Community Water System · PWS WI4380440
Northland Mission
Operator location Dunbar, Wisconsin - smaller served population (≤ 999) at 75 people served; 329 SDWIS violations on record from groundwater sources.
- 75
- People served (this PWS)
- 329
- EPA violations (this PWS)
- 6
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Northland Mission standing, high SDWIS violation third
75 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%).
The verdict
Northland Mission sits in the upper third of the sitemap cohort by violation count (329), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (75; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 329
- Total EPA violations on record
- 2%
- Health-based (MCL / treatment failure)
- 75
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 29
- County
- Marinette
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 314
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 21 | 2025 |
| E. COLI | MR | 11 | 2025 |
| Consumer Confidence Rule | Other | 9 | 2008 |
| BHC-GAMMA | MR | 8 | 2024 |
| Methoxychlor | MR | 8 | 2024 |
| Toxaphene | MR | 8 | 2024 |
| Glyphosate | MR | 8 | 2024 |
| Simazine | MR | 8 | 2024 |
| Picloram | MR | 8 | 2024 |
| Dinoseb | MR | 8 | 2024 |
| Heptachlor | MR | 8 | 2024 |
| Heptachlor epoxide | MR | 8 | 2024 |
| 2,4,5-TP | MR | 8 | 2024 |
| HEXACHLOROBENZENE | MR | 8 | 2024 |
| Chlordane | MR | 8 | 2024 |
| Nitrate | MR | 8 | 2024 |
| Endrin | MR | 8 | 2024 |
| Dalapon | MR | 8 | 2024 |
| Endothall | MR | 8 | 2024 |
| Pentachlorophenol | MR | 8 | 2024 |
| Diquat | MR | 8 | 2024 |
| OXAMYL | MR | 8 | 2024 |
| LASSO | MR | 8 | 2024 |
| Hexachlorocyclopentadiene | MR | 8 | 2024 |
| Carbofuran | MR | 8 | 2024 |
| 2,4-D | MR | 8 | 2024 |
| Atrazine | MR | 8 | 2024 |
| o-Dichlorobenzene | MR | 4 | 2024 |
| Xylenes, Total | MR | 4 | 2024 |
| Trichloroethylene | MR | 4 | 2024 |
Violation Count vs. the National Corpus
Northland Mission has 329 recorded EPA violations, 92% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 8% carry more. 2% of this system's own violations are health-based (6 of 329), 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)
329 Higher than most more violations than 92% 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
Population served record for Northland Mission
EPA SDWIS lists 75 people served and 29 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
329 violations · 75 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 Northland Mission
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.