Halifax's public water comes entirely from four gravel-packed groundwater wells at two sites, operated by the Halifax Water Department (Superintendent Bill Lindsay), a division of the Town's Department of Public Works at 500 Plymouth Street. There is no reservoir or surface-water intake feeding the town's own distribution system. Public trackers put the population served at approximately 7,550 residents, though estimates range from about 7,545 to 7,575 depending on the source — essentially the entire town.
Two of the four wells are at the Richmond Park site (Well No. 1, drilled 1965, and Well No. 2, drilled 1972), off Plymouth Street near Pine Brook Drive; the other two are at the YMCA Camp well site. Water is treated with potassium permanganate for iron and manganese removal, sodium hydroxide for corrosion control, and chlorine for disinfection. The distribution system runs about 51 miles of water main, feeding a single storage facility — the half-million-gallon Plymouth Street Tank, an elevated steel tank built in 1960 that stands behind Town Hall.
During most of 2024, the Richmond Park treatment plant underwent major renovations and upgrades. While it was offline, Halifax purchased roughly 38 million gallons of treated water wholesale from the City of Brockton to keep the system supplied — a temporary, unusual role reversal, since it's normally Halifax's own Monponsett Pond that helps supply Brockton's system (see below), not the other way around.
Monponsett Pond (also called Monponsett Lake, split by Route 58 into West and East basins of 282 and 246 acres) sits almost entirely within Halifax, with only a sliver of the western basin reaching into Hanson. It is a genuinely distinctive fact about this town's water story, and worth stating plainly: Halifax's own drinking water supply has no connection to Monponsett Pond. The town's tap water comes exclusively from the Richmond Park and YMCA Camp groundwater wells described above.
What Monponsett Pond does do is help supply someone else's water system. Under a Massachusetts special act dating to 1964, the City of Brockton is permitted to divert water from East Monponsett Pond (and from Furnace Pond in neighboring Pembroke) into its Silver Lake reservoir, the principal source for Brockton's own public water system — which in turn wholesales treated water to other towns, including Whitman. Diversion is restricted to the non-summer months (October 1 through May 31) under a 2017 MassDEP administrative consent order with Brockton, at a reduced rate of roughly 12–14 million gallons per day. Monponsett's West basin, in particular, has been the subject of long-running MassDEP concern over elevated nutrient loading and recurring cyanobacteria blooms, tied in part to the reduced flow-through caused by the diversion itself.
In short: Halifax hosts a pond that helps keep the lights on for a neighboring city's water system, while its own residents drink from an entirely separate set of wells a few miles away. It's an ironic arrangement, but a real and well-documented one — not a connection this site is implying exists between Halifax's tap water and Monponsett's water-quality issues.
Halifax's wells draw from the same iron- and manganese-rich groundwater that has long supported the cranberry bog network across this part of Plymouth County — the state's own source-water assessment for the Halifax system notes that the wells' protection areas are dominated by forest, residential, and "woody perennial" (cranberry bog) land use. That geology is a feature for the bogs and a recurring headache for household plumbing: the Richmond Park wells require dedicated potassium permanganate treatment to strip iron and manganese before the water reaches the distribution system, and the Water Department's own website, as of mid-2026, still fields discolored-water complaints from certain parts of town, with a standing online form for residents to report incidents directly.
Iron and manganese are regulated by the EPA only as secondary (aesthetic) standards — 0.3 mg/L and 0.05 mg/L respectively — not as health-based contaminants at typical household levels. If your tap water is running discolored, a household-level test is the only way to know for certain what's in your specific water.
As with several other South Shore towns, independent public trackers do not agree at all on Halifax's violation history — and the disagreement here is unusually wide, so we think it's worth reporting honestly rather than picking whichever number sounds most dramatic.
| Source | What it reports |
|---|---|
| Aggregator tracker A (EWG-sourced) | Zero violations on record; overall water quality graded "A / Excellent," 100/100 |
| Aggregator tracker B | 98 total violation records since tracking began — 94 tied to Nitrate Rule, Radionuclides, and the Revised Radionuclides Rule, plus 3 more; 22 stored enforcement actions; zero open Lead and Copper Rule action-level exceedances |
| EPA SDWIS federal report | 71 total violations, described as predominantly monitoring and reporting failures (not confirmed health-based exceedances) for the Nitrate Rule and Volatile Organic Chemicals monitoring; most recently a "known violation" for the July–September 2025 compliance period |
One concrete, dated enforcement action does appear consistently: on December 5, 2025, MassDEP issued Halifax a State Administrative/Compliance Order without penalty for failure to monitor for nitrate, volatile organic chemicals, and PFAS at two specific sampling locations. This was a monitoring-schedule compliance matter, not a reported exceedance of a health-based limit.
