PlainWater
States → Wisconsin

Community Water System · PWS WI4690398

New London Waterworks

New London, Wisconsin 54961 - drinking water served from groundwater sources to 7,187 people, tracked in EPA SDWIS and UCMR5.

7,187
People served
447
EPA violations
4
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 447 drinking-water violations at New London Waterworks, 1% of them health-based - above the Wisconsin per-system average, and UCMR5 testing detected 1 PFAS compound.

447
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
7,187
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: New London Waterworks

New London Waterworks is a local-owned community water system that delivers drinking water to 7,187 residents in New London, Wisconsin (Waupaca County) through 2,735 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 447 total violations for this system , of which 4 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 438 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 1,2,4-Trichlorobenzene, recorded in 20 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 3.7 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

New London Waterworks's 447 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.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
7,187
Total Violations
447
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,735
County
Waupaca
School/Daycare
No
MCL Violations
4
Monitoring Violations
438
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 20 2009
cis-1,2-Dichloroethylene MR 20 2009
Xylenes, Total MR 20 2009
o-Dichlorobenzene MR 20 2009
1,1-Dichloroethylene MR 20 2009
trans-1,2-Dichloroethylene MR 20 2009
Carbon tetrachloride MR 20 2009
1,2-Dichloropropane MR 20 2009
Trichloroethylene MR 20 2009
Tetrachloroethylene MR 20 2009
Benzene MR 20 2009
Styrene MR 20 2009
DICHLOROMETHANE MR 20 2009
1,2-Dichloroethane MR 20 2009
Vinyl chloride MR 20 2009
1,1,2-Trichloroethane MR 20 2009
Toluene MR 20 2009
CHLOROBENZENE MR 20 2009
p-Dichlorobenzene MR 20 2009
1,1,1-Trichloroethane MR 20 2009
Ethylbenzene MR 20 2009
Nitrate MR 15 1994
Coliform (TCR) MCL 4 1997
Lead and Copper Rule MR 3 2012
Consumer Confidence Rule Other 1 2001

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 406 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 4/25/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/25/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 4/25/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 4/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFBS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 4/25/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFPeA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/25/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 4/25/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 4/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/25/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/25/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 4/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 4/25/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/25/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 4/25/2023 <3.00 ppt 3.00 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 New London 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 WI4690398 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 New London 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 3 SDWIS / WI4690398 / 5000
2009 1,2,4-Trichlorobenzene MR 20 SDWIS / WI4690398 / 2378
2009 cis-1,2-Dichloroethylene MR 20 SDWIS / WI4690398 / 2380
2009 Xylenes, Total MR 20 SDWIS / WI4690398 / 2955
2009 o-Dichlorobenzene MR 20 SDWIS / WI4690398 / 2968
2009 1,1-Dichloroethylene MR 20 SDWIS / WI4690398 / 2977
2009 trans-1,2-Dichloroethylene MR 20 SDWIS / WI4690398 / 2979
2009 Carbon tetrachloride MR 20 SDWIS / WI4690398 / 2982
2009 1,2-Dichloropropane MR 20 SDWIS / WI4690398 / 2983
2009 Trichloroethylene MR 20 SDWIS / WI4690398 / 2984
2009 Tetrachloroethylene MR 20 SDWIS / WI4690398 / 2987
2009 Benzene MR 20 SDWIS / WI4690398 / 2990
2009 Styrene MR 20 SDWIS / WI4690398 / 2996
2009 DICHLOROMETHANE MR 20 SDWIS / WI4690398 / 2964
2009 1,2-Dichloroethane MR 20 SDWIS / WI4690398 / 2980

How New London Waterworks Compares

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

Metric New London Waterworks Wisconsin avg Federal benchmark
Total violations 447 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 7,187 467 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 New London Waterworks water safe to drink? ▼
New London Waterworks (PWS ID: WI4690398) has 447 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 7,187 people using Groundwater sources.
How many people does New London Waterworks serve? ▼
New London Waterworks serves 7,187 people in New London, Wisconsin. It is a Local-owned system using Groundwater water sources with 2,735 service connections.
What type of violations does New London Waterworks have? ▼
New London Waterworks has 447 total violations: 4 health-based violations (MCL exceedances or treatment failures), 438 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in New London Waterworks water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in New London Waterworks's water supply: PFPeA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does New London Waterworks use? ▼
New London 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.
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.