{"schema_version":"1.2","pwsid":"WI2301565","system_name":"52ND AVE WATER GROUP","city":"Kenosha","state":"WI","population_served":35,"source_type":"GW","summary":"52ND AVE WATER GROUP serves approximately 35 people in Kenosha, Wisconsin. Based on contaminant analyses from DNR, WQP, 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 0.000225 mg/L, which is 1.1x the health guideline. Data is drawn from source-level compliance monitoring and covers 2001 through 2026. Results reflect conditions at the point of collection (wells, treatment plants), not necessarily at the tap.","data_period":{"start":"2001-03-28","end":"2026-06-01"},"contaminants_tested":83,"contaminants_detected":10,"exceedances":0,"guideline_exceedances":1,"contaminants":[{"name":"Di(2-ethylhexyl) phthalate","code":"2046","cas_number":null,"group":"vocs","section":"other_detected","measured_value":4,"unit":"ug/L","sample_date":"2026-05-11","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0.008,"health_guideline_source":"WHO Guideline","epa_mcl_value":0.006,"status":"below_limits","detection_limit":null},{"name":"Pentachlorophenol","code":"2041","cas_number":null,"group":"vocs","section":"other_detected","measured_value":0.09,"unit":"ug/L","sample_date":"2024-09-24","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0.009,"health_guideline_source":"WHO Guideline","epa_mcl_value":0.001,"status":"below_limits","detection_limit":null},{"name":"Dichloromethane","code":"2931","cas_number":null,"group":"vocs","section":"other_detected","measured_value":1.1,"unit":"ug/L","sample_date":"2024-09-24","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0.004,"health_guideline_source":"OEHHA PHG","epa_mcl_value":0.005,"status":"below_limits","detection_limit":null},{"name":"Toluene","code":"2964","cas_number":null,"group":"other","section":"other_detected","measured_value":0.27,"unit":"ug/L","sample_date":"2024-09-24","source":"DNR","source_scope":"source_monitoring","health_guideline_value":null,"health_guideline_source":null,"epa_mcl_value":null,"status":"detected","detection_limit":null},{"name":"Chromium (total)","code":"CHROMIUM","cas_number":"7440-47-3","group":"inorganics","section":"other_detected","measured_value":0.34,"unit":"ug/L","sample_date":"2010-08-25","source":"WQP","source_scope":"regional_groundwater","health_guideline_value":0.1,"health_guideline_source":"EPA MCLG","epa_mcl_value":0.1,"status":"below_limits","detection_limit":null},{"name":"Arsenic","code":"ARSENIC","cas_number":"7440-38-2","group":"inorganics","section":"other_detected","measured_value":5.1,"unit":"ug/L","sample_date":"2023-08-08","source":"WQP","source_scope":"regional_groundwater","health_guideline_value":0.000004,"health_guideline_source":"OEHHA PHG","epa_mcl_value":0.01,"status":"exceeds_guideline","detection_limit":null},{"name":"Nickel","code":"1036","cas_number":null,"group":"inorganics","section":"other_detected","measured_value":0.0012,"unit":"mg/L","sample_date":"2024-09-25","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0.012,"health_guideline_source":"OEHHA PHG","epa_mcl_value":null,"status":"below_limits","detection_limit":null},{"name":"Barium","code":"BARIUM","cas_number":"7440-39-3","group":"inorganics","section":"other_detected","measured_value":0.013,"unit":"mg/L","sample_date":"2024-09-25","source":"DNR","source_scope":"source_monitoring","health_guideline_value":1,"health_guideline_source":"OEHHA PHG 2003 (hypertension endpoint)","epa_mcl_value":2,"status":"below_limits","detection_limit":null},{"name":"Fluoride (natural)","code":"FLUORIDE","cas_number":"16984-48-8","group":"inorganics","section":"other_detected","measured_value":0.87,"unit":"mg/L","sample_date":"2024-09-25","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":"Combined Radium (226+228)","code":"4010","cas_number":null,"group":"radionuclides","section":"other_detected","measured_value":1.03,"unit":"pCi/L","sample_date":"2021-09-29","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0,"health_guideline_source":"EPA MCLG","epa_mcl_value":5,"status":"below_limits","detection_limit":null},{"name":"Lead (90th Percentile)","code":"PB90","cas_number":"7439-92-1","group":"lead_copper","section":"guideline_exceedance","measured_value":0.000225,"unit":"mg/L","sample_date":"2024-09-30","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},{"name":"Copper (90th Percentile)","code":"COPPER","cas_number":"7440-50-8","group":"lead_copper","section":"other_detected","measured_value":2.4,"unit":"ug/L","sample_date":"2024-09-19","source":"DNR","source_scope":"source_monitoring","health_guideline_value":0.3,"health_guideline_source":"OEHHA PHG","epa_mcl_value":null,"status":"below_limits","detection_limit":null}],"sources":[{"name":"DNR","url":"https://apps.dnr.wi.gov/dwsportalpub"},{"name":"WQP","url":"https://www.waterqualitydata.us/"},{"name":"EPA ECHO","url":"https://echo.epa.gov/"}],"pfas_combined_display":null,"well_counts":{"active":3,"retired":0,"facilities_synced_at":"2026-10-12T00:17:03.546Z"},"historical_wells":[],"has_only_historical_data":false,"pfas_hazard_index":null,"tthm_lraa":[],"haa5_lraa":[]}