{"schema_version":"1.2","pwsid":"WI6090461","system_name":"NEW AUBURN WATERWORKS","city":"NEW AUBURN","state":"WI","population_served":549,"source_type":"GW","summary":"NEW AUBURN WATERWORKS serves approximately 549 people in NEW AUBURN, Wisconsin. Based on contaminant analyses from DNR, EPA ECHO, the most recent monitoring readings are within federal EPA standards (MCL), but this system has active MCL violations on record for 1 contaminant. 0 contaminants exceed health-based guidelines. Data is drawn from source-level compliance monitoring and covers 2017 through 2026. Results reflect conditions at the point of collection (wells, treatment plants), not necessarily at the tap.","data_period":{"start":"2017-09-30","end":"2026-09-28"},"contaminants_tested":47,"contaminants_detected":19,"exceedances":0,"guideline_exceedances":0,"contaminants":[{"name":"Chlorine (free)","code":"0700","cas_number":null,"group":"disinfectants","section":"other_detected","measured_value":0.34,"unit":"mg/L","sample_date":"2026-09-28","source":"DNR","source_scope":"source_monitoring","health_guideline_value":4,"health_guideline_source":"EPA MCLG","epa_mcl_value":4,"status":"below_limits","detection_limit":null},{"name":"Chlorine (total residual)","code":"0700_TOTAL","cas_number":null,"group":"disinfectants","section":"other_detected","measured_value":0.43,"unit":"mg/L","sample_date":"2026-09-28","source":"DNR","source_scope":"source_monitoring","health_guideline_value":4,"health_guideline_source":"EPA 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