Pierce County, WA · Septic Guide

Pierce County Septic Guide: Permits, Inspections & Rules

One agency runs septic permitting countywide, city and unincorporated alike. Here's how its permits, fees, inspection tiers, and point-of-sale rule actually work, sourced to the document behind every number.

Independent research, checked against TPCHD sources on July 22, 2026.

This page explains how septic permitting works in Pierce County. It's general information, not legal advice. Confirm current requirements with the county health department or a licensed professional before you budget a project or list a house.

Who Permits Septic in Pierce County

Tacoma-Pierce County Health Department (TPCHD) is the single local health jurisdiction covering every on-site sewage system (OSS) in Pierce County — city and unincorporated alike. No separate city process to track down.

TPCHD runs a homeowner-facing septic hub and a professional/ installer hub with forms. General questions: [email protected]. (tpchd.org — Septic Systems, Professionals: Septic, accessed July 22, 2026) The rules live in Environmental Health Code Chapter 2, On-Site Sewage, adopted July 18, 2018 and still current — the county's local implementation of statewide WAC 246-272A. See our Washington Septic Regulations guide for that relationship. (tpchd.org — Chapter 2, accessed July 22, 2026)

2026 Permit Fees

TPCHD publishes septic fees in a combined schedule with well and water resource fees: "On-Site Sewage, Individual Well and Water Resources 2026 Fees," revised December 2025, effective for 2026.

TPCHD 2026 on-site sewage fees (selected)
Item	Fee
Design, new single-family system	$1,020
Design, single-family repair	$960
Installation permit	$480
Installation permit, tank replacement only	$240
Installation permit, repair	$480
Septic/tank repair application	$360
Septic/tank replacement application	$720
Report of System Status (RSS), real estate transaction	$480 full / $240 reduced
RSS, 90-day conditional issuance	$600
RSS, request for exemption	$180
RSS, reinspection	$360
Tank pumping report entered in OnlineRME	$60
Re-inspection (general)	$360
Re-submittal	$240

2026 hourly rate basis: $240/hour ($14,184,650 ÷ 59,038 staff hours). Also covers well, water, and platting fees not shown here. (tpchd.org — 2026 Fees (PDF), accessed July 22, 2026) These are permit and paperwork fees, not contractor pricing — for statewide cost ranges, see Septic Installation Cost and Septic Pumping Cost.

O&M and Inspection Requirements

Pierce County doesn't use one flat inspection interval. Chapter 2 sorts every OSS into a risk tier, and the tier sets frequency.

Inspection frequency by risk tier
Risk tier	Typical systems	Required frequency
High risk	Community systems >2 connections, RV/mobile parks, multifamily >2 units, commercial >1,000 gal/day, schools, holding tanks, substandard repairs, sand filters, proprietary treatment, Areas of Special Concern	Annual evaluation
Moderate risk	2-connection community systems, duplexes, small commercial ≤1,000 gal/day, pressure distribution, in-home daycares, mounds, intermittent sand filters	Every 3 years
Low risk	Gravity and pump-to-gravity systems — most common residential setup	No fixed interval; only before a sale, after install, or if required

Proprietary components follow the manufacturer's DOH schedule instead, if more frequent. Evaluations must be done by a TPCHD-certified O&M firm, specialist, or technician, report due within 30 days; tank pumping alone carries the same clock. (Chapter 2 §§38–39, 42–43; tpchd.org — Chapter 2, accessed July 22, 2026) To confirm your tier, pull your permit record — see Find Your Septic Records below. Pierce's risk tiers set when TPCHD requires an evaluation report filed with the county. The statewide WAC 246-272A-0270 owner-maintenance floor still applies to the system itself: every 3 years for a system that's solely a tank and gravity drainfield, annually for one with a pump. See Septic Inspection Requirements in Washington for the statewide floor.

Selling a Home in Pierce County

Already in effect, not a future rule. Chapter 2 §34 requires a Report of System Status (RSS) from TPCHD before a septic-served property can close on a sale. Properties with an OSS installed less than six months earlier are exempt. Elsewhere in Washington without a local rule, the equivalent requirement doesn't start until February 1, 2027 — see our Selling a House With a Septic System in Washington guide.

