Tapcensus

Pennsylvania

Montgomery County drinking water quality

167 active public water systems serve 1,273,934 people in Montgomery County. 65 are compliant, 102 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.

Active systems 167 38 community systems
People served 1.3M by public water systems
Systems with violations 102 61% of active systems, past 3 years
Serious violators 0 1 systems carry a health flag

Needs attention

Manufacturers Golf & CC PA1460841 · Non-Transient non-community system · Serves 100 2 rules violated in the past three years. Unresolved: Surface Water Treatment Rule.

Community water systems

38 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Aqua PA Main System
 822,600 6 0
North Penn Water Authority
 91,941 0 0
PA American Norristown
 88,885 1 0
North Wales Water Authority
 72,496 2 0
Pottstown Borough Water Auth
 36,000 3 0
Horsham Water&sewer Authority
 26,000 5 0
Ambler Boro Water Dept
 20,000 2 0
Aqua PA Hatboro
 12,901 1 0
Aqua PA Superior Main System
 11,400 1 0
Collegeville Trappe Joint Pwd
 8,470 1 0
PA American Audubon
 8,200 8 0
Telford Borough Authority
 7,700 1 0
Schwenksville Borough Auth
 5,200 5 0
Upper Hanover Water Authority
 4,600 4 1
Aqua PA Perkiomen Township
 3,600 0 0
E Greenville Boro Water Dept
 3,100 3 0
Red Hill Water Authority
 2,500 1 0
Village of Neshaminy Falls
 1,300 4 0
Parkhouse Nursing & Rehab Ctr
 1,200 3 0
Aqua PA Perkiomen Woods
 1,100 1 0
Aqua PA Upper Providence
 810 0 0
Frederick Living
 640 6 1
Perkiomen Crossing
 508 2 0
Aqua PA Superior Center Point
 500 2 1
Green Hill MHP
 323 0 0
Avante Apartments
 315 0 0
Awc Valley Forge Crossing MHP
 250 4 0
Hilltop Mobile Estates
 220 0 0
Yerkes Water Association
 165 2 0
Aqua PA Superior Ivy Ridge
 150 0 0
Spruce Court Apartments
 139 0 0
Oak Grove Park MHP
 130 3 0
Windhaven MHP
 112 0 0
Wooded Ridge Development
 90 0 0
Dock Woods Community
 72 1 0
Saint Luke Knolls
 50 0 0
Pleasant Run MHP
 32 4 0
Wec International
 25 1 0
Non-community systems (129: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Merck and CO INC
 8,550 2 0
Radisson Valley Forge Hotel
 3,500 1 0
Valley Forge Natl Park
 2,300 1 0
Hatfield Quality Meats INC
 1,850 0 0
Constellation Nuclear Pwr Plnt
 1,650 1 0
Upper Dublin High School
 1,473 4 0
Pottstown Hosp Tower Health
 1,425 0 0
Spring Mountain Adventures
 1,000 0 0
New Hanover Upper Fred E S
 850 3 0
Gilbertsville Elementary
 800 3 0
Marlborough Elementary School
 800 1 0
Jefferson Hospital Lansdale
 700 4 0
Camp Hart Musser Reservation
 600 0 0
Fort Washington Elem School
 532 0 0
Hickory Valley G C Snack Bar
 500 0 0
Salford Hills Elem School
 500 0 0
Horsham Clinic
 488 0 0
Biddle Air National Guard Base
 440 0 0
Camp Hope for Kids
 410 3 0
Indian Valley Country Club
 400 0 0
Limerick Diner
 400 2 1
Camp Green Lane
 350 1 0
Flourtown Swim Club
 350 1 0
Lehigh Valley Dairies Ntnc
 328 1 0
Camp Kweebec
 300 3 0
Final Results Fitness
 300 1 0
Lower Perkiomen Valley Park
 300 0 0
Martins Dam Club
 300 4 0
N Hanover Evangel Luth Church
 300 0 0
Perkiomenville Mennonite Churc
 300 2 0
Upper Dublin Sports Center
 300 3 0
Leidys INC
 260 0 0
Camp Laughing Waters Gssepa
 250 1 0
Skippack Recreational Assoc
 250 3 1
Fairways Bar and Grill
 200 1 0
Ringing Hill Fire Company
 200 0 0
Salford Mennonite Child Care
 200 1 0
Constellation Training Center
 175 0 0
Godshalls Quality Meats INC
 175 4 0
Union Jacks Old Congo Hotel
 175 0 0
Earl Bowl INC
 170 2 0
Sunset Hill Brewing CO
 150 1 0
Villa Caterina
 150 1 0
Wentzs United Church of Christ
 150 0 0
Camp Trinity
 145 3 0
Butter Valley Golf Port
 125 0 0
Sanatoga Swim Club
 125 3 1
EL Tequila Sports Bar & Grill
 105 0 0
Chiaros Green Lane
 100 1 0
Country Chefs Kitchen
 100 1 0
Evansburg State Park
 100 3 0
Fitzwater Station
 100 2 0
Green Lane Congregation
 100 0 0
Green Lane Fire CO
 100 0 0
Haines Historical Foundation
 100 1 0
Hillside Aquatic Club
 100 0 0
Little Zion Lutheran Church
 100 0 0
Lower Pottsgrove Sportman Assn
 100 0 0
Manufacturers Golf & CC
 100 2 1
Merrymead Farm
 100 2 0
ST Luke Lutheran Church
 100 0 0
ST Pauls Luth CH
 100 0 0
Sunoco of Green Lane
 100 1 0
Turkey Hill 260
 100 0 0
Turtle Creek Golf Club
 100 0 0
Upper Salford Vol Fire CO
 100 0 0
Wetlands Bar & Restaurant
 100 0 0
American Dream Cafe
 90 2 0
Miss Doreens Playmation Childc
 88 1 0
Bella Cucina
 85 2 0
2452 Quakertown RD
 80 1 0
Doc Watsons
 80 0 0
ST Lukes Lutheran Church
 80 0 0
Country Commons
 75 1 0
Dutch Cottage Tavern
 75 0 0
Rolling Turf Golf Course
 75 1 0
Taco Pizza
 75 2 2
Twin Ponds Golf Club
 75 1 0
Valley Cafe INC
 75 0 0
Helping Hands, Inc.
 70 4 0
Jamison Sumneytown Hotel INC
 70 0 0
Little Faces Learning Center
 65 3 0
Funky Bunny Cafe
 60 1 0
Ninos Pizzarama
 60 3 0
Powderbourne Sportsmans Club
 60 0 0
Frog Hollow Racquet Club
 57 2 0
Our Place
 55 0 0
Cook Green Lane LLC
 54 0 0
1483 North Charlotte Street
 50 2 0
Bay Pony Inn at Lederach
 50 1 0
Dolce Vita
 50 0 0
EL Guacamole
 50 1 0
Gravel Pike Inn
 50 0 0
Green Lane Park
 50 0 0
Market at Main
 50 2 0
New Hanover CC Gilbertsville
 50 4 0
NH Childcare Zieglerville
 50 3 0
Pennypacker Mills Historic Ste
 50 1 0
Philly B&m Steaks
 50 0 0
Shepherd of the Hills Church
 50 3 0
All 129 in the systems table
Inactive systems (511, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.