Skip to main content
WaterSafeCheck
EPA SDWIS City OverviewWater Testing & Safety Guide

Milliken, CO Water Quality Testing & Safety Report

EPA compliance records, water testing guidelines, and hardness metrics for all 1 ZIP code in Milliken, Colorado

Quick EPA Verified Summary

Is Tap Water Safe to Drink in Milliken, CO?

Tap water in Milliken, CO receives an EPA Safety Grade of C (65/100) due to 0 health-based violation(s) and elevated lead risk. While treated by local utilities, residents are advised to test tap water and use an NSF/ANSI 53 certified filter for drinking and cooking.

Average Score

65/100

Health Violations

0

Water Hardness

Moderately Hard

105 mg/L (6.1 GPG)

High Lead Risk

0

of 1 ZIP codes

C

About Tap Water in Milliken, CO

Drinking water in Milliken, CO receives an average water quality grade of C (score: 65/100) across its 1 ZIP code. Safe Drinking Water Act compliance monitoring is managed by local utilities including Milliken Town of.

Water Quality Testing in Milliken, CO

Tap Water & Well Water Testing Recommendations

Testing your drinking water in Milliken confirms whether contaminants like lead, nitrates, bacteria, and PFAS are entering your home. While municipal utilities test water before distribution, private plumbing and private well systems require homeowner testing.

Tap Water Testing Checklist

  • 1.Identify your plumbing age: Homes built before 1986 in Milliken may have lead solder or lead service lines.
  • 2.Request your utility's latest Consumer Confidence Report (CCR) for annual municipal baseline data.
  • 3.Use an EPA-certified laboratory or state-certified test kit for precision lead and PFAS detection (standard DIY strips cannot reliably measure trace heavy metals).
  • 4.Collect a "first draw" sample: Test water that has sat motionless in pipes for at least 6 hours to check for plumbing corrosion.

Private Well Water Testing Checklist

  • •Private wells in CO are not monitored by the EPA or Colorado Department of Public Health and Environment — testing is 100% the homeowner's responsibility.
  • •Annual Test: Screen for Total Coliform Bacteria, E. coli, Nitrates/Nitrites, and pH every spring.
  • •Comprehensive Test (Every 3-5 Years): Test for heavy metals (Lead, Arsenic, Uranium), Volatile Organic Compounds (VOCs), and Hardness.
  • •Post-Disruption Testing: Immediately test well water following heavy floods, local construction, agricultural runoff, or sudden taste/odor changes.

Critical Water Testing Parameters for Milliken Residents

ParameterHealth ReasonEPA Limit / Standard
Lead (Pb)Plumbing corrosion; dangerous neurotoxin for children15 ppb (Action Level) / 0 ppb Goal
Total Coliform & E. ColiBacterial contamination from sewage or surface runoff0 mg/L (Zero Tolerance)
Nitrates / NitritesFertilizer and septic tank seepage; causes blue baby syndrome10 mg/L (MCL)
Water Hardness (Ca & Mg)Affects appliance lifespan, scale buildup, and skin hydrationModerate (~100 mg/L)
PFAS ("Forever Chemicals")Industrial non-stick chemicals linked to metabolic and immune issues4.0 ppt (EPA 2024 Rule)
State Regulatory Oversight: Environmental standards and certified water lab registries in CO are maintained by the Colorado Department of Public Health and Environment.

Water Quality by ZIP Code — Milliken, CO

Showing 1 of 1 monitored ZIP code in Milliken

C
80543

Milliken, CO

Score: 65/100✓ Clean Record

All Milliken, CO ZIP Code Reports (1 Total)

80543

Nearby Cities Water Quality & Testing in Colorado

Compare tap water safety, EPA test scores, and water hardness across neighboring cities in Colorado:

Agate, CO1 ZIP code
Grade C
Akron, CO1 ZIP code
Grade C
Alamosa, CO2 ZIP codes
Grade B
Aguilar, CO1 ZIP code
Grade C
Allenspark, CO1 ZIP code
Grade D
Almont, CO1 ZIP code
Grade C
Alma, CO1 ZIP code
Grade C
Amherst, CO1 ZIP code
Grade D

Frequently Asked Questions — Milliken Water Quality & Testing

Is tap water safe to drink in Milliken, CO?+
Tap water in Milliken has a grade of C, indicating compliance concerns in recent years. Families with young children or pregnant women should consider using a certified NSF/ANSI 53 water filter for drinking and cooking.
How do I test water quality in Milliken, CO?+
To test water quality in Milliken, you can order an EPA-compliant drinking water test kit or submit samples to a state-certified environmental testing laboratory in CO. Testing is especially recommended for homes built before 1986 (to check for lead in plumbing) and for properties with private well systems.
Should I test private well water in Milliken?+
Yes. Unlike municipal tap water, private wells in Milliken, CO are not monitored or regulated by the EPA or local utilities. Private well owners are responsible for testing their water annually for coliform bacteria and nitrates, and every 3 to 5 years for heavy metals (lead, arsenic) and volatile organic compounds.
How hard is the tap water in Milliken?+
Tap water in Milliken is classified as Moderately Hard with an estimated average hardness of 105 mg/L (6.1 GPG). A water softener is generally optional.
What is the water quality score for Milliken?+
The average water quality score across 1 ZIP code in Milliken, CO is 65/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Milliken have lead in its tap water?+
Lead risk ratings in Milliken are relatively low based on EPA monitoring data. However, lead in home plumbing is a separate concern — if your home was built before 1986, individual tap testing is recommended.
Where does Milliken's tap water come from?+
Tap water in Milliken, CO primarily comes from surface water. Surface water systems treat water from rivers, lakes, or reservoirs using filtration, sedimentation, and disinfection before it reaches your tap.

Looking for water quality reports in other cities in Colorado?

View All Cities & ZIPs in Colorado