Is Concan, TX Tap Water Safe to Drink?
Graded C+, with 21 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
67.8/100
waterverge.com Concan, TX — Water Quality Report
Concan's drinking water received a grade of C+ (67.8 out of 100), indicating fair water quality. The city's 2 water systems serve approximately 1,715 residents using ground water under influence.
Lead levels were measured at 0.9 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 116 violations on record, including 4 health-based violations. 21 remain unresolved.
What to know about Concan's water
Concan ranks #611 out of 1067 cities in Texas for water quality, placing it below average in the state.
Concan 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, Concan may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 17 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Concan, TX water safe to drink?
Concan's drinking water has significant quality concerns based on EPA testing data. With a grade of C+ (67.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 1,715 residents using groundwater (wells).
Recent water quality updates for Concan
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Concan's water quality assessment. Grade: C+ (67.8/100).
Federal disaster declaration (FEMA DR-4879). Flood event — may have impacted local water infrastructure.
Contaminants: Chlorine.
Contaminants: Public Notice, Consumer Confidence Rule.
Contaminants: Public Notice.
Federal disaster declaration (FEMA DR-4416). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Concan's water supply.
Well within EPA limits.
Violation history
Concan's water system has 116 total violations on record, including 4 health-based violations. 21 remain unresolved. 17 violations were issued in the last 5 years.
Flood & environmental risk
Uvalde County has experienced 3 federally declared disasters since 2005. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Frio Rv At Concan, Dry Frio Rv Nr Reagan Wells, Dry Frio Rv At Fm 2690 Nr Knippa.
Where does Concan's water come from?
Concan's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 1,715 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Frio Rv At Concan (river), Dry Frio Rv Nr Reagan Wells (river), Dry Frio Rv At Fm 2690 Nr Knippa (river).
What Concan residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Concan'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.
Concan'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 droughtUvalde 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
Uvalde County has experienced 3 federally declared disasters since 2005. 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. | 0.9 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Concan compares by contaminant
Explore where Concan ranks among all Texas cities for specific contaminants.
Water source & infrastructure
Where Concan's water comes from
Concan'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 1,715 people through 2 water systems.
Water bodies near Concan
Concan is located near 3 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Concan
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CONCAN WSC | TX2320032 | 1,488 | GU |
| FRIO CIELO RANCH ASSOCIATION WATER SYSTE | TX2320051 | 227 | GW |
How Concan compares
Full Texas rankings →Concan's score of 67.8/100 is above the average of 46/100 among major Texas cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Texas rankings →About Concan, TX
Wikipedia →Concan is a small unincorporated community in Uvalde County, Texas, United States.
Learn more about your water
Guides and resources related to Concan's water quality findings.
Explore water quality across Uvalde
Frequently asked questions
Is Concan, TX tap water safe to drink?
Concan's water quality earned a grade of C+ (67.8/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #611 out of 1067 cities tested in Texas.
What contaminants are in Concan's water?
Lead was measured at 0.9 ppb (90th percentile). 116 violations are on record.
How is Concan'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 Concan?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Concan's water come from?
Concan's water is sourced from Ground water under influence. The city has 2 water systems serving approximately 1,715 residents.
What health violations has Concan's water system had?
Concan has 4 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 21 violations remain unresolved.
Is Concan's groundwater at risk of contamination?
Concan 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 116 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 Concan's water compare to other cities?
Concan ranks #611 out of 1067 cities in Texas (better than 43% of state cities) and #11183 out of 15744 cities nationally (29th percentile). The grade of C+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.