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BAY CITY WATER SYSTEM

PWS ID: OR4100079 · BAY CITY, Oregon 97107

BAY CITY WATER SYSTEM serves 1,400 people in BAY CITY, Oregon using Groundwater water sources. It has 94 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: BAY CITY WATER SYSTEM

BAY CITY WATER SYSTEM is a local-owned community water system that delivers drinking water to 1,400 residents in BAY CITY, Oregon (Tillamook County) through 843 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 94 total violations for this system , of which 9 (10%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 80 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 Groundwater Rule, recorded in 9 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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. BAY CITY WATER SYSTEM's 94 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
1,400
Total Violations
94
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
843
County
Tillamook
School/Daycare
No
MCL Violations
4
Monitoring Violations
80
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule MR 9 2025
Lead and Copper Rule TT 5 2000
Coliform (TCR) MR 5 2009
Lead and Copper Rule MR 5 2025
Nitrate MR 4 2009
Coliform (TCR) MCL 4 2011
Consumer Confidence Rule Other 3 2023
Combined Radium (-226 and -228) MR 3 2025
1,2,4-Trichlorobenzene MR 2 2008
cis-1,2-Dichloroethylene MR 2 2008
o-Dichlorobenzene MR 2 2008
p-Dichlorobenzene MR 2 2008
Vinyl chloride MR 2 2008
1,2-Dichloroethane MR 2 2008
Carbon tetrachloride MR 2 2008
1,2-Dichloropropane MR 2 2008
Tetrachloroethylene MR 2 2008
CHLOROBENZENE MR 2 2008
Benzene MR 2 2008
Ethylbenzene MR 2 2008
Gross Alpha, Excl. Radon and U MR 2 2025
Trichloroethylene MR 2 2008
Toluene MR 2 2008
1,1-Dichloroethylene MR 2 2008
1,1,1-Trichloroethane MR 2 2008
trans-1,2-Dichloroethylene MR 2 2008
1,1,2-Trichloroethane MR 2 2008
Styrene MR 2 2008
Xylenes, Total MR 2 2008
DICHLOROMETHANE MR 2 2008

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 BAY CITY WATER SYSTEM.

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 OR4100079 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 Groundwater Rule MR 9 SDWIS / OR4100079 / 0700
2025 Lead and Copper Rule MR 5 SDWIS / OR4100079 / 5000
2025 Combined Radium (-226 and -228) MR 3 SDWIS / OR4100079 / 4010
2025 Gross Alpha, Excl. Radon and U MR 2 SDWIS / OR4100079 / 4000
2025 Combined Uranium MR 1 SDWIS / OR4100079 / 4006
2023 Consumer Confidence Rule Other 3 SDWIS / OR4100079 / 7000
2014 Total Haloacetic Acids (HAA5) MR 1 SDWIS / OR4100079 / 2456
2014 TTHM MR 1 SDWIS / OR4100079 / 2950
2011 Coliform (TCR) MCL 4 SDWIS / OR4100079 / 3100
2009 Coliform (TCR) MR 5 SDWIS / OR4100079 / 3100
2009 Nitrate MR 4 SDWIS / OR4100079 / 1040
2008 1,2,4-Trichlorobenzene MR 2 SDWIS / OR4100079 / 2378
2008 cis-1,2-Dichloroethylene MR 2 SDWIS / OR4100079 / 2380
2008 o-Dichlorobenzene MR 2 SDWIS / OR4100079 / 2968
2008 p-Dichlorobenzene MR 2 SDWIS / OR4100079 / 2969

How BAY CITY WATER SYSTEM Compares

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

Metric BAY CITY WATER SYSTEM Oregon avg Federal benchmark
Total violations 94 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 1,400 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 BAY CITY WATER SYSTEM water safe to drink? ▼
BAY CITY WATER SYSTEM (PWS ID: OR4100079) has 94 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,400 people using Groundwater sources.
How many people does BAY CITY WATER SYSTEM serve? ▼
BAY CITY WATER SYSTEM serves 1,400 people in BAY CITY, Oregon. It is a Local-owned system using Groundwater water sources with 843 service connections.
What type of violations does BAY CITY WATER SYSTEM have? ▼
BAY CITY WATER SYSTEM has 94 total violations: 9 health-based violations (MCL exceedances or treatment failures), 80 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in BAY CITY WATER SYSTEM water? ▼
No PFAS testing data is available for BAY CITY WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does BAY CITY WATER SYSTEM use? ▼
BAY CITY WATER SYSTEM uses Groundwater 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. This data is provided for informational purposes only.

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

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