WaterVerge

Is Colorado City, CO Tap Water Safe to Drink?

Graded F — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓

3K residents served 1 water system PWSID: CO0151200
Overall Score
42 / 100
Violations
30 active
Last Updated
May 2026
Source
Surface water
#223 of 246 in Colorado Top 95% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
FGRADE
Water Quality Grade
42/100
waterverge.com
F 42/100

Colorado City, CO — Water Quality Report

Colorado City's drinking water received a grade of F (42 out of 100), indicating failing water quality. The city's 1 water system serves approximately 2,755 residents using surface water.

Lead levels were measured at 3.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.

The system has 132 violations on record, including 34 health-based violations. 30 remain unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Colorado City's water

Colorado City ranks #223 out of 246 cities in Colorado for water quality, placing it among the lowest-rated in the state.

The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.

As a small community water system, Colorado City may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

The system has seen 63 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.

Quality Breakdown

Water quality score

See methodology →
42 out of 100 Grade F
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
0/45
F
Historical violation record including health-based and monitoring violations.
Lead & Copper
16/20
B
Lead at 3.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
5/10
D
Monitoring and reporting compliance with EPA regulations.
Source Risk
4/5
B
Water source: Surface water.
Water Safety

Is Colorado City, CO water safe to drink?

Concerns Identified

Colorado City's drinking water has significant quality concerns based on EPA testing data. With a grade of F (42/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,755 residents using surface water (rivers, lakes, or reservoirs).

30
Active Violations
3.0 ppb
Lead (90th %ile)
5 events
Disaster History

Recent water quality updates for Colorado City

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Colorado City's water quality assessment. Grade: F (42/100).

Violation
1 drinking water violation recorded

Contaminants: Lead and Copper Rule.

Violation
1 drinking water violation recorded

Contaminants: Public Notice.

Violation
1 drinking water violation recorded

Contaminants: Public Notice.

Disaster
SEVERE STORMS, TORNADOES, FLOODING, LANDSLIDES, AND MUDSLIDES

Federal disaster declaration (FEMA DR-4229). Flood event — may have impacted local water infrastructure.

Disaster
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES

Federal disaster declaration (FEMA DR-3365). Flood event — may have impacted local water infrastructure.

Key contaminant findings

Based on the most recent EPA sampling data for Colorado City's water supply.

Lead Within Limits
Detected: 3.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Copper Exceeds Limit
Detected: 1.50 mg/L Limit: 1.3 mg/L (EPA Action Level)

Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.

Violation history

Colorado City's water system has 132 total violations on record, including 34 health-based violations. 30 remain unresolved. 63 violations were issued in the last 5 years.

MROtherTTMCLMRDL
Most recent violations:
Jan 2026 Lead and Copper Rule Open
Dec 2025 Public Notice Open
Aug 2025 Public Notice Open
May 2025 Total Haloacetic Acids (HAA5) Open
Apr 2025 Surface Water Treatment Rule Resolved

Flood & environmental risk

Pueblo County has experienced 5 federally declared disasters since 1973. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.

SEVERE STORMS, TORNADOES, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA DR-4229
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA DR-3365
HURRICANE KATRINA EVACUATION
Coastal Storm FEMA DR-3224

Where does Colorado City's water come from?

Colorado City's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 2,755 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.

What Colorado City residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Colorado City's water.

Request your utility's CCR

Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.

Monitor alerts during storms

Colorado City's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.

Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
3.0 ppb
EPA Action Level: 15 ppb · 20% of limit
Safe Level
Copper (90th percentile)
Inorganic
Over Limit
1.50 mg/L
EPA Action Level: 1.3 mg/L · +15% over limit
Exceeds Limit
Compliance Record

