ZipCheckup grade for 80127: D.

Federal records show several conditions worth reviewing.

Your top priority: match a filter's certification to the violations (11 health-based violations). Check your ZIP → NSF certified filters

Health Violations Found
D 53

Littleton, CO (80127): 11 Health-Based Violations Recorded for Mapped Water Systems - 53/100

EPA data combined for 7 water systems mapped to this ZIP (largest mapped system: Southwest Metropolitan Water Supply District)

Health Violations Found High County Radon Potential

Health-based violation records by water system:

EPA records for the water systems mapped to 80127 in Littleton, CO contain 33 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 11 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
D 53/100
Water Quality Issues 11 health-based violation records
Lead Risk Moderate 0.009 mg/L, 90th percentile, sample period ending 2002-12-31
NFIP Claim History Claim records 9 claims
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 11 health-based violations and 22 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.009 mg/L is below the EPA action level, but EPA's health goal for lead is zero; filtration is advisable.
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
  • Flood 9 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
Contaminant Summary
Health Violations
33 violations 11 health-based 1 risk identified
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 Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
D
ZIP-level Home Safety model score: 53 / 100
Bottom 13% of U.S. ZIP codes
7
Water Systems
48,648
People Served
11
Health Violations (since 2021)Median is 0
Surface water
Water Source
0.009 mg/L
Reported Lead Result3.9× the national median for this measure
Zone 1
County Radon Potential · High
$664K
Median Home Value55% above state median ($430K)

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Score Breakdown

Overall Home Safety Score: 53/100

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
16/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
58/100
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 (8) CRITICAL

Your Water System

ZIP code 80127 in Littleton, Colorado is mapped to the water system Southwest Metropolitan Water Supply District (EPA ID: CO0103723). This system provides water to approximately 48,648 people from surface water sources.

There are 7 community water systems serving this area.

Lead & Copper in Your Water

The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.

Metal Measured Level EPA Action Level Status Sample Date or Period
Copper Action-level exceedance on record 1.3 mg/L Exceeds action level Not present in ZipCheckup accepted source data
How to read the copper row. EPA's reporting schema defines the copper CU90 code as an action-level exceedance (a system's 90th-percentile copper above the 1.3 mg/L action level), so this row reflects an exceedance on record, not a routine measurement. No copper concentration is shown because no verified unit is available for this value. A system with no copper record has not been shown to be clean: the absence of a recorded exceedance is not a measurement.

Water Systems Serving This Area

System Name EPA ID Population Source
Southwest Metropolitan Water Supply District CO0103723 48,648 Surface water
Ken Caryl Water Supply District CO0103075 12,000 Surface water
Willowbrook Water Supply District CO0130843 9,348 Surface water
Lakehurst Water Supply District CO0130466 12,000 Surface water
Meadowbrook Water District CO0130500 3,290 Surface water

Other Water Quality Reports in Colorado

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 Southwest Metropolitan Water Supply District (CO0103723) 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 →

Health Risks from Detected Contaminants

Gross Alpha Particle Activity

High Risk

EPA reference value: pCi/L · 11 violations on record

Increased cancer risk from radioactive particles

At-risk groups: long-term residents in areas with uranium or radium-rich geology, people on private wells in western US

Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, ion exchange, lime softening · Find a filter →

📊 EPA SDWIS + SDWA · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) MODERATE

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 Littleton

Based on local data for ZIP 80127, these services may benefit homeowners in your area.

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

Home & Flood Insurance

The ZIP code for this report in Littleton has 9 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

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 80127 safe to drink?

EPA SDWIS records 33 violations since 2021 across the water systems mapped to ZIP 80127 (primary system: Southwest Metropolitan Water Supply District), including 11 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 80127's water come from?

The recorded water source for Southwest Metropolitan Water Supply District, a system mapped to ZIP code 80127, is Surface water. This system serves approximately 48,648 people.

How does Littleton water compare to the national average?

Littleton's Home Safety Score ranks lower than 87% of U.S. ZIP codes, and lower than 73% of ZIP codes within Colorado.

How can I get my water tested in Littleton?

If Southwest Metropolitan Water Supply District 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 80127 tap water?

The Lead and Copper Rule record selected for 80127 reports a 90th-percentile lead result of 0.009 mg/L for a water system mapped to this ZIP (record date 2002-12-31). 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 80127?

80127 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Jefferson County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

What does the NFIP claim history show for ZIP 80127?

FEMA records contain 9 flood insurance claims filed in ZIP code 80127; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Littleton, CO (80127): 11 Health-Based Violations Recorded for Mapped Water Systems - 53/100. https://zipcheckup.com/report/80127/
BibTeX 
@misc{zipcheckup-report-80127,
  author = {{ZipCheckup}},
  title  = {{Littleton, CO (80127): 11 Health-Based Violations Recorded for Mapped Water Systems - 53/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/80127/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 80127

ZIP Code City, State Distance Grade Violations
80465 Morrison, CO 2.6 mi D 55
80128 Littleton, CO 2.6 mi C 0
80123 Littleton, CO 3.0 mi C 40
80235 Denver, CO 4.8 mi C 34
80227 Denver, CO 5.7 mi C 35
80160 Littleton, CO 6.4 mi N/A 0
80161 Littleton, CO 6.4 mi N/A 0
80165 Littleton, CO 6.4 mi N/A 0
80166 Littleton, CO 6.4 mi N/A 0
80236 Denver, CO 6.6 mi C 40

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