{"schema_version":"1.2","pwsid":"WI1571284","system_name":"SPRING GREEN ESTATES NORTH","city":"MARSHFIELD","state":"WI","population_served":32,"source_type":"GW","summary":"SPRING GREEN ESTATES NORTH serves approximately 32 people in MARSHFIELD, Wisconsin. Based on contaminant analyses from EPA ECHO, 0 contaminants have been measured above federal EPA standards (MCL) and 1 exceeds health-based guidelines. The most significant finding is Lead (90th Percentile) at 0.0013155 mg/L, which is 6.6x the health guideline. Data is drawn from source-level compliance monitoring and covers 2025 through 2025. Results reflect conditions at the point of collection (wells, treatment plants), not necessarily at the tap.","data_period":{"start":"2025-06-30","end":"2025-06-30"},"contaminants_tested":1,"contaminants_detected":1,"exceedances":0,"guideline_exceedances":1,"contaminants":[{"name":"Lead (90th Percentile)","code":"PB90","cas_number":"7439-92-1","group":"lead_copper","section":"guideline_exceedance","measured_value":0.001316,"unit":"mg/L","sample_date":"2025-06-30","source":"EPA ECHO","source_scope":"federal_program","health_guideline_value":0.0002,"health_guideline_source":"OEHHA PHG","epa_mcl_value":null,"status":"exceeds_guideline","detection_limit":null}],"sources":[{"name":"EPA ECHO","url":"https://echo.epa.gov/"}],"pfas_combined_display":null,"well_counts":{"active":1,"retired":0,"facilities_synced_at":"2026-04-11T13:48:07.246Z"},"historical_wells":[],"has_only_historical_data":false,"pfas_hazard_index":null,"tthm_lraa":[],"haa5_lraa":[]}