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Water System Detail Information

Water System No.:

AZ0403702

Federal Type:

C

Water System Name:

GRAND CANYON NATIONAL PARK

Primary Source:

GW

Principal County Served:

COCONINO

System Status:

A - MAP

Comments:

Activity Date:

06-01-1977




Parties Present
Name Organization Phone Number
ANDERSON, KATIE null 602-702-4090
HANNERS, DEIRDRE 928-638-7907
KOENIG, PAUL L 928-606-3308


Deficiencies/Recommendations
Category Severity Description Code
Description Text		 Comments Determine
Date		 Resolved
Date
SO MIN 2 -Between 1:500 and 1:5,000 Grand Canyon National Park failed to provide photographic evidence that all storage tanks onsite have a #16 mesh screen on the air vents. 05-24-2022
SO MIN 2 -2 Grand Canyon National Park failed to provide photographic evidence that all storage tanks onsite have a #16 mesh screen on the air vents. 05-24-2022
FW MIN Grand Canyon National Park failed to provide security fencing around the three (3) storage tanks (5,000 gallons) at Phantom Ranch, storage tank 005 (10,000 gallons) at Hermit?s Rest, and the storage tank (10,000 gallons) at Yaki Point. 05-24-2022
FW MIN Grand Canyon National Park?s storage tank 005 (10,000 gallons) at Hermit?s Rest and storage tank (10,000 gallons) at Yaki Point did not have overflow pipes. 05-24-2022
FW MIN Grand Canyon National Park failed to provide photographic evidence that all storage tanks onsite have NSF approved gaskets on the hatch lids. 05-24-2022
SM REC Grand Canyon National Park failed to calibrate the continuous monitor for 4-logrithmic inactivation of viruses at least once every five days. 05-24-2022
FW REC Grand Canyon National Park?s west black polyethylene storage tank (5,000 gallons) at Phantom Ranch was leaking from the bottom of the tank. 05-24-2022
FW MIN The chlorine analyzers located at Roaring Springs and Desert View did not have an air gap from the floor drain, creating a potential cross connection. 05-24-2022
TR SIG Grand Canyon National Park failed to maintain the State-determined disinfectant concentration of 0.65mg/L (according to the September 20, 2021 approval letter) every day that water from the ground water source is served to the public. Grand Canyon National Park failed to conduct a grab sampling every four hours until the continuous monitoring equipment was returned to service. The 4- logarithmic continuous analyzer has experienced intermittent downtime since start up in February 2022. 05-24-2022
DS SIG Grand Canyon National Park failed to test annually and maintain record of 182, 150, and 189 backflow prevention assemblies respectively in 2019, 2020 and 2021. 05-24-2022
FW MIN Grand Canyon National Park failed to remove vegetation from around storage tank 001A (1M gallons) on the North Rim. 05-24-2022