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BAY CO. DEPT OF WATER & SEWER

PWS ID: MI0000485 · BAY CITY, Michigan 48706

BAY CO. DEPT OF WATER & SEWER serves 8,465 people in BAY CITY, Michigan using Surface Water water sources. It has a clean compliance record with no EPA violations recorded. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: BAY CO. DEPT OF WATER & SEWER

BAY CO. DEPT OF WATER & SEWER is a local-owned community water system that delivers drinking water to 8,465 residents in BAY CITY, Michigan (Bay County) through 3,323 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 0 total violations for this system , giving it a clean Safe Drinking Water Act compliance record.

No specific contaminant violations have been recorded in EPA's detailed violation register for this system. This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. BAY CO. DEPT OF WATER & SEWER's 0 violations sit below the Michigan average. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%). 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
8,465
Total Violations
0
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
3,323
County
Bay
School/Daycare
No
MCL Violations
0
Monitoring Violations
0
Treatment Tech Violations
0

PFAS Testing Results (UCMR5)

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

Contaminant Date Result MRL Status
PFHpS 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 7/14/2025 <0.008 µg/L 0.008 µg/L Not Detected
6:2 FTS 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 7/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 7/14/2025 <0.007 µg/L 0.007 µg/L Not Detected
NFDHA 7/14/2025 <0.02 µg/L 0.02 µg/L Not Detected
HFPO-DA 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 7/14/2025 <9 µg/L 9 µg/L Not Detected
9Cl-PF3ONS 7/14/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/14/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 7/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/14/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFBA 7/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 7/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 4/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 4/14/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 4/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/14/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 4/14/2025 <0.008 µg/L 0.008 µg/L Not Detected
lithium 4/14/2025 <9 µg/L 9 µg/L Not Detected
PFHxS 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 4/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 4/14/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFDoA 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 4/14/2025 <0.005 µg/L 0.005 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 BAY CO. DEPT OF WATER & SEWER.

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 MI0000485 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Michigan Drinking Water Authority

Michigan EGLE — Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects BAY CO. DEPT OF WATER & SEWER under EPA-delegated authority.

Open MI regulator portal

Source: Michigan EGLE — Drinking Water and Environmental Health Division

How BAY CO. DEPT OF WATER & SEWER Compares

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

Metric BAY CO. DEPT OF WATER & SEWER Michigan avg Federal benchmark
Total violations 0 23.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 27.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 8,465 830 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.

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 CO. DEPT OF WATER & SEWER water safe to drink? ▼
BAY CO. DEPT OF WATER & SEWER (PWS ID: MI0000485) has 0 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 8,465 people using Surface Water sources.
How many people does BAY CO. DEPT OF WATER & SEWER serve? ▼
BAY CO. DEPT OF WATER & SEWER serves 8,465 people in BAY CITY, Michigan. It is a Local-owned system using Surface Water water sources with 3,323 service connections.
What type of violations does BAY CO. DEPT OF WATER & SEWER have? ▼
BAY CO. DEPT OF WATER & SEWER has 0 total violations: 0 health-based violations (MCL exceedances or treatment failures), 0 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in BAY CO. DEPT OF WATER & SEWER water? ▼
No. BAY CO. DEPT OF WATER & SEWER was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does BAY CO. DEPT OF WATER & SEWER use? ▼
BAY CO. DEPT OF WATER & SEWER 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