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PUBLIC WATER SYSTEM REPORT

Is CASTLE ROCK TOWN OF Water Safe to Drink in 2026?

Colorado · PWSID CO0118010 · Surface water

Population served
106,822
Cities served
—
State / jurisdiction
Colorado (CO)
PWSID
CO0118010
F
TAP WATER GRADE
High risk
Model score 24/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
52 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS compounds detected in UCMR5 monitoring

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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFBA
5.1
—
Within / n/a
Unregulated (monitored)
PFPeA
4.7
—
Within / n/a
Unregulated (monitored)

Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 52 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.

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WHAT TO DO ABOUT IT

Based on CASTLE ROCK TOWN OF's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

TOP PICKS FOR CASTLE ROCK TOWN OF
⚠ EPA violations / contaminants in monitoring data
#1
Waterdrop G3P800 RO
EDITORS PICK
Waterdrop  ·  ~$849
Tankless 800 GPD, removes 99%+ PFAS & lead, 10-stage filtration. Smart faucet TDS display.
WHY THIS FOR CASTLE ROCK TOWN OF · Chosen for CASTLE ROCK TOWN OF because the latest federal SDWA snapshot lists substantial violation activity. Certified reverse osmosis provides the broadest residential barrier for households that want margin beyond legal compliance.
#2
Aquasana SmartFlow RO
MOST CERTIFIED
Aquasana  ·  ~$449
WQA Gold Seal + NSF 42/53/58/401. Most certifications of any under-sink RO. Removes 90+ contaminants.
#3
AquaTru Under-Sink RO
EASIEST FILTER CHANGE
AquaTru  ·  ~$375
NSF 42/53/58 certified. Quick-change filters, no tools. Compact tankless design, 4-stage filtration.
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STAY INFORMED
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We'll notify you when new PFAS data, EPA violations, or contamination alerts affect CASTLE ROCK TOWN OF (PWS CO0118010). One email, no spam, unsubscribe any time.

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