Larkspur, CO: 4 Health Violations — 60/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
For most households in Larkspur, CO tap water is adequate — the middle-tier grade reflects gaps in specific service areas.
How Larkspur Compares
Data: EPA SDWIS Last verified: 2026-06-03
Larkspur Water: The Quick Version
- Your city's water systems recorded 17 violations in the past 5 years.
- Average lead level: 0.001 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.
Overview
We track water quality and home safety data for 1 ZIP code in Larkspur, Colorado (population ~5,950), covering 4 community water systems serving approximately 111,987 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 4 health-based violations documented.
Home Safety Score
Average Home Safety Score for Larkspur: C (60/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Larkspur water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes 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 | 12 | 1 |
| E. coli | Microbiological | 6 | 1 |
| Lead and Copper Rule | Treatment Technique | 4 | 1 |
| Fecal Coliform | Microbiological | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 80118 | C | 17 | 4 | Perry Park Water Supply District |
All ZIP Codes in Larkspur
- 80118 [C] — 17 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
Updated daily.
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.
Climate-Related Water Risk for Larkspur
A moderate NFIP record for Larkspur — 1 insurance claim paired with 100% of ZIP codes in FEMA flood zones — points to a flood history where water-quality pathways have likely been periodically relevant.
Larkspur has a moderate flood history with 1 FEMA claims. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$3,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
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.
Deep Dive Reports
Detailed analysis for Larkspur, CO