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Backflow Testing in Massachusetts
Backflow Testing across Massachusetts: the 621 ZIP codes and 452 cities we route calls in, and who licenses plumbers in the state.
Free to homeowners in Massachusetts — the contractor pays us for the introduction, you never do.
Who has to test
Our backflow testing coverage in Massachusetts runs to 621 ZIP codes in 452 cities. In a state that mixes large systems with small ones, a testing duty that is routine on one side of a county line can be unknown on the other, and the deadline a premises is held to is whichever its own water supplier sets.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route backflow testing calls in 621 ZIP codes across 452 Massachusetts cities, in 12 counties.
What this site is
CrossConnect is a referral service, not a contractor. We connect property owners and managers with independent contractors. Backflow assembly testing is normally restricted to testers holding a specific certification and using calibrated equipment, and the report usually has to reach your water purveyor — ask to see the certification and ask who files the report. We carry out no testing, we certify nobody, we do not set prices, and we never charge callers anything. Nothing here selects a device for any installation or states that any assembly is passing.Checking a credential in Massachusetts
Massachusetts licenses are issued by the Massachusetts Board of State Examiners of Plumbers and Gas Fitters, which publishes a public search you can use before work begins.
Every Massachusetts county we cover
- Barnstable County 49 ZIP codes
Buzzards Bay, Centerville, Falmouth, North Falmouth, Barnstable, Brewster, Cataumet, Chatham, Cotuit, Cummaquid, Dennis, Dennis Port, East Dennis, East Falmouth and 31 more - Berkshire County 2 ZIP codes
East Otis, Otis - Bristol County 41 ZIP codes
New Bedford, Fall River, North Attleboro, North Easton, Somerset, Taunton, Acushnet, Assonet, Attleboro, Attleboro Falls, Berkley, Dighton, East Freetown, East Taunton and 14 more - Essex County 55 ZIP codes
Lynn, Andover, Haverhill, Lawrence, Gloucester, Peabody, Salem, Amesbury, Beverly, Boxford, Byfield, Danvers, Essex, Georgetown and 23 more - Franklin County 20 ZIP codes
Ashfield, Buckland, Conway, Deerfield, Erving, Gill, Greenfield, Lake Pleasant, Leverett, Millers Falls, Montague, New Salem, Shelburne Falls, Shutesbury and 6 more - Hampden County 53 ZIP codes
Springfield, Chicopee, Holyoke, Longmeadow, West Springfield, Westfield, Agawam, Blandford, Bondsville, Brimfield, Chester, East Longmeadow, Feeding Hills, Granville and 13 more - Hampshire County 28 ZIP codes
Amherst, Northampton, Belchertown, Chesterfield, Cummington, Easthampton, Florence, Goshen, Granby, Hadley, Hatfield, Haydenville, Huntington, Leeds and 10 more - Middlesex County 100 ZIP codes
Cambridge, Framingham, Lowell, Waltham, Woburn, Groton, Somerville, Watertown, Acton, Arlington, Billerica, Burlington, Lexington, Medford and 54 more - Norfolk County 42 ZIP codes
Quincy, Braintree, Brookline, Dedham, Avon, Babson Park, Bellingham, Canton, Cohasset, Dover, East Walpole, East Weymouth, Foxboro, Franklin and 22 more - Plymouth County 47 ZIP codes
Brockton, Middleboro, Plymouth, Bridgewater, Duxbury, Hanover, Hingham, Lakeville, Abington, Brant Rock, Carver, East Bridgewater, East Wareham, Halifax and 20 more - Suffolk County 54 ZIP codes
Boston, Dorchester, East Boston, Allston, Brighton, Charlestown, Chelsea, Dorchester Center, Hyde Park, Jamaica Plain, Mattapan, Revere, Roslindale, Roxbury and 4 more - Worcester County 89 ZIP codes
Worcester, Shrewsbury, Westminster, Ashburnham, Auburn, Barre, Berlin, Blackstone, Bolton, Boylston, Brookfield, Charlton, Charlton City, Cherry Valley and 58 more
What that coverage looks like
The 12 counties in our Massachusetts footprint are served by many separate water suppliers, and each one decides which premises must test and how often. Middlesex County, with 100 covered ZIP codes, is the largest single block of them; Boston alone holds 34.
How a backflow testing job goes
A backflow test is a scheduled job that ends in a document. The assembly is isolated, the differential across it is measured, the result is written down, and the report goes to whoever requires it. A failed test means a repair or a rebuild and then a re-test; it does not mean the premises closes that day.
What the call asks about backflow testing
- What kind of premises it is and what is connected to the supply — irrigation, a boiler, a fire line, a commercial kitchen.
- Who is asking for the test: a water supplier, a health department, or a landlord.
- Whether there is an existing assembly with a serial number on it, and when it was last tested.
Every Massachusetts city we route in
195 cities, ordered by the share of buildings with twenty or more units. Containment assemblies are required building by building, and that is where the buildings are. Each page carries that city’s own numbers and the ZIP codes we route there.
