{"schema_version":"1.2","pwsid":"WI1130247","system_name":"MT HOREB WATERWORKS","city":"MOUNT HOREB","state":"WI","population_served":7756,"source_type":"GW","summary":"MT HOREB WATERWORKS serves approximately 7,756 people in MOUNT HOREB, Wisconsin. Based on contaminant analyses from DNR, WQP, EPA ECHO, EPA UCMR5, 0 contaminants have been measured above federal EPA standards (MCL) and 2 exceed health-based guidelines. The most significant finding is Lead (90th Percentile) at 0.003 mg/L, which is 15x the health guideline. Data is drawn from source-level compliance monitoring and covers 2014 through 2026. Results reflect conditions at the point of collection (wells, treatment plants), not necessarily at the tap.","data_period":{"start":"2014-07-09","end":"2026-09-22"},"contaminants_tested":138,"contaminants_detected":26,"exceedances":0,"guideline_exceedances":2,"contaminants":[{"name":"Chlorine (free)","code":"0700","cas_number":null,"group":"disinfectants","section":"other_detected","measured_value":0.85,"unit":"mg/L","sample_date":"2026-09-22","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":"Fluoride (natural)","code":"FLUORIDE","cas_number":"16984-48-8","group":"inorganics","section":"other_detected","measured_value":0.64,"unit":"mg/L","sample_date":"2026-09-15","source":"DNR","source_scope":"source_monitoring","health_guideline_value":4,"health_guideline_source":"EPA 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Not a current MCL."},"well_counts":{"active":3,"retired":1,"facilities_synced_at":"2026-10-15T05:00:54.057Z"},"historical_wells":[],"has_only_historical_data":false,"pfas_hazard_index":{"value":0.3303,"compounds_used":["PFHXS","PFBS"],"is_partial":true,"threshold":1,"components":[{"code":"PFHXS","value_ng_l":3.3,"hbwc_ng_l":10,"ratio":0.33},{"code":"PFBS","value_ng_l":0.506,"hbwc_ng_l":2000,"ratio":0.0003}]},"tthm_lraa":[{"monitoring_point":"system_wide","value":3.98,"unit":"ug/L","quarters_used":["2023Q3","2024Q3","2025Q3","2026Q3"],"sample_count":4,"mcl":80,"exceeds_mcl":false}],"haa5_lraa":[]}