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Virginia Administrative Code (Last Updated: January 10, 2017) |
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Title 12. Health |
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Agency 5. Department of Health |
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Chapter 590. Waterworks Regulations |
Section 1100. Distribution storage
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The applicable design standards of 12VAC5-590-1080 shall be followed for distribution storage.
A. The maximum variation between high and low water levels in finished water storage structures which float on a distribution system should not exceed 30 feet. Large diameter, shallow-depth reservoirs are preferable over small diameter, deep-depth reservoirs.
B. Adequate controls shall be provided to maintain levels in distribution system storage structures at all times.
C. Pressure tanks. (Also see 12VAC5-590-1090 E.)
1. A telemetering system and recording equipment should be provided, to a location where qualified personnel are available at all times, for the transmission and recording of storage levels in the distribution system.
2. Altitude valves or equivalent controls may be required for subsequent structures on the system.
3. Overflow, low level, and pump malfunction warnings or alarms should be transmitted to a location where qualified personnel are available for surveillance on a 24-hour basis.
Historical Notes
Derived from VR355-18-011.03 § 3.47, eff. August 1, 1991.