City of Sundown
EPA ID: TX1100003 · 1,300 people served · 3 ZIP codes
While corrective steps may be in progress, City of Sundown currently shows 24 EPA violations unresolved — serving a population of approximately 1,300.
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 2 (2022) to 11 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Sundown Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Sundown serves a community with a median household income of $70,000 and an estimated 18,195 residents across its service area. Approximately 62% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 43% 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 Sundown'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 2% of homes in Hockley County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How City of Sundown compares to EPA limits
What This Means For You
Lead and Copper Rule at 5 mg/L exceeds the EPA maximum of mg/L.
Nickel at 19 mg/L (secondary standard: 2.0 mg/L) exceeds the EPA maximum of 4 mg/L (secondary standard: 2.0 mg/L). Tooth & bone damage at high levels. Consider reverse osmosis filtration.
Total Coliform at 2 presence exceeds the EPA maximum of presence.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS).
Nickel was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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 Sundown (EPA ID: TX1100003) is a community water system in Texas that serves approximately 1,300 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Average Home Safety Score: C (61/100)
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 |
|---|---|---|---|
| July 1, 2025 | Nickel | Health-based | Unresolved |
| July 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| May 20, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| May 1, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 1, 2025 | Nickel | Health-based | Unresolved |
| January 1, 2025 | Nickel | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 1, 2024 | Stage 1 DBP Rule | Monitoring | Unresolved |
| October 1, 2024 | Nickel | Health-based | Unresolved |
| July 1, 2024 | Nickel | Health-based | Unresolved |
| April 1, 2024 | Nickel | Health-based | Unresolved |
| January 1, 2024 | Nickel | Health-based | Unresolved |
| October 31, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| October 20, 2023 | Total Coliform | Monitoring | Resolved |
| October 1, 2023 | Nickel | Health-based | Unresolved |
| September 21, 2023 | Total Coliform | Monitoring | Resolved |
| September 5, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| July 1, 2023 | Nickel | Health-based | Unresolved |
| April 1, 2023 | Nickel | Health-based | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Nickel | Inorganic | 19 | Yes |
| Lead and Copper Rule | Treatment Failure | 5 | No |
| Total Coliform | Microbiological | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
Health Risk Details
Fluoride (EPA limit: 4 mg/L (secondary standard: 2.0 mg/L))
Tooth & bone damage at high levels At-risk groups: children under 8 during tooth development, elderly with compromised bone density, people with kidney disease.
Removal methods: reverse osmosis, activated alumina, distillation. 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 |
|---|---|---|---|
| 79358 | 0.00142 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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 Sundown (TX1100003) on EPA.gov.
Frequently Asked Questions
Is City of Sundown water safe to drink?
City of Sundown 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 Sundown serve?
City of Sundown serves approximately 1,300 people across 3 ZIP codes in Texas.
Where does City of Sundown 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:
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 Sundown (EPA ID: TX1100003) — request the latest Consumer Confidence Report or ask about specific contaminants.