Non-Transient Non-Community Water System · PWS AZ0413087
Chino Valley High School
Operator location Chino Valley, Arizona - UCMR5 detected 2 PFAS compounds (lower-third PFAS panel (≤ 2 compounds)) on this PWS; SDWIS lists 97 violations and 960 people served.
- 960
- People served (this PWS)
- 97
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- 2 PFAS
- UCMR5 (this PWS)
Chino Valley High School standing, high SDWIS violation third
UCMR5 detected 2 PFAS compounds - lower-third PFAS panel (≤ 2 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). UCMR5: lower-third PFAS panel (≤ 2 compounds). Population rank #20,235 of 29,740 among systems serving 500+.
The verdict
Chino Valley High School sits in the upper third of the sitemap cohort by violation count (97), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (960; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 3% (middle-third health share (≤ 23%)). UCMR5 detected 2 PFAS compounds (lower-third PFAS panel (≤ 2 compounds)).
- #20,235 of 29,740
- Population · /systems
- #281 of 413
- Population · AZ
- 97
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 18
- County
- Yavapai
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 85
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 12 | 2011 |
| Nitrate | MR | 6 | 2001 |
| Lead and Copper Rule | MR | 3 | 2019 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| Styrene | MR | 2 | 2002 |
| Cadmium | MR | 2 | 1989 |
| Fluoride | MR | 2 | 1989 |
| Chromium | MR | 2 | 1989 |
| Arsenic | MR | 2 | 1989 |
| Selenium | MR | 2 | 1989 |
| Mercury | MR | 2 | 1989 |
| Barium | MR | 2 | 1989 |
| Public Notice | Other | 2 | 2024 |
| cis-1,2-Dichloroethylene | MR | 2 | 2002 |
| DICHLOROMETHANE | MR | 1 | 1998 |
| o-Dichlorobenzene | MR | 1 | 1998 |
| 1,1-Dichloroethylene | MR | 1 | 1998 |
| 1,2-Dichloroethane | MR | 1 | 1998 |
| Trichloroethylene | MR | 1 | 1998 |
| 1,1,2-Trichloroethane | MR | 1 | 1998 |
| Tetrachloroethylene | MR | 1 | 1998 |
| CHLOROBENZENE | MR | 1 | 1998 |
| Benzene | MR | 1 | 1998 |
| Toluene | MR | 1 | 1998 |
| BHC-GAMMA | MR | 1 | 1998 |
| Toxaphene | MR | 1 | 1998 |
| Diquat | MR | 1 | 1998 |
| Glyphosate | MR | 1 | 1998 |
| OXAMYL | MR | 1 | 1998 |
Violation Count vs. the National Corpus
Chino Valley High School has 97 recorded EPA violations, 73% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 27% carry more. 3% of this system's own violations are health-based (3 of 97), and it ranks #20,235 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)
97 Around the middle fewer violations than 27% 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
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 4/29/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFMBA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 4/29/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 4/29/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NMeFOSAA | 4/29/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 4/29/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NEtFOSAA | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/29/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFPeA | 4/29/2024 | 3.00 ppt | 3.00 ppt | Detected |
| PFOS | 4/29/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| HFPO-DA | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 4/29/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 4/29/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 4/29/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 4/29/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxS | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 4/29/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 10/16/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHxA | 10/16/2024 | 3.10 ppt | 3.00 ppt | Detected |
| PFDoA | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 10/16/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 10/16/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 10/16/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 10/16/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 10/16/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMPA | 10/16/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 10/16/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 10/16/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFHpA | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 10/16/2024 | 3.50 ppt | 3.00 ppt | Detected |
| PFHpS | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 10/16/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 10/16/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| 4:2 FTS | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 10/16/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
UCMR5 PFAS record for Chino Valley High School
Open EPA SDWIS federal reports for PWS AZ0413087 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · Arizona DEQ, Drinking Water Program
Nationwide peers
97 violations · 960 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 Chino Valley High School
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.