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Community Water System · PWS WI4050468

Howard Waterworks

Green Bay, Wisconsin 54313 - drinking water served from surface water sources to 21,133 people, tracked in EPA SDWIS and UCMR5.

21,133
People served
86
EPA violations
62
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 86 drinking-water violations at Howard Waterworks, 72% of them health-based - above the Wisconsin per-system average.

86
Total EPA violations on record
72%
Health-based (MCL / treatment failure)
21,133
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Howard Waterworks

Howard Waterworks is a local-owned community water system that delivers drinking water to 21,133 residents in Green Bay, Wisconsin (Brown County) through 7,827 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 86 total violations for this system , of which 62 (72%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 12 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Gross Alpha, Excl. Radon and U, recorded in 27 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. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Howard Waterworks's 86 violations sit above the Wisconsin average.

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
21,133
Total Violations
86
Health-Based Violations
62
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
7,827
County
Brown
School/Daycare
No
MCL Violations
56
Monitoring Violations
12
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MCL 27 2001
Combined Radium (-226 and -228) MCL 26 2001
Consumer Confidence Rule Other 6 2011
Public Notice Other 4 2024
Groundwater Rule TT 4 2023
Revised Total Coliform Rule MON 4 2019
Arsenic MCL 3 2005
LEAD AND COPPER RULE REVISIONS TT 2 2024
Lead and Copper Rule MR 2 1992
Radium-226 MR 2 1994
Gross Alpha, Excl. Radon and U MR 2 1994
Radium-228 MR 2 1994

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
PFOS 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 4/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/12/2023 <7.00 ppt 7.00 ppt Not Detected
PFOA 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/12/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/12/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFDoA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 4/12/2023 <6.00 ppt 6.00 ppt Not Detected
PFPeS 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFHpS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 4/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 4/12/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 4/12/2023 <6.00 ppt 6.00 ppt Not Detected
PFEESA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 4/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/12/2023 <4.00 ppt 4.00 ppt 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 Howard 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 WI4050468 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 Howard 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
2024 Public Notice Other 4 SDWIS / WI4050468 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / WI4050468 / 5200
2023 Groundwater Rule TT 4 SDWIS / WI4050468 / 0700
2019 Revised Total Coliform Rule MON 4 SDWIS / WI4050468 / 8000
2011 Consumer Confidence Rule Other 6 SDWIS / WI4050468 / 7000
2005 Arsenic MCL 3 SDWIS / WI4050468 / 1005
2001 Gross Alpha, Excl. Radon and U MCL 27 SDWIS / WI4050468 / 4000
2001 Combined Radium (-226 and -228) MCL 26 SDWIS / WI4050468 / 4010
1994 Radium-226 MR 2 SDWIS / WI4050468 / 4020
1994 Gross Alpha, Excl. Radon and U MR 2 SDWIS / WI4050468 / 4000
1994 Radium-228 MR 2 SDWIS / WI4050468 / 4030
1992 Lead and Copper Rule MR 2 SDWIS / WI4050468 / 5000

How Howard Waterworks Compares

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

Metric Howard Waterworks Wisconsin avg Federal benchmark
Total violations 86 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 62 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 21,133 467 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Howard Waterworks water safe to drink? ▼
Howard Waterworks (PWS ID: WI4050468) has 86 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 21,133 people using Surface Water sources.
How many people does Howard Waterworks serve? ▼
Howard Waterworks serves 21,133 people in Green Bay, Wisconsin. It is a Local-owned system using Surface Water water sources with 7,827 service connections.
What type of violations does Howard Waterworks have? ▼
Howard Waterworks has 86 total violations: 62 health-based violations (MCL exceedances or treatment failures), 12 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Howard Waterworks water? ▼
No. Howard Waterworks was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Howard Waterworks use? ▼
Howard Waterworks 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.