CITY REPORT CO HEALTH VIOLATIONS: 4

Louisville, CO: 4 Health Violations - Home Safety 60/100

2 ZIP codes · 5 water systems · Updated

ZipCheckup grade for Louisville: C.

A mixed picture - some signals here are worth your attention.

For residents of Louisville, CO, a C is a prompt to look up the report for their own ZIP code rather than a verdict on their tap.

How Louisville Compares

Louisville60/100
Colorado avg59/100
National avg73/100

Data: EPA SDWIS

2
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
C · 60
Avg Safety Score
Zone 1
County Radon Potential (High)
$823K
Median Home Value
$600
Est. Remediation (0.1% of home value)

Key Facts for Louisville Residents

  • Your city's water systems recorded 16 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.01 mg/L.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 8.71.

Louisville's Water Providers

Service in Louisville, CO can differ by address: 5 water systems are tied to the area in federal records, and the 3 largest are listed with their violation records.

Overview

We track home safety data for 2 ZIP codes in Louisville, Colorado (population ~33,998), covering 5 community water systems serving approximately 68,845 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 4 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Louisville: C (60/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Louisville water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0100 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

2 of 2 ZIP records with known zones are in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Surface Water Treatment Rule Treatment Technique 12 1
Interim Enhanced Surface Water Treatment Rule Treatment Technique 6 1
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1
Lead and Copper Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
80027 C 16 4 City of Louisville

All ZIP Codes in Louisville

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Louisville Community Health Snapshot

10.3%
Asthma (US: 9.8%)
7.1%
Diabetes (US: 10.4%)
15.2%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.3% ↑
Diabetes 7.1% ↓
Mental Health 15.2% ↑

Vertical line = national average. ■ Above national · ■ Below national

What's in Louisville's Water?

Surface Water Treatment Rule 12 violations
Treatment Technique
Pathogens may not be adequately removed
Interim Enhanced Surface Water Treatment Rule 6 violations
Treatment Technique
Haloacetic Acids (HAA5) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

How Remediation Costs Compare in Louisville

Relative to home values, Louisville remediation estimates run low.

Median Home Value
$822,700
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in Louisville can be compared with local home values. The $300–$1,500 estimated range can be set against the median property value; actual costs vary by home. Home values are 82% above the Colorado average.

Louisville: Lead Risk & Vulnerable Populations

0.01
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Louisville: NFIP Claim Records and Water-Quality Context

10
Total FEMA Flood Claims
$22,878
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Louisville contains 10 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $22,878. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $600 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

What You Can Do in Louisville

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. For Surface Water Treatment Rule, listed in the water-quality records for Louisville: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.

Frequently Asked Questions

What does the Home Safety Score mean for Louisville, CO?
Louisville has an average Home Safety Score of 60/100 (Grade C) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 16 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Louisville?
EPA records list 16 EPA violations, including 4 health-based violations for Louisville water systems. These water-system violations are shown for 2 mapped ZIP codes.
Does Louisville water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Louisville is 0.01 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Louisville compare to Colorado average?
Louisville has an average Home Safety Score of 60/100, which is at or above the Colorado state average of 59/100 for the same model series.
How many water systems serve Louisville?
Our records map 5 water systems to 2 ZIP codes in Louisville. The related population figure in our data is approximately 33,998 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Louisville?
Estimated remediation cost per household in Louisville: $600; modeled range $300 to $1,500. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Louisville, CO: 4 Health Violations - Home Safety 60/100. https://zipcheckup.com/cities/co/louisville/
BibTeX
@misc{zipcheckup-cities-co-louisville,
  author = {{ZipCheckup}},
  title  = {{Louisville, CO: 4 Health Violations - Home Safety 60/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/co/louisville/}
}

Page version: October 2026.

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