Tap water quality for ZIP 78133
8 community water systems linked to this ZIP, largest first.
What this means for you in ZIP 78133
- Is it safe to drink right now?
- Based on the latest EPA data, Clwsc Canyon Lake Shores has no unresolved health-based violations from the past year. Water that meets federal standards is generally considered safe to drink for most healthy people.
- Should I use a filter?
- It's worth considering. Clwsc Canyon Lake Shores has a D because of its violation record over the past 5 years (6 health-based), even though nothing is flagged as unresolved in the last year. A filter matched to the contaminants in its violation history is a reasonable precaution.
- What kind of filter?
- See matched standards and product picks.
This is general information from public EPA data, not medical advice. Lead often comes from a home’s own pipes, so only a test of your tap can tell your exposure. If you are pregnant, caring for an infant, or have a weakened immune system, ask your doctor or health department.
Shown for the largest system linked to this ZIP. Check your water bill to confirm your provider.
Filters matched to Clwsc Canyon Lake Shores
FILTER PICKS
Look for filters certified (NSF, IAPMO or WQA) to these standards for the specific contaminant. Buttons open the maker’s page or an Amazon search; use “Check NSF listing” to verify a model’s claims. No affiliate links yet — grades are never sold.
Total Trihalomethanes (TTHM)
NSF/ANSI 53 (VOC claim)Carbon block undersink (VOC claim) ~$80–150
Choose a filter whose NSF/ANSI 53 certificate lists VOCs / TTHM.
Search on Amazon → Check NSF listing · Not an affiliate link · disclosure
Chlorine/chloramine taste
NSF/ANSI 42Aquasana Clean Water Pitcher ~$35
Pitcher for chlorine taste/odor; check the NSF/ANSI 42 listing for the exact model.
Search on Amazon → Check NSF listing · Not an affiliate link · disclosure
Brita Elite Filter ~$20–40
Common faucet/pitcher option; confirm the 42 claim on the box.
View on Brita → Check NSF listing · Not an affiliate link · disclosure
Annual water quality report
Utilities must publish a Consumer Confidence Report every year by July 1. Find it on the utility’s website or ask them directly; EPA explains how. · Full report →
Water systems for this ZIP
D
Clwsc Canyon Lake Shores
Serves 44,196 people · Surface water · Full report →
6 health-based violations in the last 5 years; 6 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
D
Sjwtx Triple Peak Plant
Serves 32,973 people · Surface water · Full report →
1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Other PFAS above 2024 limits (rule proposed for repeal): PFHxS, Hazard Index; Lead 90th percentile below the action level (2025).
A
Canyon Springs Water
Serves 1,528 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
B
Kings Point WSC
Serves 174 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Canyon Lake Mobile Home Estates
Serves 2,202 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
C
Scenic Heights
Serves 336 people · Groundwater · Full report →
2 health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
A
Westhaven WSC
Serves 210 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
C
Canyon Lake Estates Water Supply
Serves 171 people · Groundwater · Full report →
2 health-based violations in the last 5 years; 60 monitoring/reporting violations; 2 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2026).
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