Community Water System · PWS WI8610125
Medford Waterworks
Operator location Medford, Wisconsin - 0% of 256 violations are health-based (lower-third health share (≤ 1%)); groundwater source; 4,318 served per SDWIS.
- 4,318
- People served (this PWS)
- 256
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- 3 PFAS
- UCMR5 (this PWS)
Medford Waterworks standing, high SDWIS violation third
0% of 256 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #8,435 of 29,740 among systems serving 500+.
The verdict
Medford Waterworks sits in the upper third of the sitemap cohort by violation count (256), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (4,318; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is only 0% - almost all of this trail is monitoring or reporting. UCMR5 detected 3 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #8,435 of 29,740
- Population · /systems
- #156 of 744
- Population · WI
- 256
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,829
- County
- Taylor
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 254
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| 1,1,2-Trichloroethane | MR | 10 | 2018 |
| Styrene | MR | 10 | 2018 |
| 1,2,4-Trichlorobenzene | MR | 10 | 2018 |
| p-Dichlorobenzene | MR | 10 | 2018 |
| o-Dichlorobenzene | MR | 10 | 2018 |
| 1,2-Dichloroethane | MR | 10 | 2018 |
| cis-1,2-Dichloroethylene | MR | 10 | 2018 |
| 1,1-Dichloroethylene | MR | 10 | 2018 |
| 1,1,1-Trichloroethane | MR | 10 | 2018 |
| Trichloroethylene | MR | 10 | 2018 |
| CHLOROBENZENE | MR | 10 | 2018 |
| Carbon tetrachloride | MR | 10 | 2018 |
| DICHLOROMETHANE | MR | 10 | 2018 |
| Ethylbenzene | MR | 10 | 2018 |
| trans-1,2-Dichloroethylene | MR | 10 | 2018 |
| 1,2-Dichloropropane | MR | 10 | 2018 |
| Tetrachloroethylene | MR | 10 | 2018 |
| Xylenes, Total | MR | 10 | 2018 |
| Vinyl chloride | MR | 10 | 2018 |
| Toluene | MR | 10 | 2018 |
| Benzene | MR | 10 | 2018 |
| Coliform (TCR) | MR | 8 | 2012 |
| Chlorine | MR | 8 | 2012 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2018 |
| Combined Uranium | MR | 4 | 2018 |
| Combined Radium (-226 and -228) | MR | 4 | 2018 |
| Radium-226 | MR | 4 | 2018 |
| TTHM | MR | 4 | 2018 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2018 |
| Radium-228 | MR | 4 | 2018 |
Violation Count vs. the National Corpus
Medford Waterworks has 256 recorded EPA violations, 89% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 11% carry more. 0% of this system's own violations are health-based (0 of 256), and it ranks #8,435 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
256 Higher than most more violations than 89% 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. 4 of 348 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHpS | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 9/9/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 9/9/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 9/9/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 9/9/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFDA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 9/9/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 6:2 FTS | 9/9/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOA | 9/9/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 9/9/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/9/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/9/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 9/9/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 9/9/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 9/9/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOS | 9/9/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeS | 8/20/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 8/20/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 8/20/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NEtFOSAA | 8/20/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 8/20/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFMBA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 8/20/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 8/20/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 8/20/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/20/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| HFPO-DA | 8/20/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/20/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/20/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 8/20/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 8/20/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 8/20/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 8/20/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 8/20/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
Health-based violations on Medford Waterworks
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for WI8610125.
Sources: EPA SDWIS · Wisconsin DNR, Drinking Water and Groundwater
Nationwide peers
256 violations · 4,318 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.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Medford Waterworks
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.