Twin Water Authority
EPA ID: AL0000929 · 804 people served · 1 ZIP code
In every reporting cycle over the past five years, Twin Water Authority has come through without a single EPA violation — a consistent performance across the full service population of approximately 804 residents that reflects both well-maintained infrastructure and reliable operational oversight.
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 1 (2022) to 3 (2023). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Twin Water Authority Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Twin Water Authority serves a community with a median household income of $50,313 and an estimated 3,701 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 88% 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?
Twin Water Authority's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 2% of homes in Marion County, Alabama rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Alabama
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
Twin Water Authority (EPA ID: AL0000929) is a community water system in Alabama that serves approximately 804 people from surface water sources.
This system serves ZIP code 35563 in Guin.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
- 35563 — Guin
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Twin Water Authority (AL0000929) on EPA.gov.
Frequently Asked Questions
Is Twin Water Authority water safe to drink?
Based on EPA records, Twin Water Authority has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Twin Water Authority serve?
Twin Water Authority serves approximately 804 people across 1 ZIP code in Alabama.
Where does Twin Water Authority get its water?
The primary water source is surface water.
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.