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SHERIDAN, CITY OF

PWS ID: OR4100811 · SHERIDAN, Oregon 97378

SHERIDAN, CITY OF serves 6,494 people in SHERIDAN, Oregon using Surface Water water sources. It has 103 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SHERIDAN, CITY OF

SHERIDAN, CITY OF is a local-owned community water system that delivers drinking water to 6,494 residents in SHERIDAN, Oregon (Yamhill County) through 1,642 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 103 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 98 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 Coliform (TCR), recorded in 29 violations (MR). 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. SHERIDAN, CITY OF's 103 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
6,494
Total Violations
103
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,642
County
Yamhill
School/Daycare
No
MCL Violations
0
Monitoring Violations
98
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 29 2011
Surface Water Treatment Rule MR 23 2024
Interim Enhanced Surface Water Treatment Rule MR 12 2024
Revised Total Coliform Rule MON 4 2022
Lead and Copper Rule MR 3 2025
Asbestos MR 2 2002
cis-1,2-Dichloroethylene MR 1 2008
Xylenes, Total MR 1 2008
DICHLOROMETHANE MR 1 2008
o-Dichlorobenzene MR 1 2008
p-Dichlorobenzene MR 1 2008
1,1-Dichloroethylene MR 1 2008
trans-1,2-Dichloroethylene MR 1 2008
1,2-Dichloroethane MR 1 2008
1,2-Dichloropropane MR 1 2008
1,1,2-Trichloroethane MR 1 2008
Tetrachloroethylene MR 1 2008
CHLOROBENZENE MR 1 2008
Benzene MR 1 2008
Ethylbenzene MR 1 2008
Styrene MR 1 2008
Public Notice Other 1 2025
Combined Radium (-226 and -228) MR 1 1976
Vinyl chloride MR 1 2008
1,1,1-Trichloroethane MR 1 2008
CYANIDE MR 1 2011
Gross Alpha, Excl. Radon and U MR 1 1976
Carbon tetrachloride MR 1 2008
COLIPHAGE MR 1 2023
1,2,4-Trichlorobenzene MR 1 2008

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 9/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 9/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 9/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 9/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 9/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 9/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
8:2 FTS 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 9/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 9/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 8/27/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFUnA 8/27/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/27/2024 <0.008 µg/L 0.008 µg/L Not Detected
lithium 8/27/2024 <9 µg/L 9 µg/L Not Detected
PFBS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/27/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMBA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/27/2024 <0.002 µg/L 0.002 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 SHERIDAN, 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 OR4100811 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 Lead and Copper Rule MR 3 SDWIS / OR4100811 / 5000
2025 Public Notice Other 1 SDWIS / OR4100811 / 7500
2024 Surface Water Treatment Rule MR 23 SDWIS / OR4100811 / 0200
2024 Interim Enhanced Surface Water Treatment Rule MR 12 SDWIS / OR4100811 / 0300
2023 COLIPHAGE MR 1 SDWIS / OR4100811 / 3028
2023 Consumer Confidence Rule Other 1 SDWIS / OR4100811 / 7000
2022 Revised Total Coliform Rule MON 4 SDWIS / OR4100811 / 8000
2011 Coliform (TCR) MR 29 SDWIS / OR4100811 / 3100
2011 CYANIDE MR 1 SDWIS / OR4100811 / 1024
2008 cis-1,2-Dichloroethylene MR 1 SDWIS / OR4100811 / 2380
2008 Xylenes, Total MR 1 SDWIS / OR4100811 / 2955
2008 DICHLOROMETHANE MR 1 SDWIS / OR4100811 / 2964
2008 o-Dichlorobenzene MR 1 SDWIS / OR4100811 / 2968
2008 p-Dichlorobenzene MR 1 SDWIS / OR4100811 / 2969
2008 1,1-Dichloroethylene MR 1 SDWIS / OR4100811 / 2977

How SHERIDAN, CITY OF Compares

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

Metric SHERIDAN, CITY OF Oregon avg Federal benchmark
Total violations 103 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 6,494 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 SHERIDAN, CITY OF water safe to drink? ▼
SHERIDAN, CITY OF (PWS ID: OR4100811) has 103 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 6,494 people using Surface Water sources.
How many people does SHERIDAN, CITY OF serve? ▼
SHERIDAN, CITY OF serves 6,494 people in SHERIDAN, Oregon. It is a Local-owned system using Surface Water water sources with 1,642 service connections.
What type of violations does SHERIDAN, CITY OF have? ▼
SHERIDAN, CITY OF has 103 total violations: 0 health-based violations (MCL exceedances or treatment failures), 98 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SHERIDAN, CITY OF water? ▼
No. SHERIDAN, CITY OF was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does SHERIDAN, CITY OF use? ▼
SHERIDAN, 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.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial