Morris County, New Jersey
Mount Arlington has 34 service connections still to identify before 2031.
Most of its inventory is resolved. The connections whose material was never recorded are the part that still costs money, because under the rule each one counts as lead until somebody proves otherwise.
What the law requires
P.L.2021 c.183 obliges every public community water system in New Jersey to inventory every service connection, notify the public about what it finds, and replace all lead service lines by 2031. Progress is reported to the state each year and posted publicly.
Mount Arlington's lead-line duty is split across more than one water system. Mount Arlington is served by more than one public community water system, at least one of which is the town's own. The c.183 duty is split, and which parcels fall to whom has to be resolved before anything is promised.
Why the unknowns are the expensive part
34 connections in Mount Arlington's inventory have no recorded material. It is a minority of the system, which makes it tractable, and it is still the part that has to be paid for before anything can be planned around it.
A service line recorded as unknown is not a confirmed lead line. It means nobody wrote the material down, often decades ago. The rule does not let that stand: an unknown is treated as lead until it is proven otherwise.
That leaves a system two ways to close the gap, and both cost money:
- Verify each one. Send a crew, excavate or pot-hole, record the material. Accurate, and the bill scales with the number of unknowns whether or not any lead turns up.
- Replace without verifying. Faster to close out, and it means paying to replace lines that were never lead.
Which is why the order you work in is the whole decision. Verifying the connections most likely to be lead first finds the real ones sooner and spends less on the ones that were never a problem.
Where Mount Arlington stands
Mount Arlington is served by 3 public community water systems: 2 operated by the town (Mount Arlington DPW Kadel Sys., Mount Arlington Boro DPW Main) and 1 regional supplier (Roxbury Twp WD - Shore Hills). The c.183 duty follows the system, not the municipal boundary, so Mount Arlington's own obligation is what its own systems reported in its 2024 filing.
Mount Arlington DPW Kadel Sys. (PWID NJ1426002) reported 0 known lead service lines, 0 galvanised lines requiring replacement, 10 connections whose material was never recorded, 97 confirmed not lead, as of its 2024 submission. The 10 unknowns are the expensive part: each one has to be identified before it can be ruled out, and until it is, it counts as lead for planning purposes.
Mount Arlington Boro DPW Main (PWID NJ1426005) reported 0 known lead service lines, 0 galvanised lines requiring replacement, 24 connections whose material was never recorded, 438 confirmed not lead, as of its 2024 submission. The 24 unknowns are the expensive part: each one has to be identified before it can be ruled out, and until it is, it counts as lead for planning purposes.
Roxbury Twp WD - Shore Hills (PWID NJ1436003) reported 0 known lead lines and 0 unknown-material connections in 2024 across its whole service area, which covers more than Mount Arlington. That figure is the system's, not the town's, and the share falling inside Mount Arlington has to be resolved parcel by parcel before anyone can put a number on it.
Mount Arlington DPW Kadel Sys.the town's own
- Lead service lines reported
- 0
- Galvanised requiring replacement
- 0
- Material UNKNOWN
- 10
- Confirmed not lead
- 97
Mount Arlington Boro DPW Mainthe town's own
- Lead service lines reported
- 0
- Galvanised requiring replacement
- 0
- Material UNKNOWN
- 24
- Confirmed not lead
- 438
Roxbury Twp WD - Shore Hills
- Lead service lines reported
- 0
- Galvanised requiring replacement
- 0
- Material UNKNOWN
- 0
- Confirmed not lead
- 1,700
What the state publishes, and what it does not
Published, free
NJDEP publishes how many connections each system reported as lead, galvanised, unknown and confirmed non-lead. Those are the numbers above. Systems over 3,300 people also have to put an address lookup on their own website.
Not published anywhere
Which of those unknowns to open first. The state publishes counts, not an order, and an address lookup answers one property at a time. Nobody publishes a ranked list, which is the thing a crew schedule is actually built from.
That gap is what we work in. We hold construction year for every parcel in New Jersey and the plumbing permit history behind it, so we can put a system's unknowns in order and show the evidence for each one. It is a ranking, not a diagnosis: it says where to look first, and it never claims a particular property has lead.
The arithmetic, with your numbers
34 unknown connections reported by the system serving this town脳your cost to verify one=what closing the gap blind costs
We do not fill in the right-hand side, because we do not know your unit cost, your crew or your contract, and a number we invented would be worth nothing to you.
What we change is the left: working in a ranked order finds the real lead earlier in the programme and reduces how much of that spend lands on connections that were never lead.
The same ranked list is also the resident notification the statute already requires, so it does two jobs for one piece of work.
Funding, and what gates it
We have not confirmed this town's hazard mitigation plan yet.
Federal hazard-mitigation funding requires a current FEMA-approved plan. We match plans automatically by county and jurisdiction name, and this one did not resolve. It does not mean the plan is missing.
That is a gap in our record, not a finding about Mount Arlington.
Lead replacement is financed through the Drinking Water State Revolving Fund, with principal forgiveness available. The borrower is the water system, which is the town itself only where the town runs its own water. Which of those Mount Arlington is decides who applies.
What we have not measured in Mount Arlington yet
- We have not baked Mount Arlington's impervious and runoff layers yet, so there is no number here. That is different from the number being zero.
- We have not baked Mount Arlington's storm-drainage layer yet, so there is no number here. That is different from the number being zero.
How we know
- FEMA National Flood Hazard Layer flood zones and base flood elevation
- NJDEP MS4 outfalls the mapped storm-drainage network
- OpenFEMA HMA subapplications what happened to grant applications like yours
- FEMA Hazard Mitigation Plan Statuses the grant gate
- NJDEP service line inventory what each water system reported to the state, by year
Built from published federal and state records. Informational only, and not engineering, legal or funding advice. Confirm anything that matters with your municipal engineer and your State Hazard Mitigation Officer.
The Mount Arlington read
A working session and a written read for Mount Arlington: your unknowns in a ranked order with the evidence per connection, what your system has already filed, the funding route that matches who owns the duty here, and the resident notice drafted from the same list. Paid engagement, scoped in the first call.
Prefer to read first? Download the one-page Mount Arlington summary.
More about Mount Arlington
- ADU rules in Mount Arlington Whether an accessory dwelling unit is allowed, how big, and what it costs
- Property scores in Mount Arlington How the town permits, measured against every other New Jersey town