Water Quality in Watertown, WI (53549)
EPA violation data for public water systems serving ZIP code 53549.
No Health-Based Violations
None of the 45 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are3 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 43% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
9,873
Population
45
Water Systems
3
Violations (5yr)
0
Health-Based
Location
Loading map...
Water Systems Serving This Area (45)
Watertown Waterworks
All resolvedJefferson Speedway
Wayside Tavern
Bark River Campground - Main Building System
Sullivan Elementary School
Rox Sports Bar
St Coletta Of Wisconsin
Hwy 18 Brewing Co
Lous Riverview
St Lawrence Cath Parish Center
Bark River Campground - East Area
Jefferson Mid-State Auto Auction
Hwy 18 Outdoor Theatre
St Coletta School Alverno Cottages
Edgewater Supper Club
Maxmillian House
Capns Corner
Rock River Co Park
Rock Lake Co Park - Lower
Jaeckel Brothers Flowing Well
Jefferson Co Humane Society
Bark River Campground - Hill Well
Korth Co Park Hand Pump
Welcome Travelers Co Park
Bicen Park - New Small Dog Area - Well 1
Vfw Private Club (Post 3589)
Rome Pond Co Park
Mccoy Park
Bicen Park - Old Large Dog Area - Well 3
Bicen Park - New Large Dog Area - Well 2
Pohlmann Co Park
Korth Co Park Main Shelter
Garman Nature Preserve
Rock River Access Cappies Landing
Carlin Weld Co Park
Cold Spring Creamery Co Park
Novelty Bake Shoppe
Dorothy Carnes Co Park East
Dorothy Carnes Co Park
Rock Lake Co Park - Upper
Kanow Co Park
All resolvedContinental Grain Co - Office & Prod Bar
Mason Farm/Elk (Dorothy Carnes Co Park)
Ripley Greens Condominium Assoc
Aztalan Museum
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Sep 2025
How Does This Compare?
Watertown (53549) has more violations than 43% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 3, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.