Pierce County, Washington
85 ZIP codes · Avg score 89/100 · Grade A · Updated 2026-06-03
Water systems in Pierce County serve 85 ZIP codes with few reported safety events.
How Pierce County Compares
How Pierce County Compares
Pierce County scores 11 points above the Washington state average (78/100) and 21 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Pierce County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.9 (asthma 10.8%, diabetes 10.6%)
Estimated additional annual cost per homeowner: $3,766, driven primarily by sea_level
Infrastructure: 0.326% avg pipe failure probability, 11% of ZIPs at high risk
52.4% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Pierce County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 15 violations. Past 5 years: 19 total (19 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $3,766
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
358,970 housing units in Pierce County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Pierce County
Remediation costs are relatively manageable for most homeowners in Pierce County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Pierce County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Pierce County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Tacoma Water Division | 448,771 | 117 |
| 2 | Southwood | 64,155 | 95 |
| 3 | Summit Water & Supply Company | 16,109 | 88 |
| 4 | Parkland Light & Water Company | 29,595 | 79 |
| 5 | Peacock Hill | 7,401 | 76 |
57 total water systems serve Pierce County.
All ZIP Codes in Pierce County
85 ZIP codes tracked in Pierce County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 98303 | Anderson Island | 99 | A | 0 | $478K |
| 2 | 98323 | Carbonado | 99 | A | 1 | $436K |
| 3 | 98327 | Dupont | 99 | A | 1 | $550K |
| 4 | 98330 | Elbe | 99 | A | 0 | — |
| 5 | 98352 | Sumner | 99 | A | 1 | — |
| 6 | 98439 | Lakewood | 99 | A | 0 | — |
| 7 | 98492 | Lakewood | 99 | A | 0 | — |
| 8 | 98496 | Lakewood | 99 | A | 0 | — |
| 9 | 98497 | Lakewood | 99 | A | 0 | — |
| 10 | 98401 | Tacoma | 97 | A | 2 | — |
| 11 | 98411 | Tacoma | 97 | A | 2 | — |
| 12 | 98412 | Tacoma | 97 | A | 2 | — |
| 13 | 98413 | Tacoma | 97 | A | 2 | — |
| 14 | 98415 | Tacoma | 97 | A | 2 | — |
| 15 | 98416 | Tacoma | 97 | A | 2 | — |
| 16 | 98417 | Tacoma | 97 | A | 2 | — |
| 17 | 98419 | Tacoma | 97 | A | 2 | — |
| 18 | 98431 | Tacoma | 97 | A | 2 | — |
| 19 | 98433 | Tacoma | 97 | A | 2 | — |
| 20 | 98442 | Tacoma | 97 | A | 2 | — |
| 21 | 98447 | Tacoma | 97 | A | 2 | — |
| 22 | 98448 | Tacoma | 97 | A | 2 | — |
| 23 | 98455 | Tacoma | 97 | A | 2 | — |
| 24 | 98460 | Tacoma | 97 | A | 2 | — |
| 25 | 98464 | Tacoma | 97 | A | 2 | — |
| 26 | 98471 | Tacoma | 97 | A | 2 | — |
| 27 | 98481 | Tacoma | 97 | A | 2 | — |
| 28 | 98490 | Tacoma | 97 | A | 2 | — |
| 29 | 98493 | Tacoma | 97 | A | 2 | — |
| 30 | 98329 | Gig Harbor | 95 | A | 0 | $476K |
