# Presentation: 463013

## 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 population-		based

## Hauled Water

**Water from a surface water source and system is a TNCWS:**
- 		-  bacteriological monitoring required 	monthly with residual chlorine
- 		-  number of samples is population-		based

## 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 regulator’s   		   discretion)
- 		-  public notification

## Add Chlorine

## Hauled Water

- Maintain daily chlorine residual at TNCWS’s, whether hauled water is from surface water or groundwater source
- Equation for mixing Sodium Hypochlorite for disinfection
- _(   ) chlorine residual ppm (   ) gal water_ =  (    ) oz
- (    ) Na hypochlorite  (e.g., _5.25_%)  (7494)
- 					    100

## 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