Community Water System · PWS ID2250017
Elk City Water and Sewer Assn
Operator location Elk City, Idaho - 61% of 337 violations are health-based (upper-third health share (> 23%)); surface water source; 320 served per SDWIS.
- 320
- People served (this PWS)
- 337
- EPA violations (this PWS)
- 206
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Elk City Water and Sewer Assn standing, high SDWIS violation third
61% of 337 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 61% is upper-third health share (> 23%).
The verdict
Elk City Water and Sewer Assn sits in the upper third of the sitemap cohort by violation count (337), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (320; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 61% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 337
- Total EPA violations on record
- 61%
- Health-based (MCL / treatment failure)
- 320
- 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
- 145
- County
- Idaho
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 128
- Treatment Tech Violations
- 202
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| CARBON, TOTAL | TT | 157 | 2023 |
| Cryptosporidium | MR | 80 | 2020 |
| Surface Water Treatment Rule | TT | 40 | 2005 |
| CARBON, TOTAL | MR | 11 | 2023 |
| Chlorine | MR | 6 | 2020 |
| Groundwater Rule | TT | 5 | 2018 |
| Nitrate | MR | 4 | 2015 |
| TTHM | MCL | 4 | 2017 |
| Surface Water Treatment Rule | MR | 4 | 2020 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2025 |
| Coliform (TCR) | MR | 3 | 2008 |
| TTHM | MR | 3 | 2025 |
| 2,4-D | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Endrin | MR | 1 | 1979 |
| Toxaphene | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| BHC-GAMMA | MR | 1 | 1979 |
| Methoxychlor | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| 2,4,5-TP | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
Violation Count vs. the National Corpus
Elk City Water and Sewer Assn has 337 recorded EPA violations, 92% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 8% carry more. 61% of this system's own violations are health-based (206 of 337), 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)
337 Higher than most more violations than 92% 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 Elk City Water and Sewer Assn
206 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for ID2250017.
Sources: EPA SDWIS
Nationwide peers
337 violations · 320 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 Elk City Water and Sewer Assn
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.