Monitoring Violations OR

City of Ukiah

Name: Water Quality Data for City of Ukiah
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

EPA ID: OR4100913 · 235 people served · 1 ZIP code

The five-year EPA compliance file for City of Ukiah contains 1 violation, each documented and subsequently closed — the utility now operates in full compliance and continues to supply approximately 235 residents with water meeting current federal standards, including both health-based and monitoring requirements.

Data: EPA SDWIS Last verified: 2026-04-02

B · 83

Avg Safety Score

235

People Served

ZIP Code Served

Violations (5yr)

Groundwater

Water Source

0.004 mg/L

Max Lead Level

Zone 2

Radon Risk · Moderate

Contaminants Flagged

Service Area Map

Coverage area for City of Ukiah Source: EPA SDWIS service area boundaries.

Service area boundary — Grade B

💧 Where Does Your Water Come From?

Groundwater

City of Ukiah'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.

Low Risk

Source Contamination Risk

10th

Wastewater Discharge Proximity

40th

Superfund Site Proximity

About 1% of homes in Umatilla County, Oregon rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.

Infrastructure Risk

55 yr

Avg Pipe Age

Copper

Pipe Material

15 yr

Est. Remaining Life

Stable

Decay Status

Installed 79% of expected lifespan used End of life

Detected Contaminants

How City of Ukiah compares to EPA limits

What This Means For You

Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.

Comparable Water Systems

Similar-sized systems in Oregon

Hidden Valley Mbl Ests Imp Dis

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0 violations

Riverbend-riverbank Community

225 people

0 violations

Bandon Coastal Dunes

225 people

0 violations

City of Paisley

245 people

C 4 violations

Knoll Terrace Subdivision

221 people

0 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Radon Mitigation

Radon Mitigation $400

Total Estimated Cost $400

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.

Cost of Inaction

If water quality issues in this service area are not addressed, the estimated financial impact per household is:

Estimated Healthcare Costs $500

Annual per household (CDC est.)

Estimated Cumulative Cost Per Household

5 years

$2,500

10 years

$5,000

20 years

$10,000

Compare: Estimated remediation cost is $400 (one-time) vs. $5,000 in estimated inaction costs over 10 years.

Estimates based on published EPA, CDC, and peer-reviewed research. Individual costs vary by household size, property, and health factors. These are conservative lower-bound estimates intended for awareness, not financial advice.

System Overview

City of Ukiah, (EPA ID: OR4100913) is a community water system in Oregon that serves approximately 235 people from groundwater sources.

This system serves ZIP code 97880 in Ukiah.

Average Home Safety Score: B (83/100)

Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.

Violation History

1 monitoring/reporting violation recorded. These are procedural violations (missed tests or late reports), not necessarily water safety issues.

Recent Violations

Date	Contaminant	Type	Status
July 1, 2023	Surface Water Treatment Rule	Monitoring	Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant	Category	Violations	Health-Based
Surface Water Treatment Rule	Treatment Failure	1	No

Lead & Copper

EPA Lead and Copper Rule sampling data for ZIP codes served by this system:

ZIP Code	Lead Level	Exceeds Limit	Sample Date
97880	0.004 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 Filter

Free tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.

ZIP Codes Served

97880 — Ukiah

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Ukiah (OR4100913) on EPA.gov.

Frequently Asked Questions

Is City of Ukiah water safe to drink?

City of Ukiah has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.

How many people does City of Ukiah serve?

City of Ukiah serves approximately 235 people across 1 ZIP code in Oregon.

Where does City of Ukiah 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:

Confirmed Lead

Galvanized — Replacement Required

Unknown Material

168

Confirmed Non-Lead

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.

Federal Regulatory Status · 2026Q1

LCRR inventory submission: Reported all required service line types

Latest tap sample on 2023-01-01 did not exceed the federal lead action level.

Population served: 235

Reported to Oregon

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.

Learn about lead in drinking water →

Frequently Asked Questions

Is water from City of Ukiah safe to drink? ▼

City of Ukiah earns a B safety grade with 1 violation in the past 5 years. Tap water meets EPA standards for most contaminants.

What contaminants are in City of Ukiah's water? ▼

Detected contaminants include Surface Water Treatment Rule. Each is compared against EPA maximum contaminant levels (MCLs) in the detailed breakdown above.

Should I use a water filter? ▼

Given 1 contaminant above EPA limits, a certified water filter can provide an extra layer of protection. The best type depends on specific contaminants in your water.

How many people does City of Ukiah serve? ▼

City of Ukiah serves approximately 235 people with drinking water across 1 ZIP code.

What is City of Ukiah's water source? ▼

City of Ukiah draws water from groundwater sources. Source type affects which contaminants are most likely to be present.

Is there lead in City of Ukiah's water? ▼

The maximum detected lead level is 0.004 mg/L. This is within EPA action level guidelines.

Where does City of Ukiah get its water? ▼

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 Ukiah (EPA ID: OR4100913) — request the latest Consumer Confidence Report or ask about specific contaminants.

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