NATURE OF THE CASE/CAUSE OF ACTION: OVAL-ORIOLE WATER ASSOCIATION IS AN INCORPORATED NONPROFIT PUBLIC WATER SYSTEM W/195 SERVICE CONNECTIONS SERVING APPROX 800 TO 1000 PERSONS. THE SYSTEM USES SUR- FACE WATER SOURCES. THE SYSTEM HAS FAILED TO MONITOR THE DRINKING WATER & REPORT RESULTS TO EPA FOR TURBIDITY, RADIOACTIVE CONTAMINANTS, MICROBIOLOGICAL CONTAMINANTS & ORGANIC & INORGANIC CHEMICALS AS REQUIRED BY THE SDWA. DURING THE SEVEN MONTHS IN WHICH SAMPLING FOR MICROBIO- LOGICAL CONTAMINANTS WAS DONE, THE MAXIMUM CONTAMINANT LEVEL WAS EXCEEDED FOR FOUR MONTHS & THE REQUIRED CHECK SAMPLES WERE NOT TAKEN. ADDITIONALLY, THE SYSTEM HAS FAILED TO PROVIDE ITS CUSTOMERS W/NOTICE OF THE ABOVE VIOL'S AS REQUIRED BY SEC 1414(C)(1)(B) OF THE SDWA. AN ON-SITE SANITARY SURVEY WAS CONDUCTED BY EPA ON 5/16/79. TO DATE, AT LEAST 30 CONTACTS BY EPA W/OVAL- ORIOLE, BY LTR, TELEPHONE & IN PERSON, HAVE FAILED TO RE- SOLVE THE PROBLEM. THE COMMONWEALTH OF PA DOES NOT HAVE PRIMARY ENFORC- EMENT RESPONSIBIITY UNDER THE SDWA.