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SEYMOUR WATERWORKS

PWS ID: WI4450337 · SEYMOUR, Wisconsin 54165

SEYMOUR WATERWORKS serves 3,601 people in SEYMOUR, Wisconsin using Groundwater water sources. It has 87 recorded EPA violations, including 15 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SEYMOUR WATERWORKS

SEYMOUR WATERWORKS is a local-owned community water system that delivers drinking water to 3,601 residents in SEYMOUR, Wisconsin (Outagamie County) through 1,366 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 87 total violations for this system , of which 15 (17%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 71 monitoring and reporting violations are on file. The most recent violation on record dates to 2012.

The most frequently cited contaminant at this system is Combined Radium (-226 and -228), recorded in 12 violations (MCL, 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 Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. SEYMOUR WATERWORKS's 87 violations sit above the Wisconsin average. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%). 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
3,601
Total Violations
87
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,366
County
Outagamie
School/Daycare
No
MCL Violations
15
Monitoring Violations
71
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 12 2009
Nitrate MR 6 1994
Coliform (TCR) MCL 3 1993
Xylenes, Total MR 3 1994
DICHLOROMETHANE MR 3 1994
o-Dichlorobenzene MR 3 1994
Vinyl chloride MR 3 1994
trans-1,2-Dichloroethylene MR 3 1994
1,2-Dichloroethane MR 3 1994
1,1,1-Trichloroethane MR 3 1994
Trichloroethylene MR 3 1994
Tetrachloroethylene MR 3 1994
Benzene MR 3 1994
Toluene MR 3 1994
Ethylbenzene MR 3 1994
Styrene MR 3 1994
1,2,4-Trichlorobenzene MR 3 1994
cis-1,2-Dichloroethylene MR 3 1994
CHLOROBENZENE MR 3 1994
1,1,2-Trichloroethane MR 3 1994
1,1-Dichloroethylene MR 3 1994
1,2-Dichloropropane MR 3 1994
p-Dichlorobenzene MR 3 1994
Carbon tetrachloride MR 3 1994
Lead and Copper Rule MR 2 2012

PFAS Testing Results (UCMR5)

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

Contaminant Date Result MRL Status
PFMPA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/19/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/19/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFBS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/19/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFOS 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/19/2024 <9 µg/L 9 µg/L Not Detected
PFDoA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
NMeFOSAA 8/19/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/19/2024 <9 µg/L 9 µg/L Not Detected
PFBA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/19/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/19/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/19/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/19/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/19/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/19/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/19/2024 <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 SEYMOUR WATERWORKS.

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 WI4450337 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR — Drinking Water and Groundwater is the primacy agency that licenses and inspects SEYMOUR WATERWORKS under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR — Drinking Water and Groundwater

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
2012 Lead and Copper Rule MR 2 SDWIS / WI4450337 / 5000
2009 Combined Radium (-226 and -228) MCL 12 SDWIS / WI4450337 / 4010
1994 Nitrate MR 6 SDWIS / WI4450337 / 1040
1994 Xylenes, Total MR 3 SDWIS / WI4450337 / 2955
1994 DICHLOROMETHANE MR 3 SDWIS / WI4450337 / 2964
1994 o-Dichlorobenzene MR 3 SDWIS / WI4450337 / 2968
1994 Vinyl chloride MR 3 SDWIS / WI4450337 / 2976
1994 trans-1,2-Dichloroethylene MR 3 SDWIS / WI4450337 / 2979
1994 1,2-Dichloroethane MR 3 SDWIS / WI4450337 / 2980
1994 1,1,1-Trichloroethane MR 3 SDWIS / WI4450337 / 2981
1994 Trichloroethylene MR 3 SDWIS / WI4450337 / 2984
1994 Tetrachloroethylene MR 3 SDWIS / WI4450337 / 2987
1994 Benzene MR 3 SDWIS / WI4450337 / 2990
1994 Toluene MR 3 SDWIS / WI4450337 / 2991
1994 Ethylbenzene MR 3 SDWIS / WI4450337 / 2992

How SEYMOUR WATERWORKS Compares

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

Metric SEYMOUR WATERWORKS Wisconsin avg Federal benchmark
Total violations 87 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 15 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,601 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

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 SEYMOUR WATERWORKS water safe to drink? ▼
SEYMOUR WATERWORKS (PWS ID: WI4450337) has 87 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,601 people using Groundwater sources.
How many people does SEYMOUR WATERWORKS serve? ▼
SEYMOUR WATERWORKS serves 3,601 people in SEYMOUR, Wisconsin. It is a Local-owned system using Groundwater water sources with 1,366 service connections.
What type of violations does SEYMOUR WATERWORKS have? ▼
SEYMOUR WATERWORKS has 87 total violations: 15 health-based violations (MCL exceedances or treatment failures), 71 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SEYMOUR WATERWORKS water? ▼
No. SEYMOUR WATERWORKS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does SEYMOUR WATERWORKS use? ▼
SEYMOUR WATERWORKS 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. 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