Non-Transient Non-Community Water System · PWS CA1200522
Whitethorn Elementary School
Operator location Miranda, California - 24% of 51 violations are health-based (upper-third health share (> 23%)); surface water source; 42 served per SDWIS.
- 42
- People served (this PWS)
- 51
- EPA violations (this PWS)
- 12
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Whitethorn Elementary School standing, mid SDWIS violation third
24% of 51 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 24% is upper-third health share (> 23%).
The verdict
Whitethorn Elementary School lands in the middle third by violation volume (51), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (42; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 24% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 51
- Total EPA violations on record
- 24%
- Health-based (MCL / treatment failure)
- 42
- 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
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Humboldt
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 4
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Interim Enhanced Surface Water Treatment Rule | TT | 5 | 2017 |
| Consumer Confidence Rule | Other | 4 | 2024 |
| Surface Water Treatment Rule | TT | 4 | 1994 |
| Surface Water Treatment Rule | MR | 2 | 2010 |
| Groundwater Rule | Other | 2 | 2019 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 2 | 2019 |
| Coliform (TCR) | MR | 2 | 2006 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
Violation Count vs. the National Corpus
Whitethorn Elementary School has 51 recorded EPA violations, 57% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 43% carry more. 24% of this system's own violations are health-based (12 of 51), 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)
51 Around the middle fewer violations than 43% 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 Whitethorn Elementary School
12 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CA1200522.
Sources: EPA SDWIS · California State Water Resources Control Board, Division of Drinking Water
Nationwide peers
51 violations · 42 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.
What to do with Whitethorn Elementary School
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in California compares on the same EPA violation measures. California 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.