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PUBLIC WATER SYSTEM REPORT

Is GENERAL MOTOR PROVING GR Water Safe to Drink in 2026?

Arizona · PWSID AZ0407623 · Ground water

Population served
700
Cities served
WILLIAMS
State / jurisdiction
Arizona (AZ)
PWSID
AZ0407623
D
TAP WATER GRADE
Poor
Model score 49/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
8 violation record(s) in the latest EPA SDWA quarterly snapshot

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CONTAMINANTS — EPA UCMR5 MONITORING

No UCMR5 PFAS detects on file for this PWS in our bundled national dataset — the system may be smaller than UCMR5 thresholds, had non-detects, or results are not yet linked to this ID. Your retailer Annual Water Quality Report lists other regulated contaminants (chlorine, DBPs, nitrates, etc.).

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 8 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 GENERAL MOTOR PROVING GR's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

TOP PICKS FOR GENERAL MOTOR PROVING GR
⚠ 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 GENERAL MOTOR PROVING GR · Chosen for GENERAL MOTOR PROVING GR because EPA’s SDWA snapshot shows active violation records. RO addresses a wide range of regulated contaminants, not just chlorine taste.
#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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