
• 83241 (Grace) — 5 violations
• 83244 (Howe) — 1 violation
• 83245 (Inkom) — 5 violations
• 83246 (Lava Hot Springs) — 2 violations

Nearby Water Quality Reports

• 83211 (American Falls) — 78 mi — 30 violations
• 83353 (Sun Valley) — 78 mi — 63 violations
• 83210 (Aberdeen) — 88 mi
• 83213 (Arco) — 95 mi — 4 violations
• 83255 (Moore) — 96 mi — 5 violations

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for TWIN FALLS CITY OF (ID5420058) on EPA.gov.

Frequently Asked Questions

Is the tap water in 83301 safe to drink?

Twin Falls’s water system has recorded 4 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.

Where does 83301’s water come from?

The primary water source for this area is groundwater. TWIN FALLS CITY OF serves approximately 56,121 people.

How can I get my water tested?

Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.

Does 83301 have lead in the water?

No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 83301. If you are concerned about lead, contact your water utility or have your tap water independently tested.

What is the radon risk in 83301?

Radon zone data is not available for ZIP code 83301. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.