We also noticed one federal tracker's system classifies Halifax's primary source as "surface water purchased" — which conflicts with every other source (including the Town's own Consumer Confidence Reports) describing an all-groundwater system. Our best explanation is that this reflects the 2024 wholesale purchase of Brockton's surface water during the Richmond Park renovation described above, possibly carried forward as a system classification rather than a one-time event. We flag it as an apparent tracker quirk rather than resolving it ourselves. For the authoritative record, check EPA's ECHO database directly (Halifax's PWS ID is MA4118000) or contact the Halifax Water Department at (781) 293-1733.
Unlike the tracker disagreements above, Halifax's most recent PFAS story comes from a single, authoritative primary source: the Water Department's own public notice, dated December 29, 2025, issued because routine monthly monitoring at Richmond Park Well 1 turned up elevated PFAS6 (the sum of six regulated compounds: PFOA, PFOS, PFNA, PFHxS, PFDA, and PFHpA) during the fourth quarter of 2025.
| Month | Sample date | PFAS6 result (ng/L) |
|---|---|---|
| October 2025 | 10/07/2025 | 20.1 |
| November 2025 | 11/18/2025 | 22.2 |
| December 2025 | 12/09/2025 | 16.3 |
Two of the three monthly results (October and November) individually exceeded the 20 nanogram-per-liter (ng/L, equivalent to parts per trillion) Massachusetts PFAS6 Maximum Contaminant Level. But MassDEP's rule is based on a quarterly compliance average, not any single month: averaging all three months together produced a compliance average of 20 ng/L — which, per the Water Department's own notice, "does not exceed the MCL." No violation occurred. The Water Department reported the other three sources (Richmond Park Well 2 and the two YMCA Camp wells) tested below the MCL for the same quarter, ranging from non-detect to 11.4 ng/L.
What we can't tell you: the public notice reports only the combined PFAS6 sum for Richmond Park Well 1, not a breakdown of which of the six individual compounds make up that total, or at what level. That matters because the federal rule regulates PFOA and PFOS individually at 4 ppt each — the two compounds most consistently linked to health effects in research. We have not seen a published compound-level breakdown for Halifax and won't guess at one. In response, the Water Department says it is using an Emerging Contaminant grant to investigate PFAS removal treatment options at Richmond Park and will continue monthly PFAS sampling at Well 1.
ppt = parts per trillion = ng/L. Source: Halifax Water Department, Drinking Water PFAS6 Public Education notice, distributed 12/29/2025.
How the rules around PFAS in drinking water have actually changed over the past several years — and where they stand right now.
MassDEP finalized an enforceable Maximum Contaminant Level (MCL) of 20 parts per trillion (ppt) for the sum of six PFAS compounds ("PFAS6") — PFOS, PFOA, PFHxS, PFNA, PFHpA, and PFDA. At the time, Massachusetts was among the first states in the country with a legally enforceable PFAS drinking water standard; there was still no federal one. This is the exact standard that Richmond Park Well 1's Q4 2025 quarterly average of 20 ppt landed precisely on — at, not over, the line.
The EPA's National Primary Drinking Water Regulation (NPDWR) set the first-ever enforceable federal limits for PFAS: 4 ppt each for PFOA and PFOS individually, 10 ppt each for PFHxS, PFNA, and HFPO-DA (GenX), plus a combined Hazard Index limit for mixtures of those and PFBS. Water systems were given until 2027 to complete initial monitoring and until 2029 to come into full compliance. Halifax has not published a compound-level breakdown showing whether PFOA or PFOS individually approach this federal limit.
Halifax's own routine monitoring produces the town's most concrete PFAS data point yet: a Q4 2025 quarterly compliance average of exactly 20 ppt at Richmond Park Well 1 — not a violation, but close enough that the Water Department was required to issue public education materials and has begun exploring removal treatment funded by an Emerging Contaminant grant.
EPA proposed two changes: keeping the PFOA and PFOS limits at 4 ppt each but letting water systems request a two-year compliance extension (to 2031 instead of 2029), and separately, rescinding the individual limits for PFHxS, PFNA, and HFPO-DA and the combined Hazard Index for PFAS mixtures, citing procedural requirements under the Safe Drinking Water Act. EPA held a public hearing on the proposals on July 7, 2026. As of today, the public comment period remains open and is scheduled to close July 20, 2026 — neither proposal has been finalized. EPA has indicated it intends to finalize the rules before the end of 2026. Check EPA's site directly for the current status before assuming either proposal is final.
Sources: Mass.gov — Massachusetts PFAS Drinking Water Standard (MCL); Federal Register — PFAS National Primary Drinking Water Regulation (April 2024); Halifax Water Department PFAS6 public notice (Dec. 2025); EPA — Proposed PFOA and PFOS Compliance Extension Rule; EPA — Proposed PFAS Rescission Rule.
We don't ask you to take our word for any of this. The underlying reports are public:
System-wide data only tells part of the story — service lines, home plumbing, and private wells can all change what actually comes out of your tap.
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