Is Julesburg, CO Tap Water Safe to Drink?
Graded B-, with 10 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
73.9/100
waterverge.com Julesburg, CO — Water Quality Report
Julesburg's drinking water received a grade of B- (73.9 out of 100), indicating fair water quality. The city's 1 water system serves approximately 1,225 residents using groundwater.
Lead levels were measured at 2.0 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 19 violations on record, including 4 health-based violations. 10 remain unresolved.
What to know about Julesburg's water
Julesburg ranks #106 out of 246 cities in Colorado for water quality, placing it mid-range in the state.
Julesburg relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Julesburg may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 12 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Julesburg, CO water safe to drink?
Julesburg's drinking water has significant quality concerns based on EPA testing data. With a grade of B- (73.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,225 residents using groundwater (wells).
Recent water quality updates for Julesburg
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Julesburg's water quality assessment. Grade: B- (73.9/100).
Contaminants: Public Notice.
Contaminants: Public Notice.
Contaminants: Gross Alpha, Excl. Radon and U, Nitrate.
Federal disaster declaration (FEMA DR-4229). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4145). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Julesburg's water supply.
Well within EPA limits.
Violation history
Julesburg's water system has 19 total violations on record, including 4 health-based violations. 10 remain unresolved. 12 violations were issued in the last 5 years.
Flood & environmental risk
Sedgwick County has experienced 5 federally declared disasters since 1969. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Julesburg's water come from?
Julesburg's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,225 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Julesburg residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Julesburg's water.
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.
Julesburg'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.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D3 — extreme droughtSedgwick 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.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Sedgwick County has experienced 5 federally declared disasters since 1969. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 2.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Julesburg compares by contaminant
Explore where Julesburg ranks among all Colorado cities for specific contaminants.
Water source & infrastructure
Where Julesburg's water comes from
Julesburg's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 1,225 people through 1 water system.
Water systems serving Julesburg
| System Name | PWSID | Population | Source |
|---|---|---|---|
| JULESBURG TOWN OF | CO0158001 | 1,225 | GW |
How Julesburg compares
Full Colorado rankings →Julesburg's score of 73.9/100 is above the average of 45/100 among major Colorado cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Colorado rankings →About Julesburg, CO
Learn more about your water
Guides and resources related to Julesburg's water quality findings.
Explore water quality across Sedgwick
Frequently asked questions
Is Julesburg, CO tap water safe to drink?
Julesburg's water quality earned a grade of B- (73.9/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #106 out of 246 cities tested in Colorado.
What contaminants are in Julesburg's water?
Lead was measured at 2.0 ppb (90th percentile). 19 violations are on record.
How is Julesburg'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 Julesburg?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Julesburg's water come from?
Julesburg's water is sourced from Groundwater. The city has 1 water system serving approximately 1,225 residents.
What health violations has Julesburg's water system had?
Julesburg has 4 health-based violations on record. The most recent violation was recorded in March 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 10 violations remain unresolved.
Is Julesburg's groundwater at risk of contamination?
Julesburg uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 19 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Julesburg's water compare to other cities?
Julesburg ranks #106 out of 246 cities in Colorado (better than 57% of state cities) and #9991 out of 15744 cities nationally (37th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Julesburg's small water system affect quality?
Julesburg's system serves approximately 1,225 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 19 violations on record.