CLWSC CANYON LAKE SHORES vs CITY OF HOUSTON
Water quality comparison — risk levels, violations, PFAS records, and contaminants
Quick Answer
Both utilities share the same risk level (safe). CLWSC CANYON LAKE SHORES has 0 open health-based violations and 928 PFAS records. CITY OF HOUSTON has 0 open health-based violations and 2784 PFAS records.
Texas · TX0460019
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
928
PFAS records
Texas · TX1010013
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
2784
PFAS records
Head-to-Head Comparison
| Metric | CLWSC CANYON LAKE SHORES | CITY OF HOUSTON |
|---|---|---|
| State | Texas | Texas |
| Risk Level | No Concerns Detected | No Concerns Detected |
| Population Served | 44,196 | 2,970,543 |
| Open Health Violations | 0 | 0 |
| Total Violations | 83 | 3 |
| PFAS Records | 928 | 2784 |
| Ownership | Private | Local |
| Service Type | Surface water | Surface water |
| City Served | — | Houston |
Contaminants in Violation Records
CLWSC CANYON LAKE SHORES
- Bromate
CITY OF HOUSTON
- Lead
- Coliform (TCR)
Key Differences
CLWSC CANYON LAKE SHORES has 928 PFAS records vs. 2784 for CITY OF HOUSTON.
What Should I Do?
If either utility shows open violations or elevated PFAS records, consider:
- Installing a reverse osmosis filter — removes PFAS, lead, arsenic, nitrates, and most heavy metals.
- Requesting your utility’s annual Consumer Confidence Report (CCR) for the most current test results.
- Ordering a certified lab water test if you want contaminant-specific data for your address.
Frequently Asked Questions
Which is safer — CLWSC CANYON LAKE SHORES or CITY OF HOUSTON?
Both utilities share the same risk level (safe). Both utilities have similar violation profiles — review the full data above to decide based on specific contaminants that concern you.
What does "open health-based violation" mean?
An open health-based violation means a water system has exceeded an EPA Maximum Contaminant Level (MCL) or failed to meet a treatment technique — and the violation has not yet been resolved. These are the most serious type of water quality violations.
How current is this data?
Violation data comes from EPA's Safe Drinking Water Information System (SDWIS), which is updated as utilities report. PFAS data comes from EPA's UCMR 5 monitoring (2023–2025). Risk levels are recalculated daily.
What does PWSID mean?
PWSID stands for Public Water System ID — a unique federal identifier assigned to each community water system. You can use it to look up a system in EPA's ECHO database.