Transient Non-Community Water System · PWS ME0094735
Rocky Knoll Country Club
Operator location Ellsworth, Maine - smaller served population (≤ 999) at 147 people served; 253 SDWIS violations on record from groundwater sources.
- 147
- People served (this PWS)
- 253
- EPA violations (this PWS)
- 29
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Rocky Knoll Country Club standing, high SDWIS violation third
147 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 11% is middle-third health share (≤ 23%).
The verdict
Rocky Knoll Country Club sits in the upper third of the sitemap cohort by violation count (253), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (147; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 11% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 253
- Total EPA violations on record
- 11%
- Health-based (MCL / treatment failure)
- 147
- 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
- Private
- Connections
- 1
- County
- Penobscot
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 186
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 92 | 2025 |
| Coliform (TCR) | MR | 64 | 2016 |
| Public Notice | Other | 31 | 2025 |
| Coliform (TCR) | MCL | 22 | 2010 |
| Nitrate | MR | 17 | 2024 |
| Nitrite | MR | 9 | 2012 |
| Revised Total Coliform Rule | TT | 7 | 2020 |
| E. COLI | MR | 4 | 2019 |
| Revised Total Coliform Rule | RPT | 4 | 2020 |
Violation Count vs. the National Corpus
Rocky Knoll Country Club has 253 recorded EPA violations, 88% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 12% carry more. 11% of this system's own violations are health-based (29 of 253), 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)
253 Higher than most more violations than 88% 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 Rocky Knoll Country Club
EPA SDWIS lists 147 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
Nationwide peers
253 violations · 147 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 Rocky Knoll Country Club
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Maine compares on the same EPA violation measures. Maine 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.