SILVERTON, CITY OF

Q: Is SILVERTON, CITY OF water safe to drink?

SILVERTON, CITY OF (PWS ID: OR4100823) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 10,484 people using Surface Water sources.

Q: What type of violations does SILVERTON, CITY OF have?

SILVERTON, CITY OF has 118 total violations: 15 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in SILVERTON, CITY OF water?

No. SILVERTON, CITY OF was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.

Q: What water source does SILVERTON, CITY OF use?

SILVERTON, CITY OF uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: Where does this data come from?

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: OR4100823 · SILVERTON, Oregon 97381

SILVERTON, CITY OF serves 10,484 people in SILVERTON, Oregon using Surface Water water sources. It has 118 recorded EPA violations, including 15 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SILVERTON, CITY OF

SILVERTON, CITY OF is a local-owned community water system that delivers drinking water to 10,484 residents in SILVERTON, Oregon (Marion County) through 3,775 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 118 total violations for this system , of which 15 (13%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 97 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 11 violations (TT, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Oregon, EPA tracks 2,518 public water systems serving 4,005,242 people, with 206,659 cumulative violations and 20,339 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 82.1 violations. SILVERTON, CITY OF's 118 violations sit above the Oregon average. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served

10,484

Total Violations

118

Health-Based Violations

Water Source

Surface Water

System Details

System Type: Community
Owner Type: Local
Connections: 3,775
County: Marion
School/Daycare: No
MCL Violations: 1
Monitoring Violations: 97
Treatment Tech Violations: 14

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Surface Water Treatment Rule	TT	11	2002
Surface Water Treatment Rule	MR	10	2012
TTHM	MR	10	2022
Total Haloacetic Acids (HAA5)	MR	10	2022
CYANIDE	MR	4	2011
Nickel	MR	4	2011
Interim Enhanced Surface Water Treatment Rule	MR	4	2012
Antimony, Total	MR	4	2011
Beryllium, Total	MR	4	2011
Thallium, Total	MR	4	2011
Interim Enhanced Surface Water Treatment Rule	TT	3	2024
Nitrate	MR	2	2003
Revised Total Coliform Rule	MON	2	2025
Arsenic	MR	1	2004
BHC-GAMMA	MR	1	2002
Methoxychlor	MR	1	2002
Toxaphene	MR	1	2002
Dalapon	MR	1	2002
Endothall	MR	1	2002
Di(2-ethylhexyl) adipate	MR	1	2002
OXAMYL	MR	1	2002
Di(2-ethylhexyl) phthalate	MR	1	2002
Picloram	MR	1	2002
Atrazine	MR	1	2002
LASSO	MR	1	2002
Heptachlor epoxide	MR	1	2002
2,4,5-TP	MR	1	2002
Pentachlorophenol	MR	1	2002
ETHYLENE DIBROMIDE	MR	1	2002
Nitrite	MR	1	2011

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFDoA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/12/2023	<9 µg/L	9 µg/L	Not Detected
PFMBA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/12/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFDA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NMeFOSAA	9/12/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFTrDA	9/12/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/12/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFPeS	9/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFPeA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	9/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NEtFOSAA	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFEESA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
8:2 FTS	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
HFPO-DA	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
ADONA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
11Cl-PF3OUdS	9/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFNA	9/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NFDHA	9/12/2023	<0.02 µg/L	0.02 µg/L	Not Detected
9Cl-PF3ONS	9/12/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFDoA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
NMeFOSAA	8/15/2024	<0.006 µg/L	0.006 µg/L	Not Detected
PFBS	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	8/15/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	8/15/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	8/15/2024	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	8/15/2024	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	8/15/2024	<0.002 µg/L	0.002 µg/L	Not Detected
ADONA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected
HFPO-DA	8/15/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFTA	8/15/2024	<0.008 µg/L	0.008 µg/L	Not Detected
PFOA	8/15/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFTrDA	8/15/2024	<0.007 µg/L	0.007 µg/L	Not Detected
PFBA	8/15/2024	<0.005 µg/L	0.005 µg/L	Not Detected
lithium	8/15/2024	<9 µg/L	9 µg/L	Not Detected
PFMBA	8/15/2024	<0.003 µg/L	0.003 µg/L	Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for SILVERTON, CITY OF.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OR4100823 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oregon Drinking Water Authority

Oregon's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OR regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest)	Contaminant	Category	Count	EPA Record
2025	Revised Total Coliform Rule	MON	2	SDWIS / OR4100823 / 8000
2024	Interim Enhanced Surface Water Treatment Rule	TT	3	SDWIS / OR4100823 / 0300
2023	Consumer Confidence Rule	Other	1	SDWIS / OR4100823 / 7000
2022	TTHM	MR	10	SDWIS / OR4100823 / 2950
2022	Total Haloacetic Acids (HAA5)	MR	10	SDWIS / OR4100823 / 2456
2012	Surface Water Treatment Rule	MR	10	SDWIS / OR4100823 / 0200
2012	Interim Enhanced Surface Water Treatment Rule	MR	4	SDWIS / OR4100823 / 0300
2011	CYANIDE	MR	4	SDWIS / OR4100823 / 1024
2011	Nickel	MR	4	SDWIS / OR4100823 / 1036
2011	Antimony, Total	MR	4	SDWIS / OR4100823 / 1074
2011	Beryllium, Total	MR	4	SDWIS / OR4100823 / 1075
2011	Thallium, Total	MR	4	SDWIS / OR4100823 / 1085
2011	Nitrite	MR	1	SDWIS / OR4100823 / 1041
2011	Barium	MR	1	SDWIS / OR4100823 / 1010
2011	Chromium	MR	1	SDWIS / OR4100823 / 1020

How SILVERTON, CITY OF Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric	SILVERTON, CITY OF	Oregon avg	Federal benchmark
Total violations	118	82.1	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	15	8.1	Indicates a contaminant exceeded a federal MCL
PFAS detection	None	24%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	10,484	1,591	Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,518 regulated public water systems in Oregon.

Federal MCL reference — Safe Drinking Water Act thresholds ▼

Contaminant	Federal MCL / Action Level	Note
Lead	0 mg/L (Action Level: 0.015 mg/L)	Lead and Copper Rule treatment technique
Arsenic	0.010 mg/L (10 ppb)	Health-based MCL since 2006
Total Coliform	Treatment technique (RTCR)	Indicator organism, monitoring trigger
PFOA / PFOS (PFAS)	4.0 ppt each (final 2024 rule)	Compliance deadline 2029
Nitrate (as N)	10 mg/L	Acute health risk for infants

Frequently Asked Questions

Is SILVERTON, CITY OF water safe to drink? ▼

SILVERTON, CITY OF (PWS ID: OR4100823) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 10,484 people using Surface Water sources.

How many people does SILVERTON, CITY OF serve? ▼

SILVERTON, CITY OF serves 10,484 people in SILVERTON, Oregon. It is a Local-owned system using Surface Water water sources with 3,775 service connections.

What type of violations does SILVERTON, CITY OF have? ▼

SILVERTON, CITY OF has 118 total violations: 15 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in SILVERTON, CITY OF water? ▼

No. SILVERTON, CITY OF was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.

What water source does SILVERTON, CITY OF use? ▼

SILVERTON, CITY OF uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Where does this data come from? ▼

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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