{"schema_version":"1.2","pwsid":"WI4360364","system_name":"MANITOWOC WATERWORKS","city":"MANITOWOC","state":"WI","population_served":34500,"source_type":"SW","summary":"MANITOWOC WATERWORKS serves approximately 34,500 people in MANITOWOC, Wisconsin. Based on contaminant analyses from DNR, EPA ECHO, EPA UCMR5, 0 contaminants have been measured above federal EPA standards (MCL) and 4 exceed health-based guidelines. The most significant finding is Lead (90th Percentile) at 0.0077 mg/L, which is 38.5x the health guideline. 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":"2026-03-24"},"contaminants_tested":143,"contaminants_detected":29,"exceedances":0,"guideline_exceedances":4,"contaminants":[{"name":"Chlorine (free)","code":"0700","cas_number":null,"group":"disinfectants","section":"other_detected","measured_value":1.34,"unit":"mg/L","sample_date":"2026-03-24","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":"Gross Alpha Radiation (excluding Radon and 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Not a current MCL."},"well_counts":{"active":2,"retired":1,"facilities_synced_at":"2026-04-11T13:48:07.246Z"},"historical_wells":[],"has_only_historical_data":false,"pfas_hazard_index":{"value":0.0492,"compounds_used":["PFHXS","PFBS"],"is_partial":true,"threshold":1,"components":[{"code":"PFHXS","value_ng_l":0.49,"hbwc_ng_l":10,"ratio":0.049},{"code":"PFBS","value_ng_l":0.34,"hbwc_ng_l":2000,"ratio":0.0002}]},"tthm_lraa":[{"monitoring_point":"system_wide","value":37.72,"unit":"ug/L","quarters_used":["2025Q2","2025Q3","2025Q4","2026Q1"],"sample_count":8,"mcl":80,"exceeds_mcl":false}],"haa5_lraa":[{"monitoring_point":"system_wide","value":19.97,"unit":"ug/L","quarters_used":["2025Q2","2025Q3","2025Q4","2026Q1"],"sample_count":8,"mcl":60,"exceeds_mcl":false}]}