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F0/100

PARKER WSD — Water Quality Report 2026

Serving 75,949 people · Colorado

Water Source
Surface Water
County
—
System ID
CO0118040
Violations
198

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
320.00 mg/L1.30 mg/LOver Limit
Lead (90th percentile)
0.002 mg/L0.015 mg/LAbove Goal

EPA Violation History

7

Violations (last 5yr)

2

Unresolved

0

Health-Related

TIER 3Unresolved

Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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: July 1, 2024 – July 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Unresolved

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: July 1, 2024 – July 31, 2024Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Violation related to E. coli (RTCR)

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: February 1, 2024 – February 29, 2024Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2023 – September 30, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2022 – August 12, 2022Enforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – December 31, 2021Rule: Ground Water RuleEnforcement: 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 PARKER WSD

Is PARKER WSD water safe to drink?

PARKER WSD water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 198 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has PARKER WSD detected?

70 contaminants were tested in PARKER WSD's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).

Does PARKER WSD have any EPA violations?

Yes, PARKER WSD has 198 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, Other. 3 are health-based violations.

How many people does PARKER WSD serve?

PARKER WSD serves approximately 75,949 people, Colorado.

What type of water does PARKER WSD provide?

PARKER WSD 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 CO0118040.

How does PARKER WSD compare to other utilities in Colorado?

PARKER WSD scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Colorado state page for a full comparison of water systems.