15-18-4 Restrictions During Town Declared Potable Water Shortages.
To determine the need to impose restrictions, the following procedures shall be implemented during potential Town declared potable water shortage conditions:
A. During a period of Town declared potable water shortage, the Water Utility Director, or a designated representative, shall project the supply and demand for water on a daily basis and shall advise the Town Manager on the extent of the use reduction required through the implementation and/or termination of a particular water conservation water restriction in order for the Water Utility to prudently plan for and supply water.
B. The Town Manager, upon the recommendation of the Water Utility Director, or a designated representative, is hereby authorized to declare a water conservation water restriction in conformity with and based upon the resource status levels set forth herein.
C. Safe production capability is defined as ninety percent (90%) of the total available water system capacity (calculated over a twenty-four (24) hour period), based upon distribution components, storage reserves, and weather conditions.
D. Such declaration may designate the entire area served by the Oro Valley Water Utility, or a portion or portions of the service area as affected, in the event the shortage is not system-wide.
E. Priority for potable water demand shall be designated as follows:
Highest Priority--Residential indoor domestic use and fire protection.
Second Highest Priority--Commercial/institutional/industrial uses.
Third Highest Priority--Public and private landscape irrigation sites, including golf courses, athletic fields and parks.
Lowest Priority--Other uses such as main flushing, street cleaning, filling swimming pools, decorative facilities.
Note: Per Arizona Administrative Code Title 18; Chapter 5; Note 1. Only a certified operator can make a decision about process control or system integrity regarding water quality or water quantity that affects public health; however, an administrator who is not a certified operator can make a planning decision regarding water quality or water quantity as long as the decision is not a direct operational process control or system integrity decision that affects public health. A certified operator will report supply conditions to the Water Utility Director, or a designated representative.
F. The following resource status levels are hereby prescribed:
1. Resource Status Level I: Periods when water demand is equal to safe production capability.
2. Resource Status Level II: Periods when water demand is greater than safe production capability for three (3) consecutive days.
3. Resource Status Level III: Periods when water demand is greater than safe production capability for two (2) consecutive weeks.
4. Resource Status Level IV: Periods when water demand exceeds total production capability.
G. The following water conservation levels shall govern the use of water by customers of the Oro Valley Water Utility, as prescribed below:
1. Water Conservation Level I: Voluntary Water Reductions. Water conservation Level I shall be imposed when water demand is classified as resource status Level I. Water users shall be requested to voluntarily reduce water used for irrigation, vehicle and pavement washing, construction and other water consuming activities. Irrigation is defined as the application of water to residential lawns, landscaping, commercial and industrial turf areas (including golf courses), parks, and medians.
2. Water Conservation Level II: Water Restrictions. Water conservation Level II shall be imposed when water demand is classified as resource status Level II. The following water uses shall be restricted or prohibited. No person shall:
a. Wash vehicles unless a bucket and hose with a positive cutoff nozzle is used. No restrictions shall apply to commercial car washes.
b. Wash paved areas as drives, sidewalks, or tennis courts; except reasons of health or safety.
c. Continue normal irrigation practices. Potable water supply for irrigation of golf courses and large turf areas shall be reduced by ten percent (10%). Further reductions in irrigation use along with time restrictions may be imposed. Operations personnel shall recommend appropriate actions to balance the system to the Water Utility Director. No restrictions shall apply if treated effluent/reclaimed water is used.
d. Use ornamental or public fountains and outdoor misting systems.
e. Use water from a fire hydrant from 6:00 a.m. to 10:00 a.m. for construction water unless provided written approval of the Water Utility Director and Town Fire Marshall; and except for such use associated with firefighting activities.
3. Water Conservation Level III: Water Restrictions. Water conservation Level III shall be imposed when water demand is classified as resource status Level III. In addition to the restrictions set forth in Section 15-18-4(F)(2), the following water uses are further restricted or prohibited. No person shall:
a. Fill or refill swimming pools, spas or wading pools unless for public health, safety or welfare.
b. Potable water supply for irrigation golf courses and large turf areas shall be reduced by up to an additional fifty percent (50%). Further reductions in irrigation use along with time restrictions may be imposed. No restrictions shall apply if treated effluent/reclaimed water is used.
c. Wash vehicles, paved areas, or use fire hydrants on a nonemergency basis without written approval of the Water Utility Director and the Town Fire Marshall. No restrictions shall apply to vehicles that must be washed for public health, safety or welfare, or to commercial car washes.
d. Irrigate outdoors other than between the hours of 6:00 p.m. to 10:00 p.m. and 4:00 a.m. to 8:00 a.m. on Monday and Thursday for even-numbered street addresses and for odd-numbered street addresses and all others at these same times on Tuesday and Friday. No restrictions shall apply if treated effluent/reclaimed water is used.
4. Water Conservation Level IV: Water Restrictions. Water conservation Level IV shall be imposed when water demand is classified as resource status Level IV. The following water users shall be restricted or prohibited. No person shall:
a. Do any of the acts prescribed in Section 15-18-4(F)(2) to (3).
b. Use any potable water for irrigation.
c. Use fire hydrants, wash pavements, fill or refill swimming pools, spas, outdoor misting systems or fountains unless for public health, safety or welfare.
d. Use potable water for dust control on public or private streets or capital improvement projects. Includes all construction water.
e. Use potable water in violation of any other restriction deemed necessary by the Mayor and Town Council for the purpose of protecting the health and welfare of the citizens of the Town of Oro Valley.
f. No restrictions shall apply if treated effluent/reclaimed water is used.
Failure to comply with water conservation Levels II through IV during a declared potable water shortage may result in penalties as described in Section 15-18-5(B). ((O)21-09, 09/08/2021; (O)03-07, 03/05/2003)