tected by development of appropriate cri- 

 teria for each individual case. 



Recreation 



summary 

 of recommendations 



Aestlietics 



A. General Requirements 



I. All surface waters should be capable of 

 supporting life forms of aesthetic value. 

 II. Surface waters should be free of sub- 

 stances attributable to discharges or wastes 

 as follows: 



(a) Materials that will settle to form ob- 

 jectionable deposits. 



(b) Floating debris, oil, scum, and other 

 matter. 



(c) Substances producing objectionable 

 color, odor, taste, or turbidity. 



(d) Materials, including radionuclides, in 

 concentrations or combinations 

 which are toxic or which produce 

 undesirable physiological responses 

 in human, fish, and other animal life 

 and plants. 



(e) Substances and conditions or combi- 

 nations thereof in concentrations 

 which produce undesirable aquatic 

 life. 



B. Desirable Additional Requirements 



I. The positive aesthetic values of water 

 should be attained through continuous en- 

 hancement of water quality. 

 II. The aesthetic values of unique or outstand- 

 ing waters should be recognized and pro- 



A. General Recreational Use of Surface Waters 



I. Surface waters, with specific and limited 

 exceptions, should be suitable for human 

 use in recreation activities not involving 

 significant risks of ingestion without refer- 

 ence to oflflcial designation of recreation 

 as a water use. For this purpose, in addi- 

 tion to aesthetic criteria, surface waters 

 should be maintained in a condition to 

 minimize potential contamination by uti- 

 lizing fecal coliform criteria for monitor- 

 ing. In the absence of local epidemiologi- 

 cal experience, the Subcommittee sug- 

 gests an average not to exceed 2,000 

 fecal coliforms per 100 ml and a maxi- 

 mum of 4,000 per 100 ml, except in 

 specified mixing zones adjacent to out- 

 falls. 

 II. Surface waters, with specific and limited 

 exceptions, should be of such quaUty as 

 to provide for the enjoyment of recrea- 

 tion activities based upon the utilization 

 of fishes, waterfowl, and other forms of 

 life without reference to official designa- 

 tion of use. The Subcommittee recom- 

 mends by reference criteria developed by 

 the National Technical Advisory Sub- 

 committee on Fish, Other Aquatic Life, 

 and Wildlife for guidance relative to 

 various species and waters. 

 III. Species available for harvest by recreation 

 users should be fit for human consump- 

 tion. In areas where taking of mollusks is 

 a recreational activity, the criteria shall be 

 guided by the U.S. Public Health Service 

 manual, "Sanitation of Shellfish Growing 

 Areas," 1965 revision. 



B. Enhancement of Recreation Value of Waters 



Designated for Recreation Uses Other Than 



Primary Contact Recreation 

 I. In waters designated for recreation use 

 other than primary contact recreation, the 

 fecal coliform content, as determined by 

 either multiple-tube fermentation or mem- 

 brane filter techniques, should not exceed 

 a log mean of 1,000/100 ml, nor equal or 

 exceed 2,000/100 ml in more than 10% 

 of the samples. 

 II. In waters designated for recreation use, 