Violation summary

132
Total violations
34
Health-based
30
Active / unresolved
Jan 2026
Most recent violation
Compliance Record

Violations & advisories

132 Total
30 Active
34 Health-based
102 Resolved
21 SNC
Violations by category
Stage 2 Disinfectants and Disinfection Byproducts Rule
35
Stage 1 Disinfectants and Disinfection Byproducts Rule
24
Public Notice Rule and Revised PN Rule
14
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
13
Surface Water Treatment Rule
9
Jan 2026 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Dec 2025 Active
Public Notice
Other Violation 0
Aug 2025 Active
Public Notice
Other Violation 0
May 2025 Active
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting 0
Jan 2025 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Dec 2024 Active
Public Notice
Other Violation 0
Jul 2024 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Oct 2023 Active
Public Notice
Other Violation 0
Sep 2023 Active
Groundwater Rule
Treatment Technique
Health-Based Health 0
Sep 2023 Active
Groundwater Rule
Treatment Technique
Health-Based Health 0
Jul 2023 Active
Public Notice
Other Violation 0
Jul 2023 Active
Consumer Confidence Rule
Other Violation 0
Feb 2023 Active
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting 0
May 2022 Active
Public Notice
Other Violation 0
Mar 2022 Active
Public Notice
Other Violation 0
Dec 2021 Active
Public Notice
Other Violation 0
Oct 2021 Active
Public Notice
Other Violation 0
Oct 2021 Active
Public Notice
Other Violation 0
Sep 2021 Active
Public Notice
Other Violation 0
Jul 2021 Active
Consumer Confidence Rule
Other Violation 0
Showing 20 of 132 violations
Environmental Risk

Drought conditions

D3 — extreme drought

Pueblo County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.

8
Weeks at D2+ (current streak)
26.7%
Months in D2+ (last 30y)
8
Weeks at D2+ (last 5y)

Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.

Environmental Risk

Flood & disaster history

5
Declared disasters
Jul 2015
Most recent
Flood
Most common type

Pueblo County has experienced 5 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Jul 2015
SEVERE STORMS, TORNADOES, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA #4229
Sep 2013
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA #3365
Sep 2005
HURRICANE KATRINA EVACUATION
Coastal Storm FEMA #3224
Aug 1976
SEVERE STORMS & FLASH FLOODING
Flood FEMA #517
May 1973
HEAVY RAINS, SNOWMELT AND FLOODING
Flood FEMA #385

Recommended water filters

Based on contaminants detected in Colorado City's water supply, we recommend the following filter types.

🔧
For Copper
Reverse Osmosis or KDF Filter
Copper exceeds the EPA action level of 1.3 mg/L

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 3.0 15 ppb Inorganic Safe
Copper (90th percentile) 1.50 1.3 mg/L Inorganic Over Limit
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 6.0 ppb from 1993 (7.0 ppb) to 2025 (1.0 ppb).

Copper level (90th percentile)

Latest reading: 1.500 mg/L (1993)

EPA action level: 1.3 mg/L

Contaminant Rankings

See how Colorado City compares by contaminant

Explore where Colorado City ranks among all Colorado cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Surface Water
Operator
Local Government
Population Served
2,755
Water Systems
1
Water Source

Where Colorado City's water comes from

Surface Water

Colorado City's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.

These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.

The system is operated by local government ownership and serves approximately 2,755 people through 1 water system.

Infrastructure

Water systems serving Colorado City

System Name PWSID Population Source
COLORADO CITY MD CO0151200 2,755 SW
Regional Comparison

How Colorado City compares

Full Colorado rankings →

Colorado City's score of 42/100 is on par with the average of 45/100 among major Colorado cities. It outscores 5 of 10 nearby cities.

Colorado City (this city)
42
Denver
39.6
Aurora
38.1
Lakewood
36.9
Colorado avg
45
City Profile

About Colorado City, CO

Economic Profile
$55,759
Median Income
$202,168
Median Home Value
$1,215/mo
Median Rent
0%
Unemployment
Community
48
Median Age
50
People / sq mi
16.3%
College Educated
71.7%
Homeownership
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Frequently asked questions

Is Colorado City, CO tap water safe to drink?

Colorado City's water quality earned a grade of F (42/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #223 out of 246 cities tested in Colorado.

What contaminants are in Colorado City's water?

Lead was measured at 3.0 ppb (90th percentile). 132 violations are on record.

How is Colorado City's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Colorado City?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Colorado City's water come from?

Colorado City's water is sourced from Surface water. The city has 1 water system serving approximately 2,755 residents.

What health violations has Colorado City's water system had?

Colorado City has 34 health-based violations on record. The most recent violation was recorded in January 2026. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 30 violations remain unresolved.

How does Colorado City's water compare to other cities?

Colorado City ranks #223 out of 246 cities in Colorado (better than 9% of state cities) and #14891 out of 15744 cities nationally (5th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Colorado City's small water system affect quality?

Colorado City's system serves approximately 2,755 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 132 violations on record.