Community Water System · PWS CA3700900
Lake Henshaw Resort Inc.
Operator location Santa Ysabel, California - larger served population (> 3,309) at 9,913 people served; 30 SDWIS violations on record from groundwater sources.
- 9,913
- People served (this PWS)
- 30
- EPA violations (this PWS)
- 2
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Lake Henshaw Resort Inc. standing, mid SDWIS violation third
9,913 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). Population rank #4,725 of 29,740 among systems serving 500+.
The verdict
Lake Henshaw Resort Inc. lands in the middle third by violation volume (30), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (9,913; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 7% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #4,725 of 29,740
- Population · /systems
- #481 of 1,701
- Population · CA
- 30
- Total EPA violations on record
- 7%
- 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
- 112
- County
- San Diego
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 24
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrite | MR | 5 | 2017 |
| Nitrate | MR | 4 | 2017 |
| Lead and Copper Rule | MR | 3 | 2018 |
| Coliform (TCR) | MR | 2 | 2015 |
| Arsenic | MR | 2 | 2016 |
| Chromium | MR | 2 | 2016 |
| Revised Total Coliform Rule | MON | 2 | 2022 |
| Nitrate-Nitrite | MR | 2 | 2007 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Revised Total Coliform Rule | MCL | 2 | 2021 |
Violation Count vs. the National Corpus
Lake Henshaw Resort Inc. has 30 recorded EPA violations, 42% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 57% carry more. 7% of this system's own violations are health-based (2 of 30), and it ranks #4,725 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)
30 Lower than most fewer violations than 57% 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 Lake Henshaw Resort Inc.
EPA SDWIS lists 9,913 people served and 112 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · California State Water Resources Control Board, Division of Drinking Water
Nationwide peers
30 violations · 9,913 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.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Lake Henshaw Resort Inc.
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.