Community Water System · PWS ID1090009
Stoneridge Utilities
Operator location Blanchard, Idaho - smaller served population (≤ 999) at 940 people served; 63 SDWIS violations on record from groundwater sources.
- 940
- People served (this PWS)
- 63
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Stoneridge Utilities standing, mid SDWIS violation third
940 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 5% is middle-third health share (≤ 23%). Population rank #20,539 of 29,740 among systems serving 500+.
The verdict
Stoneridge Utilities lands in the middle third by violation volume (63), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (940; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 5% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #20,539 of 29,740
- Population · /systems
- #133 of 249
- Population · ID
- 63
- Total EPA violations on record
- 5%
- 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
- Private
- Connections
- 376
- County
- Bonner
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 57
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 7 | 2014 |
| Chlorine | MR | 4 | 2018 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2025 |
| Coliform (TCR) | MCL | 3 | 1998 |
| Nitrate | MR | 3 | 1998 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 1993 |
| LASSO | MR | 1 | 1993 |
| Chlordane | MR | 1 | 1993 |
| Heptachlor | MR | 1 | 1993 |
| Heptachlor epoxide | MR | 1 | 1993 |
| Methoxychlor | MR | 1 | 1993 |
| Toxaphene | MR | 1 | 1993 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1993 |
| Pentachlorophenol | MR | 1 | 1993 |
| 2,4-D | MR | 1 | 1993 |
| Carbofuran | MR | 1 | 1993 |
| Benzene | MR | 1 | 1993 |
| Carbon tetrachloride | MR | 1 | 1993 |
| 1,1-Dichloroethylene | MR | 1 | 1993 |
| trans-1,2-Dichloroethylene | MR | 1 | 1993 |
| 1,2-Dichloroethane | MR | 1 | 1993 |
| 1,2-Dichloropropane | MR | 1 | 1993 |
| p-Dichlorobenzene | MR | 1 | 1993 |
| Xylenes, Total | MR | 1 | 1993 |
| Barium | MR | 1 | 1993 |
| Selenium | MR | 1 | 1993 |
| Fluoride | MR | 1 | 1993 |
| Nitrite | MR | 1 | 1993 |
| Atrazine | MR | 1 | 1993 |
Violation Count vs. the National Corpus
Stoneridge Utilities has 63 recorded EPA violations, 63% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 37% carry more. 5% of this system's own violations are health-based (3 of 63), and it ranks #20,539 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)
63 Around the middle fewer violations than 37% 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 Stoneridge Utilities
EPA SDWIS lists 940 people served and 376 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
63 violations · 940 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 smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Stoneridge Utilities
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.