Authority
WSSC Water
Bi-county water and sewer authority for Montgomery County and Prince George's County, Maryland. System Development Charge (SDC) schedule effective July 1, 2026.
Jurisdictions served
WSSC Water is the primary retail water and sewer utility for the jurisdictions below.
Fee types administered
- System Development Charge (SDC) - Water (one-time development-side connection charge for water service)
- System Development Charge (SDC) - Sewer (one-time development-side connection charge for sewer service)
The SDC is the one-time, development-side connection charge for new water and sewer service. Residential SDC is assessed on a per-dwelling-unit basis (with a per-fixture alternative); non-residential SDC is assessed per plumbing fixture.
Fee schedule
Source: WSSC Water System Development Charge schedules, effective July 1, 2026. All values verbatim from the canonical Residential SDC and Non-Residential SDC pages; see the Source block below for primary-source provenance and SHA-256 hashes. Quarterly water and sewer usage (Account Maintenance, consumption) charges are operating-bill components and are not development connection costs, so they are excluded here.
Residential SDC - per dwelling unit (combined water + sewer)
| Dwelling unit | SDC Water | SDC Sewer | Combined | Effective |
|---|---|---|---|---|
| Apartment (per unit) | $940.00 | $1,197.00 | $2,137.00 | 2026-07-01 |
| 1-2 Toilets / residential dwelling unit | $1,411.00 | $1,795.00 | $3,206.00 | 2026-07-01 |
| 3-4 Toilets / residential dwelling unit | $2,351.00 | $2,991.00 | $5,342.00 | 2026-07-01 |
| 5 Toilets / residential dwelling unit | $3,290.00 | $4,189.00 | $7,479.00 | 2026-07-01 |
| 6 or more Toilets / residential dwelling unit | Assessed on a per-fixture basis (Water Supply Fixture Unit + Drainage Fixture Unit) | 2026-07-01 | ||
Residential SDC also has a detailed per-fixture schedule (Water Supply Fixture Unit and Drainage Fixture Unit basis) used for six-or-more-toilet dwellings and mixed cases. Representative per-fixture combined amounts include a bathtub at $470, a flush-tank water closet at $426, a kitchen sink at $378, and a 1-inch-or-larger lawn sprinkler at $920.
Non-Residential SDC - per fixture (representative amounts)
| Fixture | Combined SDC | Effective |
|---|---|---|
| Bathtub | $1,162.00 | 2026-07-01 |
| Water Closet, flush valve (public) | $1,186.00 | 2026-07-01 |
| Urinal | $760.00 | 2026-07-01 |
| Commercial dishwasher | $668.00 | 2026-07-01 |
| Cooling tower, 1-1/4 inch or larger | $6,900.00 | 2026-07-01 |
| Water supply only, 2 inch | $50,600.00 | 2026-07-01 |
| Irrigation system with 2-inch supply | $50,600.00 | 2026-07-01 |
The non-residential schedule assesses the SDC per plumbing fixture across 100-plus fixture types, ranging from roughly $23 to $276,000 depending on fixture and supply size. The values above are representative examples; the full per-fixture schedule is published on the WSSC Water Non-Residential SDC page named in the Source block.
Source
WSSC Water - Residential System Development Charge (canonical residential SDC schedule, effective July 1, 2026) - wsscwater.com/work-us/permit-services/residential-system-development-charge - accessed 2026-09-17 · playwright
Source content hash (SHA-256): d8216db8ede848d9f84cdda6aeab8428c4c70b242b38a17d2cc56bfddd2361af
WSSC Water - Non-Residential System Development Charge (canonical per-fixture SDC schedule, effective July 1, 2026) - wsscwater.com/work-us/permit-services/non-residential-system-development-charge - accessed 2026-09-17 · playwright
Source content hash (SHA-256): 6250a282d91ad122a371a8b9ada15c201cb0a314fdd2cba17d9a7be3a27c9d01
The WSSC Water SDC pages are JavaScript-rendered (Drupal). A direct Stage 1 fetch returns an HTTP 200 page shell with the SDC fee tables and dollar amounts absent; the fee tables render client-side. Capture was via Stage 3 Playwright with a normal Chrome user-agent, which rendered the canonical residential and non-residential SDC schedules verbatim, both effective July 1, 2026.
Last verified
Verified Last reviewed 2026-09-17. The SDC schedule has an explicit effective date of July 1, 2026.
WSSC Water administers only the System Development Charge (the developer-side water and sewer connection charge) for Montgomery County and Prince George's County, Maryland. Zoning, plat, building permit, and impact fees for these counties are administered by the counties directly and are covered on the Montgomery County and Prince George's County pages. Fee schedules change over time; ZoneFee captured the SDC schedule from the sources named above on the last-verified date. For binding fee amounts on a specific project, contact WSSC Water directly via the official website above. This page is for research and due-diligence reference only - it is not legal or financial advice.