Larkspur, CO: PFAS Found in Water - Home Safety 50/100
1 ZIP code · 4 water systems · Updated
ZipCheckup grade for Larkspur: D.
Several federal signals point to home-safety risks in this ZIP.
Drinking water quality in Larkspur has lagged behind CO benchmarks - documented violations keep the safety grade low.
How Larkspur Compares
Data: EPA SDWIS
Larkspur Water: The Quick Version
- Your city's water systems recorded 47 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 31% - older plumbing may contain lead solder.
- Estimated remediation: $3,600 per household.
- CDC health risk index: 9.36.
Water Systems Serving Larkspur
Water supply in Larkspur, CO follows a divided structure: 3 utilities account for the largest share of residential service out of 4 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
- D
- D
- D
Overview
We track home safety data for 1 ZIP code in Larkspur, Colorado (population ~5,950), covering 4 community water systems serving approximately 115,625 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 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 Larkspur: D (50/100)
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
Larkspur water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 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
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Gross Beta | Radionuclides | 16 | 1 |
| E. coli | Microbiological | 10 | 1 |
| Lead and Copper Rule | Treatment Technique | 6 | 1 |
| Gross Alpha | Radionuclides | 4 | 1 |
| Combined Radium | Radionuclides | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 80118 | D | 47 | 4 | Perry Park Water Supply District |
All ZIP Codes in Larkspur
- 80118 [D] - 47 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Larkspur
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Larkspur
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Larkspur's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Larkspur's residential inventory spans multiple construction eras, with the median build year of 1993 landing in a zone where pre- and post-1986 homes are both well represented. That split matters because homes built before 1986 may contain lead-soldered copper joints - a plumbing practice banned that year - while those built before 1970 face the additional possibility of lead pipes in the service line. Whether a specific household sits on the older or newer end of this distribution is the primary variable shaping its individual exposure risk.
Most homes in Larkspur were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Larkspur: Remediation Cost in Perspective
Low proportionality - that's the Larkspur picture when remediation costs are placed against typical home equity.
Remediation costs in Larkspur are relatively low compared to home values. The $2,300–$5,500 estimated range is a small fraction of median property value. Home values are 83% above the Colorado average.
Protecting Children from Lead in Larkspur
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Households with kids in the home - for whom CDC guidance places particular weight on minimizing exposure - face a specific local picture in Larkspur. 31% of homes here come from the pre-rule era, and aggregate utility samples either approach or cross 0.015 mg/L. A baseline draw-test kit and certified lead-removal filtration are available via retailer networks for households confirming conditions at a specific tap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Larkspur
Historical NFIP data for Larkspur contains 1 flood insurance claim. Among ZIP codes with claim records, 0% 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 <strong>$3,600</strong> 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 Larkspur
- Test your water at home. City-level data shows averages - your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Gross Beta can reduce the most common contaminant found in Larkspur's water.
- Check your home's plumbing. With 31% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Larkspur, CO