A95/100
DILLON VALLEY DISTRICT — Water Quality Report 2026
Serving 3,063 people · Colorado
Water Source
Surface Water
County
—
System ID
CO0159040
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – March 31, 2025Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About DILLON VALLEY DISTRICT
Is DILLON VALLEY DISTRICT water safe to drink?
DILLON VALLEY DISTRICT water receives a grade of A (95/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DILLON VALLEY DISTRICT detected?
1 contaminants were tested in DILLON VALLEY DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DILLON VALLEY DISTRICT have any EPA violations?
Yes, DILLON VALLEY DISTRICT has 2 EPA violation(s) on record, with the most recent in 2025. Violation types include MR.
How many people does DILLON VALLEY DISTRICT serve?
DILLON VALLEY DISTRICT serves approximately 3,063 people, Colorado.
What type of water does DILLON VALLEY DISTRICT provide?
DILLON VALLEY DISTRICT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CO0159040.
How does DILLON VALLEY DISTRICT compare to other utilities in Colorado?
DILLON VALLEY DISTRICT scores 95/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Colorado state page for a full comparison of water systems.