Getting an RSS means a current operational evaluation and pumping of every tank. It's good for one year, can't be renewed, and a sale dragging past that window means reapplying and paying again. An unresolved defect can still get a conditional RSS: the sale proceeds, buyer completes repairs within 90 days of title transfer, for a $600 fee (see the fee table above). Transferring title without a required RSS is a code violation. Apply through TPCHD's RSS page, the Accela portal, or by PDF; questions go to [email protected]. (tpchd.org — RSS, application (PDF), Accela, accessed July 22, 2026)

Find Your Septic Records

TPCHD runs two lookup tools. For an as-built drawing or original design, use the record-drawing search: parcel number, site address, or owner name, filtered to category "On-Site Water UST." Address format matters — for "2401 South 35th Street," enter "2401 35th." No file found means filing a public records request. (edocs.tpchd.org, accessed July 22, 2026) For permit and inspection status, including the final inspection call-in date, use the current Accela portal: address, parcel number, or SR-Number. TPCHD also runs an older interface at eco.tpchd.org, which searches differently. Start with Accela. (aca-prod.accela.com/tpchd, accessed July 22, 2026)

Pierce County Quirks

Key Peninsula and the central aquifer

TPCHD's only "Area of Special Concern" is the entire Key Peninsula, designated by Board of Health Resolution 2007-4001 under RCW 70.118A, covering shellfish districts at Rocky Bay, Burley Lagoon, and Filucy Bay — systems here sit in the higher risk tiers above. Separately, the EPA has designated much of central Pierce County a Sole Source Aquifer, overlapping the county's Aquifer Recharge and Wellhead Protection Areas; siting and design get extra scrutiny where the two overlap. (Chapter 2 §12; Management Plan pp. 26–29; tpchd.org — Management Plan (PDF), accessed July 22, 2026)

Practices worth double-checking

These come from a 2022 TPCHD bulletin with no 2025/2026 restatement online. Likely still true; confirm before relying on them: a shoreline-parcel repair also needs a Shoreline Substantial Development Permit Exemption submission; an installed system stays uncovered three business days after the install is called in, and early backfill risks code enforcement; and one free resubmittal was allowed per application, though the 2026 fee schedule now lists a $240 Re-Submittal fee. Undersized rural lots face a separate constraint: the bulletin cites Griffin v. Thurston County as precluding a variance to develop an existing undersized lot — case law, not policy.

TappsWise (Lake Tapps watershed)

TPCHD's TappsWise partnership with Cascade Water Alliance offers up to $950 in discounts on inspection, pumping, and minor repairs, plus algae/bacteria water-quality monitoring. (tpchd.org — Lake Tapps, accessed July 22, 2026)

Getting Work Done, and Sources

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Primary sources

TPCHD — Septic Systems
TPCHD — Professionals: Septic
TPCHD — Chapter 2, On-Site Sewage
TPCHD — 2026 Fees (PDF)
TPCHD — RSS page
TPCHD — RSS Application (PDF)
TPCHD — Accela portal
TPCHD — Record drawing search
TPCHD — Management Plan (PDF)
TPCHD — TappsWise, Lake Tapps

All sources accessed July 22, 2026. General information, not legal advice; fees and rules change over time. Confirm current requirements with TPCHD or a licensed professional.

Related guides

Questions about Pierce County septic? Ask the Septic Guide, our AI assistant.

Washington Septic Regulations How DOH authority, WAC 246-272A, and county rules like Pierce's fit together.
Selling a House With a Septic System in Washington The statewide inspection-at-sale rule starting February 1, 2027.
Septic Installation Cost in Washington Statewide installed-cost ranges and how repair vs. replacement gets permitted.
Septic Pumping Cost in Washington What routine pumping runs statewide, and how often it's needed.
King County Septic Permits and Point-of-Sale Rule Permit fees, O&M inspection tiers, and the county's own point-of-sale rule.
Kitsap County Septic Permits and Marine Recovery Area Rules Permit costs, inspection frequency, and Marine Recovery Area rules.