Community Water System · PWS AZ0415497
Ehrenberg Improvement District
Operator location Ehrenberg, Arizona - smaller served population (≤ 999) at 989 people served; 240 SDWIS violations on record from surface water sources.
- 989
- People served (this PWS)
- 240
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Ehrenberg Improvement District standing, high SDWIS violation third
989 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). Population rank #19,957 of 29,740 among systems serving 500+.
The verdict
Ehrenberg Improvement District sits in the upper third of the sitemap cohort by violation count (240), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (989; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #19,957 of 29,740
- Population · /systems
- #276 of 413
- Population · AZ
- 240
- Total EPA violations on record
- 2%
- 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
- 318
- County
- La Paz
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 206
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 46 | 2009 |
| Chlorine | MR | 40 | 2024 |
| TTHM | MR | 20 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 17 | 2023 |
| Consumer Confidence Rule | Other | 15 | 2015 |
| Lead and Copper Rule | MR | 8 | 2017 |
| Nitrate | MR | 7 | 2000 |
| E. COLI | MR | 5 | 2018 |
| Chromium | MR | 3 | 1989 |
| Barium | MR | 3 | 1989 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1989 |
| Arsenic | MR | 3 | 1989 |
| Selenium | MR | 3 | 1989 |
| Cadmium | MR | 3 | 1989 |
| Fluoride | MR | 3 | 1989 |
| Mercury | MR | 3 | 1989 |
| TTHM | MCL | 2 | 2007 |
| Public Notice | Other | 2 | 2022 |
| Coliform (TCR) | MCL | 2 | 2000 |
| Endrin | MR | 2 | 1999 |
| BHC-GAMMA | MR | 2 | 1999 |
| Toxaphene | MR | 2 | 1999 |
| Methoxychlor | MR | 2 | 1999 |
| 2,4-D | MR | 2 | 1999 |
| 2,4,5-TP | MR | 2 | 1999 |
| Surface Water Treatment Rule | MR | 2 | 2020 |
| Interim Enhanced Surface Water Treatment Rule | MR | 2 | 2020 |
| Dalapon | MR | 1 | 1999 |
| Diquat | MR | 1 | 1999 |
| OXAMYL | MR | 1 | 1999 |
Violation Count vs. the National Corpus
Ehrenberg Improvement District has 240 recorded EPA violations, 88% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 12% carry more. 2% of this system's own violations are health-based (5 of 240), and it ranks #19,957 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)
240 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 Ehrenberg Improvement District
EPA SDWIS lists 989 people served and 318 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Arizona DEQ, Drinking Water Program
Nationwide peers
240 violations · 989 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 Ehrenberg Improvement District
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Arizona compares on the same EPA violation measures. Arizona 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.