D29/100
Castle Pines Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 12,800 residents · Colorado
What's In Castle Pines's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
5
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Violation related to Turbidity
When: March 1, 2023 – August 27, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Violation related to Turbidity
When: August 30, 2022 – October 10, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Other Violation
When: April 29, 2022 – May 9, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
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, 2022 – March 31, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – August 6, 2021Enforcement: 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
Water Utility Details
CASTLE PINES NORTH MD
Population Served
12,800
Water Source
Purchased Surface Water
System ID
CO0118006
Frequently Asked Questions About Castle Pines Water
Is Castle Pines tap water safe to drink?
Castle Pines, Colorado tap water receives a grade of D (29/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 71 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Castle Pines's water?
31 contaminants were tested in Castle Pines's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Castle Pines have any water quality violations?
Yes, Castle Pines has 71 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Castle Pines?
Castle Pines water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Castle Pines's tap water come from?
Castle Pines's drinking water is sourced from purchased surface water and supplied by CASTLE PINES NORTH MD. The system serves approximately 12,800 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Castle Pines's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Castle Pines's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Castle Pines's water compare to other cities in Colorado?
Castle Pines's water quality score of 29/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Colorado state page to see how all cities in the state compare.
What should I do if I'm concerned about Castle Pines's water quality?
If you have concerns about Castle Pines's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (CASTLE PINES NORTH MD) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.