Transient Non-Community Water System · PWS WI7290272
Castle Rock Park 5
Operator location Mauston, Wisconsin - 35% of 23 violations are health-based (upper-third health share (> 23%)); groundwater source; 100 served per SDWIS.
- 100
- People served (this PWS)
- 23
- EPA violations (this PWS)
- 8
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Castle Rock Park 5 standing, mid SDWIS violation third
35% of 23 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 35% is upper-third health share (> 23%).
The verdict
Castle Rock Park 5 lands in the middle third by violation volume (23), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (100; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 35% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 23
- Total EPA violations on record
- 35%
- Health-based (MCL / treatment failure)
- 100
- 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
- Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Juneau
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 15
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 8 | 2000 |
| Nitrate | MR | 5 | 1995 |
| Nitrite | MR | 5 | 1995 |
| Coliform (TCR) | MR | 5 | 1995 |
Violation Count vs. the National Corpus
Castle Rock Park 5 has 23 recorded EPA violations, 35% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 64% carry more. 35% of this system's own violations are health-based (8 of 23), 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)
23 Lower than most fewer violations than 64% 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
Health-based violations on Castle Rock Park 5
8 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for WI7290272.
Sources: EPA SDWIS · Wisconsin DNR, Drinking Water and Groundwater
Nationwide peers
23 violations · 100 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.
What to do with Castle Rock Park 5
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.