Historical Compliance Records OR

City of Prineville

EPA ID: OR4100682 ยท 11,000 people served ยท 1 ZIP code

ZipCheckup's reading of EPA records for City of Prineville (OR4100682): 76 violations on record since 2021. Within the EPA violation records on file, City of Prineville accumulated 76 violations, and every finding is recorded as resolved; the utility supplies water to approximately 11,000 people. Resolution of past violations is not a statement about current water quality.

Data: EPA SDWIS

C ยท 67
Avg Safety Score
11,000
People Served
1
ZIP Code Served
76
Violations (since 2021)
Groundwater
Water Source
0.0019 mg/L
Most recent lead 90th percentile on record (monitoring period ending 2026-12-31)
Zone 2
County Radon Potential ยท Moderate
57
Contaminants Flagged
$398K
Median Home Value in ZIP Codes Served

Service Area Map

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

Service area boundary - average Home Safety grade of mapped ZIPs: C

Demographics of ZIP Codes Served

$76,698
Median Household Income
22,469
Population of ZIP Codes Served (Census)
75%
Disadvantaged Population
70th
Poverty Percentile
50th
Energy Burden Percentile
46%
Pre-1986 Housing

The ZIP codes associated with City of Prineville have a median household income of $76,698 and about 22,469 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 46% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

Environmental Justice Note: On average, 75% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

City of Prineville's water is classified in EPA records as a groundwater source. 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.

Moderate Risk
Source Contamination Risk
0th
Wastewater Discharge Proximity
0th
Superfund Site Proximity

Infrastructure Risk

28 yr
Estimated pipe age (modeled from housing age)
Copper
Likely pipe material (modeled)
42 yr
Est. Remaining Life
Stable
Decay Status
Installed 40% of expected lifespan used (estimate) End of life

Comparable Water Systems

Similar-sized systems in Oregon

1 violation
City of Cottage Grove
10,879 people
A 7 violations
City of Silverton
10,484 people
A 15 violations
City of Newport
10,439 people
0 violations
City of Monmouth
11,651 people
6 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Water Filtration
Water Filtration $300
Total Estimated Cost $300

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

Illustrative per-household cost scenario based on stated assumptions:

Estimated Healthcare Costs $1,500

Annual per household (ZipCheckup estimate)

Estimated Cumulative Cost Per Household

5 years
$7,500
10 years
$15,000
20 years
$30,000

Compare: Estimated remediation cost is $300 (one-time) vs. $15,000 in estimated inaction costs over 10 years.

Individual costs vary by household size, property, and health factors. These estimates are for awareness, not financial advice.

System Overview

City of Prineville, (EPA ID: OR4100682) is a community water system in Oregon that serves approximately 11,000 people from groundwater sources.

This system serves ZIP code 97754 in Prineville.

ZIP-Area Home Safety Context: C (67/100)

This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

No current noncompliance in the accepted 2026Q2 snapshot. The 76 records in the 2021-2026 window are classified as resolved or archived, not current.

Status breakdown for accepted records with record years 2021-2026: 75 resolved, 1 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Date Contaminant Type Status
June 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Resolved
January 1, 2025 COLIPHAGE Non-health-based Archived
January 1, 2024 COLIPHAGE Non-health-based Resolved
January 1, 2024 COLIPHAGE Non-health-based Resolved
January 1, 2024 1,2,4-Trichlorobenzene Non-health-based Resolved
January 1, 2024 cis-1,2-Dichloroethylene Non-health-based Resolved
January 1, 2024 Xylenes, Total Non-health-based Resolved

Contaminants Detected

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

Contaminant Category Violations Health-Based
COLIPHAGE Other Violation 17 No
Lead Inorganic 2 No
Gross Alpha Radionuclides 2 No
Combined Radium Radionuclides 2 No
Endrin Other Violation 1 No
BHC-GAMMA Other Violation 1 No
Methoxychlor Other Violation 1 No
Toxaphene Other Violation 1 No
Dalapon Other Violation 1 No
Diquat Other Violation 1 No
Endothall Other Violation 1 No
Glyphosate Other Violation 1 No
Di(2-ethylhexyl) adipate Other Violation 1 No
OXAMYL Other Violation 1 No
Simazine Other Violation 1 No

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
0.0019 mg/L No 2026-12-31

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

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 OR 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 available EPA compliance records for City of Prineville (OR4100682) on EPA.gov.

Frequently Asked Questions

Is City of Prineville water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for City of Prineville; its 76 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does City of Prineville serve?

City of Prineville serves approximately 11,000 people across 1 ZIP code in Oregon.

Where does City of Prineville get its water?

The primary water source is groundwater.

Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels

This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.

Samples collected
290

EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.

Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) โ€” per-system federal sampling, 2023โ€“2025. EPA UCMR5 monitoring program โ†’

Understand PFAS health context and filtration โ†’

How Water Systems Appear in Rankings

Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.

Frequently Asked Questions

Is water from City of Prineville safe to drink? ▼
City of Prineville has 76 recorded violations since 2021. The C shown is a ZIP-area score, not a grade for this utility; see the violation table for what was violated.
Should I use a water filter? ▼
Given 76 recorded violations, review the violation types and dates; a filter certified for a specific contaminant of concern can reduce that contaminant at the tap. Monitoring or reporting violations are not something a filter addresses.
How many people does City of Prineville serve? ▼
City of Prineville serves approximately 11,000 people with drinking water across 1 ZIP code.
What is City of Prineville's water source? ▼
City of Prineville draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in City of Prineville's water? ▼
The most recent 90th-percentile lead result on record is 0.0019 mg/L (sample period ending 2026-12-31). This is at or below the EPA lead action level, which triggers system action and is not a safe level; the EPA health goal for lead is zero.
What is the demographic profile of the ZIP codes associated with City of Prineville? ▼
The ZIP codes mapped to City of Prineville have a median household income of $76,698 (Census ZIP-code estimate). In CEJST data, 75% of census tracts in the counties mapped to this area are designated disadvantaged (average across mapped ZIP codes), which may indicate greater vulnerability to environmental health risks.
Where does City of Prineville get its water? ▼
City of Prineville's water is classified in EPA records as a groundwater source. 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. Based on the available data, the modeled source-contamination category is moderate; test local water to assess actual exposure.

How to cite this page

APA ZipCheckup. (n.d.). City of Prineville (OR): 76 EPA Violations. https://zipcheckup.com/water-system/or4100682/
BibTeX
@misc{zipcheckup-water-system-or4100682,
  author = {{ZipCheckup}},
  title  = {{City of Prineville (OR): 76 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/or4100682/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

City of Prineville (EPA ID: OR4100682) - request the latest Consumer Confidence Report or ask about specific contaminants.

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