Community Water System · PWS WI4051698
Hobart Waterworks S a 1
Operator location Hobart, Wisconsin - larger served population (> 3,309) at 3,670 people served; 67 SDWIS violations on record from surface water sources.
- 3,670
- People served (this PWS)
- 67
- EPA violations (this PWS)
- 4
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Hobart Waterworks S a 1 standing, mid SDWIS violation third
3,670 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 6% is middle-third health share (≤ 23%). Population rank #9,352 of 29,740 among systems serving 500+.
The verdict
Hobart Waterworks S a 1 lands in the middle third by violation volume (67), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (3,670; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 6% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #9,352 of 29,740
- Population · /systems
- #176 of 744
- Population · WI
- 67
- Total EPA violations on record
- 6%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,359
- County
- Brown
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 57
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 33 | 2023 |
| TTHM | MR | 16 | 2023 |
| Lead and Copper Rule | MR | 8 | 2018 |
| Public Notice | Other | 4 | 2013 |
| Coliform (TCR) | MCL | 4 | 1998 |
| Consumer Confidence Rule | Other | 2 | 2024 |
Violation Count vs. the National Corpus
Hobart Waterworks S a 1 has 67 recorded EPA violations, 64% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 36% carry more. 6% of this system's own violations are health-based (4 of 67), and it ranks #9,352 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)
67 Around the middle fewer violations than 36% 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 Hobart Waterworks S a 1
EPA SDWIS lists 3,670 people served and 1,359 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
67 violations · 3,670 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Hobart Waterworks S a 1
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.