Community Water System · PWS ID6210012
Preston Eastside Water Co
Operator location Preston, Idaho - smaller served population (≤ 999) at 120 people served; 259 SDWIS violations on record from groundwater sources.
- 120
- People served (this PWS)
- 259
- EPA violations (this PWS)
- 19
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Preston Eastside Water Co standing, high SDWIS violation third
120 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%).
The verdict
Preston Eastside Water Co sits in the upper third of the sitemap cohort by violation count (259), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (120; 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.
- 259
- Total EPA violations on record
- 7%
- Health-based (MCL / treatment failure)
- 120
- 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
- 42
- County
- Franklin
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 198
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | MR | 95 | 2025 |
| Lead and Copper Rule | MR | 27 | 2025 |
| Revised Total Coliform Rule | MON | 17 | 2025 |
| Coliform (TCR) | MCL | 12 | 2011 |
| Coliform (TCR) | MR | 12 | 2004 |
| Groundwater Rule | Other | 11 | 2022 |
| LEAD AND COPPER RULE REVISIONS | RPT | 7 | 2025 |
| Chlorine | MR | 6 | 2024 |
| Public Notice | Other | 5 | 2025 |
| Groundwater Rule | TT | 4 | 2020 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| ETHYLENE DIBROMIDE | MR | 2 | 1993 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 1993 |
| Atrazine | MR | 2 | 1993 |
| BHC-GAMMA | MR | 2 | 1993 |
| Methoxychlor | MR | 2 | 1993 |
| Toxaphene | MR | 2 | 1993 |
| Pentachlorophenol | MR | 2 | 1993 |
| 2,4-D | MR | 2 | 1993 |
| 2,4,5-TP | MR | 2 | 1993 |
| Carbofuran | MR | 2 | 1993 |
| Heptachlor | MR | 2 | 1993 |
| Chlordane | MR | 2 | 1993 |
| Total Polychlorinated Biphenyls (PCB) | MR | 2 | 1993 |
| Heptachlor epoxide | MR | 2 | 1993 |
| LASSO | MR | 2 | 1993 |
| Arsenic | MR | 1 | 1979 |
| Nitrate | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
Violation Count vs. the National Corpus
Preston Eastside Water Co has 259 recorded EPA violations, 89% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 11% carry more. 7% of this system's own violations are health-based (19 of 259), 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)
259 Higher than most more violations than 89% 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 Preston Eastside Water Co
EPA SDWIS lists 120 people served and 42 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
259 violations · 120 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 Preston Eastside Water Co
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.