Community Water System · PWS ID2290041
Troy City Of
Operator location Troy, Idaho - smaller served population (≤ 999) at 850 people served; 448 SDWIS violations on record from surface water sources.
- 850
- People served (this PWS)
- 448
- EPA violations (this PWS)
- 30
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Troy City Of standing, high SDWIS violation third
850 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). Population rank #21,751 of 29,740 among systems serving 500+.
The verdict
Troy City Of sits in the upper third of the sitemap cohort by violation count (448), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (850; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 7% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #21,751 of 29,740
- Population · /systems
- #143 of 249
- Population · ID
- 448
- Total EPA violations on record
- 7%
- 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
- 411
- County
- Latah
- School/Daycare
- No
- MCL Violations
- 20
- Monitoring Violations
- 393
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 28 | 2021 |
| Nitrate | MR | 20 | 2016 |
| Surface Water Treatment Rule | MR | 19 | 2021 |
| Revised Total Coliform Rule | MON | 18 | 2021 |
| Coliform (TCR) | MR | 12 | 2016 |
| Total Haloacetic Acids (HAA5) | MR | 11 | 2013 |
| Surface Water Treatment Rule | TT | 10 | 2006 |
| 2,4-D | MR | 8 | 2013 |
| 2,4,5-TP | MR | 8 | 2013 |
| Total Haloacetic Acids (HAA5) | MCL | 8 | 2016 |
| Dinoseb | MR | 7 | 2013 |
| Dalapon | MR | 7 | 2013 |
| Picloram | MR | 7 | 2013 |
| TTHM | MR | 7 | 2011 |
| Arsenic | MR | 7 | 2016 |
| Coliform (TCR) | MCL | 7 | 2010 |
| Methoxychlor | MR | 6 | 2013 |
| Toxaphene | MR | 6 | 2013 |
| BHC-GAMMA | MR | 6 | 2013 |
| Endrin | MR | 6 | 2013 |
| Diquat | MR | 5 | 2013 |
| Glyphosate | MR | 5 | 2013 |
| Di(2-ethylhexyl) adipate | MR | 5 | 2013 |
| Carbofuran | MR | 5 | 2013 |
| Atrazine | MR | 5 | 2013 |
| Heptachlor | MR | 5 | 2013 |
| HEXACHLOROBENZENE | MR | 5 | 2013 |
| Pentachlorophenol | MR | 5 | 2013 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 5 | 2013 |
| ETHYLENE DIBROMIDE | MR | 5 | 2013 |
Violation Count vs. the National Corpus
Troy City Of has 448 recorded EPA violations, 95% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 5% carry more. 7% of this system's own violations are health-based (30 of 448), and it ranks #21,751 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)
448 Higher than most more violations than 95% 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 Troy City Of
EPA SDWIS lists 850 people served and 411 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
448 violations · 850 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 smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Troy City Of
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Idaho compares on the same EPA violation measures. Idaho 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.