| 31 | 98333 | Fox Island | 95 | A | 0 | $953K |
| 32 | 98338 | Graham | 95 | A | 1 | $472K |
| 33 | 98388 | Steilacoom | 95 | A | 0 | $595K |
| 34 | 98498 | Lakewood | 95 | A | 0 | $458K |
| 35 | 98558 | Mckenna | 95 | A | 0 | — |
| 36 | 98580 | Roy | 95 | A | 0 | $485K |
| 37 | 98387 | Spanaway | 94 | A | 3 | $424K |
| 38 | 98402 | Tacoma | 93 | A | 2 | $558K |
| 39 | 98403 | Tacoma | 93 | A | 2 | $737K |
| 40 | 98405 | Tacoma | 93 | A | 2 | $444K |
| 41 | 98406 | Tacoma | 93 | A | 2 | $594K |
| 42 | 98407 | Tacoma | 93 | A | 2 | $613K |
| 43 | 98408 | Tacoma | 93 | A | 2 | $379K |
| 44 | 98409 | Tacoma | 93 | A | 2 | $363K |
| 45 | 98418 | Tacoma | 93 | A | 2 | $385K |
| 46 | 98421 | Tacoma | 93 | A | 2 | — |
| 47 | 98465 | Tacoma | 93 | A | 2 | $545K |
| 48 | 98373 | Puyallup | 92 | A | 6 | $518K |
| 49 | 98375 | Puyallup | 92 | A | 6 | $472K |
| 50 | 98396 | Wilkeson | 92 | A | 4 | $489K |
| 51 | 98328 | Eatonville | 90 | A | 1 | $539K |
| 52 | 98332 | Gig Harbor | 90 | A | 0 | $687K |
| 53 | 98335 | Gig Harbor | 90 | A | 0 | $736K |
| 54 | 98385 | South Prairie | 90 | A | 0 | $490K |
| 55 | 98499 | Lakewood | 90 | A | 0 | $370K |
| 56 | 98354 | Milton | 89 | A | 0 | $511K |
| 57 | 98321 | Buckley | 88 | A | 4 | $524K |
| 58 | 98395 | Wauna | 88 | A | 0 | — |
| 59 | 98404 | Tacoma | 88 | A | 2 | $387K |
| 60 | 98422 | Tacoma | 88 | A | 2 | $614K |
| 61 | 98424 | Tacoma | 88 | A | 2 | $497K |
| 62 | 98444 | Tacoma | 88 | A | 2 | $370K |
| 63 | 98445 | Tacoma | 88 | A | 2 | $413K |
| 64 | 98446 | Tacoma | 88 | A | 2 | $460K |
| 65 | 98466 | Tacoma | 88 | A | 2 | $564K |
| 66 | 98467 | University Place | 88 | A | 0 | $580K |
| 67 | 98372 | Puyallup | 87 | A | 6 | $570K |
| 68 | 98374 | Puyallup | 87 | A | 6 | $491K |
| 69 | 98360 | Orting | 83 | B | 2 | $466K |
| 70 | 98443 | Tacoma | 83 | B | 2 | $478K |
| 71 | 98371 | Puyallup | 82 | B | 6 | $516K |
| 72 | 98390 | Sumner | 80 | B | 1 | $472K |
| 73 | 98349 | Lakebay | 73 | B | 0 | $363K |
| 74 | 98351 | Longbranch | 73 | B | 0 | $694K |
| 75 | 98359 | Olalla | 73 | B | 0 | $584K |
| 76 | 98394 | Vaughn | 73 | B | 0 | $472K |
| 77 | 98062 | Seahurst | 66 | C | 0 | — |
| 78 | 98322 | Burley | 66 | C | 0 | — |
| 79 | 98344 | Kapowsin | 66 | C | 0 | — |
| 80 | 98348 | La Grande | 66 | C | 0 | — |
| 81 | 98355 | Mineral | 66 | C | 0 | $413K |
| 82 | 98397 | Longmire | 66 | C | 0 | — |
| 83 | 98398 | Paradise Inn | 66 | C | 0 | — |
| 84 | 98430 | Camp Murray | 66 | C | 0 | — |
| 85 | 98391 | Bonney Lake | 65 | C | 0 | $578K |
Recommended Buyer Guides for Pierce County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 52.4% of homes built before 1978
Deep Dive Reports
Detailed analysis for Pierce County, Washington
Overview
Pierce County in Washington covers 85 ZIP codes with an average Home Safety Score of A (89/100).
53 of 85 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Washington water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.