1. (1) Minimum treatment for a ground water source shall be disinfection by chlorination or other disinfection methods acceptable to the permit issuing official unless a waiver for disinfection has been issued based upon a satisfactory history of microbiological water quality and all sources of the water supply are properly located, constructed and effectively protected and maintained.

2. (2) Minimum treatment for surface water sources or ground water sources directly influenced by surface water shall be filtration and disinfection techniques, approved by the permit issuing official, capable of 99.9 percent removal and/or inactivation of viruses and giardia lamblia cysts.

   (b) Maximum contaminant levels (MCL)

   Contaminant	MCL
   Total coliform	Any positive sample
   Escherichia coli (E. coli)	Any positive sample
   Nitrate	10 (as Nitrogen) mg/L
   Nitrite	1 (as Nitrogen) mg/L
   Total nitrate and nitrite	10 (as Nitrogen) mg/L

   (c) Monitoring requirements.

   Samples shall be collected from the water system(s) for analysis as follows:

3. (1) At least one sample collected for microbiological analysis from each system prior to opening for the operating season and at least one additional sample collected from each system during the operating season. For those campgrounds operating more than 90 days in a calendar year microbiological samples shall be collected for each quarter the campground is in operation.
4. (2) A sample shall be collected for nitrate and nitrite analysis for new water sources.

5. (3) Additional monitoring may be required when determined by the permit-issuing official to be necessary to evaluate water quality.

   (d) Submission of plans; prior approval.

   A plan for proposed new or modified potable water supply systems shall be submitted to the permit-issuing official at least 30 days prior to beginning construction. No construction of new or modified potable water supply systems shall commence until plans and specifications have been submitted to and approved by the permit-issuing official. Construction shall be in accordance with the approved plans.

   (e) Minimum standards.

6. (1) Potable water shall be adequate in quantity and quality and shall be readily available to occupants of the campground. Only potable water shall be easily accessible. An adequate supply shall mean at least 55 gallons per day per campsite which includes water use for toilets, hand washing, showers and individual campsite food preparation and clean-up. Additional available capacity for food services, bathing facilities, laundry and demand created by day use of these facilities shall be provided.

7. (2) Structures available for overnight occupancy other than those meeting the definition of a camping unit, shall be supplied with at least 150 gallons of water per unit per day.

   (f) Source protection.

   All potable water sources and distribution systems shall be designed, located, constructed and maintained to provide protection against contamination or pollution. All pumps, piping fixtures and appurtenances shall be adequately installed and maintained to protect against contamination of any water source.

   (g) Connections prohibited.

   There shall be no physical connection between the potable water supply and any nonpotable water supply. Any fixture, installation or equipment which is subject to back-siphonage shall be adequately installed and maintained to protect against contamination of the water source(s).

8. (h) A minimum pressure of 20 pounds per square inch, at peak demand, shall be maintained in all parts of the campground distribution system.

   (i) Report on water treatment.

   When a water treatment process is required to maintain adequate water quality, accurate and complete reports on the operation of the treatment system shall be maintained daily and submitted at least monthly, within 10 days of the end of each month, during periods of operation to the permit-issuing official on a form supplied for this purpose.

   (j) Interruptions, changes in sources or treatments.

   Any incident or condition which effects the quantity or quality of the on-site potable water supply shall be reported to the permit-issuing official within 24 hours of occurrence. There shall be no changes made to the source, or method of treatment of a potable water supply, either temporary or permanent, without first receiving approval from the permit-issuing official. An adequate supply of potable water must be provided and maintained during all times of operation.

9. (k) An adequate supply of potable water shall be provided within 250 feet of all campsites. One water spigot with a soakage pit or other disposal facilities shall be provided for each 10 campsites not provided with individual spigots on the campsites.
10. (l) A common drinking utensil shall not be provided. Drinking fountains shall be of adequate sanitary design and construction.

Every campground potable water supply meeting the definition of a public water system as defined in Subpart 5-1 of this Title shall, in addition to complying with subdivisions (d)-(l) of this section, comply with the applicable requirements of Subpart 5-1 of this Title. All other potable water supplies serving campgrounds not meeting the definition of a public water system shall comply with the following requirements:

(a) Treatment.