ZipCheckup grade for 51577: C.

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Water Quality Report
C 66

Walnut, IA (51577): 1 Violation Recorded for Mapped Water Systems - 66/100

EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Urban Bluffs - North)

PFAS Detected High County Radon Potential

EPA records for the water systems mapped to 51577 in Walnut, IA contain 1 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
C 66/100
Water Quality Concerns 1 non-health-based violation record in EPA data
Lead Risk Below action level 0.002 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History N/A
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 1 violation (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result of 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
Contaminant Summary
Violations on record (not health-based)
1 violation PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
C
ZIP-level Home Safety model score: 66 / 100
Bottom 29% of U.S. ZIP codes
2
Water Systems
1,558
People Served
0
Health Violations (since 2021)
Surface water
Water Source
0.002 mg/L
Reported Lead Result
Zone 1
County Radon Potential · High
$113K
Median Home Value26% below state median ($152K)

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Score Breakdown

Overall Home Safety Score: 66/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
98/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
99/100
Indoor environment
0/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (6) HIGH

Your Water System

ZIP code 51577 in Walnut, Iowa is mapped to the water system Urban Bluffs - North (EPA ID: IA7820701). This system provides water to approximately 1,558 people from surface water sources.

There are 2 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Urban Bluffs - North IA7820701 1,558 Surface water
Regional Water IA8300184 4,132 Surface water

Other Water Quality Reports in Iowa

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Urban Bluffs - North (IA7820701) on EPA.gov.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 51577.

Detected compounds: PFPeA, PFBS, PFHxA.

Highest measured level: 0.0045 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (10) HIGH
Home & Infrastructure (6) HIGH

Possible home maintenance concerns - talk to a local expert.

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Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Walnut

Based on local data for ZIP 51577, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Gutter Installation & Repair

The median home in 51577 was built around 1901. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Window Replacement

The median build year of homes in Walnut is 1901; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.

Typical cost: Window replacement: typically $300–$800 per window installed

Estimate Your Home Maintenance Costs

Roofing Inspection & Repair

Homes built around 1901 may be on their second or third roof. A professional inspection can catch damage before leaks start.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 51577 safe to drink?

EPA SDWIS records 1 violation since 2021 across the water systems mapped to ZIP 51577 (primary system: Urban Bluffs - North), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 51577's water come from?

The recorded water source for Urban Bluffs - North, a system mapped to ZIP code 51577, is Surface water. This system serves approximately 1,558 people.

How does Walnut water compare to the national average?

Walnut's Home Safety Score ranks lower than 71% of U.S. ZIP codes, and lower than 71% of ZIP codes within Iowa.

How can I get my water tested in Walnut?

If Urban Bluffs - North supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 51577 tap water?

The Lead and Copper Rule record selected for 51577 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 51577?

51577 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Pottawattamie County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 51577's water?

Yes, PFAS have been detected in samples from water systems mapped to 51577. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

How to cite this page

APA ZipCheckup. (2026). Walnut, IA (51577): 1 Violation Recorded for Mapped Water Systems - 66/100. https://zipcheckup.com/report/51577/
BibTeX 
@misc{zipcheckup-report-51577,
  author = {{ZipCheckup}},
  title  = {{Walnut, IA (51577): 1 Violation Recorded for Mapped Water Systems - 66/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/51577/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 51577

ZIP Code City, State Distance Grade Violations
51552 Marne, IA 6.3 mi N/A 0
51521 Avoca, IA 7.0 mi C 1
51593 Harlan, IA 7.9 mi N/A 0
51536 Hancock, IA 8.5 mi N/A 0
51531 Elk Horn, IA 11.3 mi N/A 0
50022 Atlantic, IA 11.6 mi N/A 0
51570 Shelby, IA 12.8 mi N/A 1
51560 Oakland, IA 13.3 mi N/A 0
51537 Harlan, IA 13.4 mi N/A 0
51544 Lewis, IA 14.0 mi N/A 0

Contaminants Detected in 51577

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 12/17 risk factors Data sources →
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