City of Chico
EPA ID: TX2490004 · 1,596 people served · 3 ZIP codes
Looking at the EPA enforcement file for City of Chico, 33 violations are listed as unresolved — those findings cover the utility's service area of approximately 1,596 people and remain open in the federal compliance system, awaiting formal corrective action documentation.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 3 (2024) to 12 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Chico Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Chico serves a community with a median household income of $77,552 and an estimated 10,043 residents across its service area.
Environmental Justice Note: 35% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
City of Chico's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Wise County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How City of Chico compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 26 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 9 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 32 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 18 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 9 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
City of Chico (EPA ID: TX2490004) is a community water system in Texas that serves approximately 1,596 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Average Home Safety Score: C (57/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 29, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| September 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| July 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| May 1, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 29, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| April 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| December 1, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| November 29, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| November 1, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| October 23, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| September 27, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| September 12, 2024 | Total Coliform | Monitoring | Unresolved |
| August 24, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| August 18, 2024 | Lead and Copper Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead and Copper Rule | Treatment Failure | 32 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 26 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 18 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 9 | Yes |
| Revised Total Coliform Rule | Microbiological | 9 | No |
| Stage 1 DBP Rule | Treatment Failure | 7 | No |
| Surface Water Treatment Rule | Treatment Failure | 4 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Total Coliform | Microbiological | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 76431 | 0.0103 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TX or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Chico (TX2490004) on EPA.gov.
Frequently Asked Questions
Is City of Chico water safe to drink?
City of Chico has recorded 20 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does City of Chico serve?
City of Chico serves approximately 1,596 people across 3 ZIP codes in Texas.
Where does City of Chico get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
City of Chico (EPA ID: TX2490004) — request the latest Consumer Confidence Report or ask about specific contaminants.