Community Water System · PWS AZ0413042
Cs Oak Creek Public Service LLC
Operator location Des Peres, Arizona - smaller served population (≤ 999) at 650 people served; 231 SDWIS violations on record from groundwater sources.
- 650
- People served (this PWS)
- 231
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Cs Oak Creek Public Service LLC standing, high SDWIS violation third
650 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 1% is middle-third health share (≤ 23%). Population rank #25,192 of 29,740 among systems serving 500+.
The verdict
Cs Oak Creek Public Service LLC sits in the upper third of the sitemap cohort by violation count (231), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (650; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 1% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #25,192 of 29,740
- Population · /systems
- #354 of 413
- Population · AZ
- 231
- Total EPA violations on record
- 1%
- 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
- 260
- County
- Yavapai
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 173
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 35 | 2023 |
| Arsenic | MR | 23 | 2025 |
| Coliform (TCR) | MR | 20 | 2015 |
| Consumer Confidence Rule | Other | 16 | 2023 |
| Lead and Copper Rule | MR | 10 | 2017 |
| TTHM | MR | 6 | 2018 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2018 |
| Mercury | MR | 5 | 2015 |
| Selenium | MR | 5 | 2015 |
| Nitrate | MR | 5 | 2006 |
| Chromium | MR | 5 | 2015 |
| Barium | MR | 5 | 2015 |
| Cadmium | MR | 5 | 2015 |
| Fluoride | MR | 5 | 2015 |
| Revised Total Coliform Rule | RPT | 4 | 2023 |
| CYANIDE | MR | 3 | 2015 |
| Antimony, Total | MR | 3 | 2015 |
| Nickel | MR | 3 | 2015 |
| Beryllium, Total | MR | 3 | 2015 |
| Thallium, Total | MR | 3 | 2015 |
| Arsenic | MCL | 3 | 2007 |
| E. COLI | MR | 2 | 2015 |
| cis-1,2-Dichloroethylene | MR | 1 | 1999 |
| Xylenes, Total | MR | 1 | 1999 |
| o-Dichlorobenzene | MR | 1 | 1999 |
| Carbon tetrachloride | MR | 1 | 1999 |
| 1,1-Dichloroethylene | MR | 1 | 1999 |
| 1,2-Dichloroethane | MR | 1 | 1999 |
| 1,1,1-Trichloroethane | MR | 1 | 1999 |
| Trichloroethylene | MR | 1 | 1999 |
Violation Count vs. the National Corpus
Cs Oak Creek Public Service LLC has 231 recorded EPA violations, 87% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 13% carry more. 1% of this system's own violations are health-based (3 of 231), and it ranks #25,192 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)
231 Higher than most more violations than 87% 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 Cs Oak Creek Public Service LLC
EPA SDWIS lists 650 people served and 260 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
231 violations · 650 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 Cs Oak Creek Public Service LLC
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.