Non-Transient Non-Community Water System · PWS WI8581084
Concor Tool and Machine Inc
Operator location Hayward, Wisconsin - smaller served population (≤ 999) at 57 people served; 103 SDWIS violations on record from groundwater sources.
- 57
- People served (this PWS)
- 103
- EPA violations (this PWS)
- 7
- Health-based (this PWS)
- 4 PFAS
- UCMR5 (this PWS)
Concor Tool and Machine Inc standing, high SDWIS violation third
57 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds).
The verdict
Concor Tool and Machine Inc sits in the upper third of the sitemap cohort by violation count (103), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (57; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 7% (middle-third health share (≤ 23%)). UCMR5 detected 4 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- 103
- Total EPA violations on record
- 7%
- Health-based (MCL / treatment failure)
- 57
- People served by this PWS (SDWIS)
- 4
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Sawyer
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 88
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 17 | 2004 |
| Lead and Copper Rule | MR | 15 | 2015 |
| Nitrate | MR | 8 | 2004 |
| Public Notice | Other | 8 | 2014 |
| Lead and Copper Rule | TT | 7 | 2014 |
| Dalapon | MR | 2 | 1995 |
| OXAMYL | MR | 2 | 1995 |
| Dinoseb | MR | 2 | 1995 |
| Picloram | MR | 2 | 1995 |
| Aldicarb sulfone | MR | 2 | 1995 |
| Carbofuran | MR | 2 | 1995 |
| BHC-GAMMA | MR | 2 | 1995 |
| Heptachlor epoxide | MR | 2 | 1995 |
| LASSO | MR | 2 | 1995 |
| Atrazine | MR | 2 | 1995 |
| Total Polychlorinated Biphenyls (PCB) | MR | 2 | 1995 |
| Pentachlorophenol | MR | 2 | 1995 |
| 2,4-D | MR | 2 | 1995 |
| Aldicarb | MR | 2 | 1995 |
| Chlordane | MR | 2 | 1995 |
| 2,4,5-TP | MR | 2 | 1995 |
| Aldicarb sulfoxide | MR | 2 | 1995 |
| Heptachlor | MR | 2 | 1995 |
| HEXACHLOROBENZENE | MR | 2 | 1995 |
| Methoxychlor | MR | 2 | 1995 |
| Hexachlorocyclopentadiene | MR | 2 | 1995 |
| Endrin | MR | 2 | 1995 |
| Simazine | MR | 2 | 1995 |
| Toxaphene | MR | 2 | 1995 |
Violation Count vs. the National Corpus
Concor Tool and Machine Inc has 103 recorded EPA violations, 74% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 26% carry more. 7% of this system's own violations are health-based (7 of 103), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
103 Around the middle fewer violations than 26% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 7 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NEtFOSAA | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 4/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 4/18/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 4/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 4/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 4/18/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/18/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFUnA | 4/18/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 4/18/2023 | 6.10 ppt | 4.00 ppt | Detected |
| PFOS | 4/18/2023 | 5.70 ppt | 4.00 ppt | Detected |
| PFNA | 4/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 4/18/2023 | 5.00 ppt | 3.00 ppt | Detected |
| PFTrDA | 4/18/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NMeFOSAA | 4/18/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| ADONA | 4/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 10/16/2023 | 6.70 ppt | 4.00 ppt | Detected |
| NFDHA | 10/16/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHxS | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 10/16/2023 | 3.10 ppt | 3.00 ppt | Detected |
| NMeFOSAA | 10/16/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 10/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 10/16/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 10/16/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFPeS | 10/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 10/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 10/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 10/16/2023 | 3.20 ppt | 3.00 ppt | Detected |
| PFHpA | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 10/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOA | 10/16/2023 | 8.50 ppt | 4.00 ppt | Detected |
| PFDoA | 10/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
Population served record for Concor Tool and Machine Inc
EPA SDWIS lists 57 people served and 1 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Wisconsin DNR, Drinking Water and Groundwater
Nationwide peers
103 violations · 57 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Concor Tool and Machine Inc
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Wisconsin compares on the same EPA violation measures. Wisconsin systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.