- Boston 54%
- Allston 39%
- Cambridge 36%
- Brighton 36%
- Brookline 31%
- Charlestown 31%
- Quincy 29%
- Chelsea 28%
- Malden 27%
- Chestnut Hill 26%
- Roxbury Crossing 23%
- Revere 23%
- Watertown 22%
- Medford 21%
- South Weymouth 21%
- Stoneham 21%
- Jamaica Plain 20%
- Roxbury 19%
- Framingham 19%
- North Weymouth 18%
- Needham Heights 18%
- Peabody 18%
- East Boston 18%
- Weymouth 18%
- Lowell 18%
- Lynn 18%
- Amherst 17%
- North Billerica 17%
- Woburn 17%
- Westborough 17%
- Melrose 17%
- Westwood 17%
- Salem 17%
- Burlington 17%
- Hingham 17%
- Winthrop 17%
- Somerville 16%
- Mattapan 16%
- Lawrence 16%
- Natick 15%
- Hyannis 15%
- Northampton 14%
- Marlborough 14%
- Beverly 14%
- Danvers 14%
- Worcester 14%
- Swampscott 14%
- Arlington 14%
- South Boston 14%
- Gardner 14%
- East Weymouth 13%
- Dedham 13%
- Waltham 13%
- Holyoke 13%
- West Springfield 13%
- Everett 12%
- Hudson 12%
- Springfield 12%
- Canton 12%
- Concord 12%
- Wakefield 12%
- Reading 12%
- Billerica 12%
- Leominster 12%
- Amesbury 12%
- Norwood 11%
- North Andover 11%
- Shrewsbury 11%
- Andover 11%
- Chelmsford 11%
- Braintree 11%
- Dorchester 11%
- Falmouth 11%
- Haverhill 11%
- Fitchburg 11%
- West Roxbury 10%
- Franklin 10%
- Randolph 10%
- Clinton 10%
- Tewksbury 10%
- Acton 10%
- Plainville 10%
- Fall River 10%
- Bedford 10%
- South Easton 10%
- Hyde Park 9%
- Brockton 9%
- Wellesley 9%
- Agawam 9%
- Lynnfield 9%
- Mansfield 9%
- Winchester 9%
- Chicopee 8%
- Dracut 8%
- Ashland 8%
- Salisbury 8%
- Dorchester Center 8%
- Saugus 8%
- North Reading 8%
- Stoughton 8%
- Ayer 8%
- New Bedford 8%
- Newburyport 8%
- Bridgewater 8%
- Duxbury 8%
- Lunenburg 8%
- Hopkinton 8%
- Lexington 7%
- Belmont 7%
- Maynard 7%
- Needham 7%
- Hanover 7%
- Newton 7%
- Attleboro 7%
- Hull 7%
- Holliston 7%
- Westford 7%
- East Longmeadow 7%
- Newtonville 7%
- North Dartmouth 7%
- Northborough 7%
- Greenfield 7%
- Westfield 7%
- North Attleboro 7%
- North Chelmsford 6%
- Methuen 6%
- Feeding Hills 6%
- Whitinsville 6%
- Plymouth 6%
- Middleton 6%
- Foxboro 6%
- Roslindale 6%
- Newton Center 6%
- Wellesley Hills 6%
- Abington 5%
- South Hadley 5%
- Walpole 5%
- Gloucester 5%
- Fairhaven 5%
- Auburn 5%
- Sharon 5%
- Milford 5%
- Ipswich 5%
- Norton 5%
- Wrentham 5%
- Southbridge 5%
- Holbrook 5%
- South Yarmouth 5%
- Groton 5%
- Whitman 5%
- Milton 5%
- Longmeadow 5%
- West Yarmouth 5%
- Bellingham 5%
- Littleton 5%
- Rockland 5%
- Raynham 5%
- Middleboro 5%
- Pembroke 4%
- Taunton 4%
- Tyngsboro 4%
- Medway 4%
- Seekonk 4%
- Buzzards Bay 4%
- Millis 4%
- Sandwich 4%
- North Easton 4%
- Weston 4%
- Charlton 4%
- Cohasset 4%
- Southwick 4%
- Orleans 4%
- Lakeville 4%
- Wilbraham 3%
- Wilmington 3%
- Marshfield 3%
- Palmer 3%
- Webster 3%
- Ludlow 3%
- Rutland 3%
- Sudbury 3%
- Millbury 3%
- Brewster 3%
- Easthampton 3%
- Georgetown 3%
- Pepperell 3%
- Wayland 3%
- Scituate 3%
- Yarmouth Port 3%
- Southborough 2%
- Westport 2%
- Wareham 2%
- Mashpee 2%
- Kingston 2%
- Douglas 2%
Before you call
A test is a scheduled job with a report at the end of it, not a repair. What the report has to show, and who it goes to, are on the pages above.
