Data: EPA ECHO, Census ACS, NTSB Last verified: 2026-07-18

What is infrastructure decay probability?

Infrastructure decay probability estimates the likelihood of water pipe deterioration based on pipe age, material type, violation history, and environmental conditions. Higher probability means greater risk of water main breaks, pressure drops, and contamination from aging pipes. The national average hovers around 30-40%. Douglas Flat's average is 15%.

Infrastructure Risk Distribution

Douglas Flat is covered by a single ZIP code. Its infrastructure risk level:

Low 1 ZIP

Moderate 0 ZIPs

High 0 ZIPs

Very High 0 ZIPs

Infrastructure Risk Overview

Douglas Flat, California has low infrastructure risk with an average decay probability of 15%. The city's 1 water system is in relatively good condition based on system age, violation history, and housing vintage.

Infrastructure decay probability measures the likelihood of pipe failure, water main breaks, and system degradation based on pipe age, material, violation history, and environmental factors.

Key Infrastructure Metrics

Metric	Value
Decay probability	15%
Risk level	low
Water systems	1
Pre-1986 housing	0%
CO/gas incidents	0
ZIP codes	1
Population	4,774

Infrastructure Risk Distribution

How Douglas Flat's 1 ZIP code is distributed by infrastructure risk level:

Water System Age and Pipe Materials

Pipe material risks by era:

Carbon Monoxide & Gas Safety

No CO/gas incidents have been recorded in the county covering Douglas Flat. The average CO risk score is 0 out of 100.

Carbon monoxide is odorless and colorless - it is the leading cause of poisoning deaths in the U.S. Risk factors include:

• Gas furnaces, water heaters, and stoves
• Attached garages
• Blocked chimneys or vents
• Portable generators used indoors

Prevention:

• Install CO detectors on every level, especially near bedrooms
• Have gas appliances inspected annually
• Never run generators, grills, or cars in enclosed spaces
• Replace CO detectors every 5-7 years

What Homeowners Can Do

Pipe Inspection

• Hire a licensed plumber to inspect your service line and interior plumbing
• Check for discolored water (brown/orange = rust; white/cloudy = air or sediment)
• Test water pressure - low pressure may indicate buildup in aging pipes
• Look for visible corrosion on exposed pipes in basement or utility areas

Water Heater Maintenance

• Flush your water heater annually to remove sediment
• Check the anode rod every 2-3 years (prevents tank corrosion)
• Set temperature to 120F to prevent scalding and reduce energy use
• Replace water heaters older than 10-15 years proactively

CO Detector Placement

• One detector per floor, minimum
• Within 10 feet of each bedroom door
• Near attached garage and utility room
• 5 feet above the floor (CO rises with warm air) or on the ceiling
• Not near windows, doors, or HVAC vents (air movement causes false readings)

Douglas Flat vs. Nearby California Cities

How Douglas Flat's infrastructure compares to nearby cities:

ZIP Codes in Douglas Flat

Douglas Flat covers 1 ZIP code served by 1 water system. Infrastructure condition varies by ZIP code based on housing age, pipe material, and water system maintenance. Check your specific ZIP code for localized data.

Data Sources

• Water systems: EPA ECHO - Enforcement and Compliance History Online
• Infrastructure risk: Derived model (housing age, violation history, system assessments)
• Housing age: U.S. Census Bureau American Community Survey (ACS)
• CO/gas incidents: NTSB, PHMSA pipeline incident reports

Updated daily.

Infrastructure Risk by ZIP Code in Douglas Flat

Douglas Flat is covered by a single ZIP code, so one infrastructure profile applies citywide. Risk within it still depends on system age, pipe materials, and violation history.

ZIP Code	Grade	Score	Violations
95229	D	53/100	0	View report →