HAULED WATER Gary Carlson Municipal Systems EPA Region 8 Hauled Water Public Water System: a system for the provision to the public of piped water for human consumption
- at least 15 service connections OR regularly serves an average of at least 25 individuals daily at least 60 days out of the year Hauled Water Public Water System: - includes any collection, treatment, storage, and distribution facilities under the control of the operator of such
system and used primarily in connection with such system Hauled Water Non-transient non-community water system - a public water system that is not a community water system and that regularly serves at least 25 of the same persons over 6 months of the year
Hauled Water Transient non-community water system - a non-community water system that does not regularly serve at least 25 of the same persons over six months of the year Hauled Water
40 CFR 141.3 Coverage (Section 1411, 1974 SDWA) - This part shall apply to each public water system, unless the public water system meets all of the following conditions: (a) Consists only of distribution and storage facilities (and does not have any collection and treatment facilities);
Hauled Water 40 CFR 141.3 (continued) (b) Obtains all of its water from, but is not owned or operated by, a public water system to which such regulations apply; (c) Does not sell water to any person; and (d) Is not a carrier which conveys passengers in interstate commerce.
Hauled Water Water from a ground water source and system is a TNCWS: - bacteriological monitoring required quarterly for each month system is in operation - number of samples is populationbased Hauled Water Water from a surface water source
and system is a TNCWS: - bacteriological monitoring required monthly with residual chlorine - number of samples is populationbased Hauled Water Highly recommended that hauled water is sampled and analyzed for bacteriological contamination at least monthly
- regardless of whether ground water or surface water source is used Hauled Water Other monitoring and reporting required for TNCWS: - Nitrate: 1 sample / year - Nitrite: 1 initial sample ( if < 50% of MCL, monitor at regulators
Sun Hauled Water Maintain daily chlorine residual at TNCWSs, whether hauled water is from surface water or groundwater source Equation for mixing Sodium Hypochlorite for disinfection ( ) chlorine residual ppm ( ) gal water = ( ( ) Na hypochlorite (e.g., 5.25%) (7494)
100 ) oz Hauled Water Tank used for hauling water should not be used for other purposes - Sanitary precautions must be taken at all times for tank used to haul water - Disinfect the tank used for hauling at
50 ppm chlorine Hauled Water Cross-connection considerations at hauled water filling site: - air gap - or backflow prevention device Hauled Water Sodium Hypocholorite (common bleach)
- clear, greenish-yellow liquid chlorine solution - contains 5.25% available chlorine, which is equivalent to 0.42 lb/gal Commercial bleaches contain 9% to 15% available chlorine Hauled Water Available chlorine in various strength bleach
solutions: Percent Available Available Chlorine Chlorine (lb/gal) 5.25 0.42 10 0.833 12.5 1.04
15 1.25 Hauled Water Sodium Hypochlorite is quite corrosive, store separately from equipment susceptible to corrosion damage Unlike Calcium Hypochlorite (powder form of hypochlorite with 65% to 70% concentration), there is no fire hazard connected with Sodium Hypochlorite
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