RWA Water & GNHWPCA Sewer Tap Fees in New Haven, CT (2026)

Two separate public authorities charge for a new water and sewer connection in New Haven. The South Central Connecticut Regional Water Authority (RWA) supplies water, and the Greater New Haven Water Pollution Control Authority (GNHWPCA) handles sewer — they are not the same agency, and neither one bills for the other’s service. For a standard single-family home with the typical 5/8-inch meter, RWA’s 2026 rate schedule totals $1,210 in new-connection charges (a local facilities charge, a service-connection/tap charge, and a meter installation charge), and GNHWPCA’s connection permit fee adds $3,850, for a combined $5,060 before the private service line, an unpublished “saddle” charge on the water side, and any main-frontage assessment. The biggest caveat: GNHWPCA’s connection fee schedule hasn’t been revised since July 2022 — more than four years — even though its separate sewer usage rates have since been updated twice, so it’s worth reconfirming with GNHWPCA before you budget a project. For how this compares nationally, see our guide to the cost to connect to city water.

New Haven tap and connection charges at a glance

The table below lists every RWA and GNHWPCA charge we could verify from each authority’s own 2026 fee schedules. RWA prices its new-connection charges by meter size, but its facilities charge and meter installation charge both group the 5/8-inch and 3/4-inch sizes into a single rate; its tap charge only has a table starting at 1 inch, because RWA’s own rules set a 1-inch minimum for any service pipe. GNHWPCA prices its connection permit fee entirely by the building’s water meter size, with a much bigger jump between 5/8-inch and 3/4-inch than anything on RWA’s side.

Worked example for a single-family home in New Haven

Assumptions: a single-family lot in New Haven that already fronts an RWA water main and a GNHWPCA sewer main (no main extension required), a standard 5/8-inch water meter, and a 1-inch water service tap, which is RWA’s minimum service-pipe size and the size its tap charge is billed at.

RWA water connection charges (2026 rate schedule, 5/8″ meter)

*RWA’s rate schedule footnotes the tap charge “plus cost of saddle based on the main size” without publishing that add-on amount; ask RWA for the saddle cost on your specific street before budgeting.

Add GNHWPCA’s sewer connection permit fee for the same 5/8-inch meter, $3,850, and the base total comes to $5,060 plus the unpublished saddle cost. Meter size matters far more on the sewer side: if the home needs a genuine 3/4-inch meter for added capacity, GNHWPCA’s fee jumps to $5,635 while RWA’s three charges stay at $1,210, pushing the combined total to $6,845. One exception: when RWA requires a 3/4-inch meter solely for meter reading, not capacity, GNHWPCA still charges the lower 5/8-inch rate.

What New Haven’s fees don’t cover

RWA’s and GNHWPCA’s charges cover the tap into the water main, the water meter, and the sewer connection permit. They don’t cover the private water service line from the curb to the house (which RWA’s rules say the customer must furnish and install), the sewer lateral, trenching, or the City of New Haven’s own building and plumbing permits — none of which RWA or GNHWPCA publish a fee schedule for. National estimates (methodology):

• Water service line: $30–$150 per foot, typical $50.
• Sewer service line (lateral): $50–$250 per foot, typical $100.
• Street cut or bore (opening a paved street to reach the main): $1,000–$10,000 per crossing, typical $4,000.
• Plumbing permit (City of New Haven, separate from RWA and GNHWPCA): $100–$1,300, typical $300.

How and when New Haven fees are paid

On the water side, RWA requires its facilities, service connection and meter installation charges to be paid before it approves a connection application. The customer furnishes and installs the service pipe (2 inches or smaller) at their own expense for the permit, excavation, backfill and pavement replacement; RWA taps the main, installs the corporation stop, sets the meter, and inspects the work — only RWA employees may tap an RWA main. Tap applications need at least five business days’ notice, with installation scheduled at least two days ahead, and the pipe must stay uncovered until RWA inspects it, before backfilling.

On the sewer side, GNHWPCA’s connection permit fee is paid by check when the permit is issued, before construction starts. GNHWPCA calculates the fee from a “Flow Proportion” based on the property’s water meter size, which is meant to reflect the owner’s estimated future use of the sewer system.

New Haven fee changes to watch

• GNHWPCA’s connection permit fee schedule is dated “Revised 7/2022” with no stated expiration, but it hasn’t been updated since — over four years — even though GNHWPCA has adopted new sewer usage-rate schedules for FY2025 and FY2026 in the meantime. It’s still the document GNHWPCA’s own site links as current (checked Sep 26, 2026), but confirm it hasn’t been superseded before relying on it for a large project.
• GNHWPCA also lists a separate “Administrative Permit Fee” ($280 at 5/8″/3/4″) alongside the Connection Permit Fee, with no published explanation of when it applies or whether it stacks with the Connection Permit Fee on a new hookup. Not included in this page’s totals; confirm with GNHWPCA.
• RWA’s rate schedule effective July 2, 2026 was a recent, board-approved increase. RWA revises its schedule periodically, so reconfirm the connection charges close to your project date.
• RWA’s tap/service-connection charge carries an unpublished “saddle cost based on the main size” — get that figure from RWA before budgeting a final number.

New Haven connection fee questions

Where to go next from New Haven

For another Connecticut utility that prices new connections by a per-foot property assessment rather than a flat meter-size fee, see Hartford’s MDC water and sewer connection charges. For a Northeast utility with a much lower flat published total, see Pittsburgh Water’s tap fees. For a Northeast city that prices connections per Equivalent Dwelling Unit instead of by meter size, see Jersey City’s JCMUA water and sewer connection fees.

tap fees by city · water tap fee · sewer tap fee · utility extension cost · water meter installation cost · utility connection cost calculator

Sources for New Haven figures

• Rate Schedule, Effective July 2, 2026, All Service Areas, South Central Connecticut Regional Water Authority (RWA). Checked Sep 26, 2026.
• Rules and Regulations for Water Service, January 2026 (revised May 18, 2026) (includes Rules, Regulations and Rates Governing the Extension of Water Mains), South Central Connecticut Regional Water Authority (RWA). Checked Sep 26, 2026.
• Rates & Regulations, South Central Connecticut Regional Water Authority (RWA). Checked Sep 26, 2026.
• Appendix A.1 — Fee Schedule of Connection Charges (revised 7/2022), Greater New Haven Water Pollution Control Authority (GNHWPCA). Checked Sep 26, 2026.
• Connection Fees, Greater New Haven Water Pollution Control Authority (GNHWPCA). Checked Sep 26, 2026.