Community Water System · PWS CA5010026
Waterford - Hickman
Operator location Waterford, California - 50% of 4 violations are health-based (upper-third health share (> 23%)); groundwater source; 597 served per SDWIS.
- 597
- People served (this PWS)
- 4
- EPA violations (this PWS)
- 2
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Waterford - Hickman standing, low SDWIS violation third
50% of 4 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 50% is upper-third health share (> 23%). Population rank #26,631 of 29,740 among systems serving 500+.
The verdict
Waterford - Hickman is in the lower third by violation count (4; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is smaller (597; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 50% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #26,631 of 29,740
- Population · /systems
- #1,513 of 1,701
- Population · CA
- 4
- Total EPA violations on record
- 50%
- 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
- Local
- Connections
- 183
- County
- Stanislaus
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 2
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 2 | 1992 |
| Lead and Copper Rule | MR | 1 | 1993 |
| Coliform (TCR) | MR | 1 | 1997 |
Violation Count vs. the National Corpus
Waterford - Hickman has 4 recorded EPA violations, 8% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 90% carry more. 50% of this system's own violations are health-based (2 of 4), and it ranks #26,631 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)
4 Among the lowest violation counts fewer violations than 90% 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 Waterford - Hickman
2 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CA5010026.
Sources: EPA SDWIS · California State Water Resources Control Board, Division of Drinking Water
Nationwide peers
4 violations · 597 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
- Odawa Casino Mackinaw EPA Region 5 — Tribal Water Systems 4violations
- Whitetail Crossing Casino EPA Region 5 — Tribal Water Systems 4violations
- Acoma Sky City Travel Center Express EPA Region 6 — Tribal Water Systems 4violations
- Hard Rock Fire Mountain Water System EPA Region 9 — Tribal Water Systems 4violations
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Waterford - Hickman
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.