Water Quality in La Salle, CO: No Violations - Grade D
Grade D · Score 45/100 · 5 water systems · Updated 2026-07-18
La Salle's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-07-18
A clean federal EPA record is what the data shows for La Salle, CO - 5 systems tracked across the full available compliance history, with no MCL exceedances, no unresolved monitoring gaps, and no enforcement proceedings documented at any stage.
Water Quality by ZIP Code in La Salle
La Salle is covered by a single ZIP code, so one water-quality profile applies citywide. See the contaminant data below.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 80645 | D | 45 | 0 | 0 | View report → |
Water Quality Overview
La Salle, Colorado receives a water quality grade of D with an overall score of 45 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
No EPA violations have been recorded for the 5 water systems serving La Salle. This is a positive indicator, though it does not guarantee the absence of all contaminants - some substances (like PFAS) are not yet fully regulated.
What Grade D Means
A grade of D indicates significant compliance issues. La Salle's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.
Lead Levels
Lead testing data for La Salle is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.
With 69% of homes built before 1986, La Salle has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
La Salle is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving La Salle
La Salle is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 4,970 people across 1 ZIP code.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving La Salle. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in La Salle
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving La Salle. Recent actions:
| Date | Action Type |
|---|---|
| 2025-10-01 | State Informal Action |
| 2025-10-01 | State Informal Enforcement |
| 2024-10-16 | State Order Extension |
| 2024-10-15 | State Informal Action |
| 2024-10-15 | State Informal Enforcement |
| 2023-08-14 | State Informal Action |
| 2023-08-14 | State Informal Enforcement |
| 2023-07-26 | State Order Extension |
| 2023-07-18 | State Informal Action |
| 2023-07-18 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-10-01.
La Salle vs. Nearby Colorado Cities
How La Salle's water quality compares to similar cities in Colorado:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| La Salle | D | 0 | 5 | 4,970 |
| Vail | B | 0 | 1 | 4,971 |
| Walsenburg | D | 43 | 5 | 4,810 |
| Olathe | C | 2 | 4 | 5,139 |
Common Questions About La Salle Water
These are the most common questions residents search for about water quality in La Salle, Colorado:
Is La Salle water hard or soft? Water hardness varies by source. La Salle's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink La Salle tap water? La Salle's water receives a grade of D (45/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for La Salle? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
La Salle vs. Colorado Average
Understanding how La Salle compares to the broader Colorado average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within La Salle.
ZIP Codes in La Salle
La Salle spans 1 ZIP code. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
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
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.