CITY REPORT WA

Carson, WA: 10 Violations — 61/100 (2026)

1 ZIP code · 4 water systems · Updated 2026-06-03

Carson, WA: middle-tier water safety by the latest federal monitoring.

How Carson Compares

Carson61/100
Washington avg78/100
National avg67/100

Data: EPA SDWIS Last verified: 2026-06-03

1
ZIP Codes
4
Water Systems
1
ZIPs with Violations
C · 61
Avg Safety Score
Zone 1
Radon Risk (High)
$391K
Median Home Value
$1,200
Est. Remediation (0.3% of home value)

Key Facts for Carson Residents

  • Your city's water systems recorded 10 violations in the past 5 years.
  • Average lead level: 0.0015 mg/L.
  • Homes built before 1986: 60% — older plumbing may contain lead solder.
  • Estimated remediation: $1,200 per household.
  • CDC health risk index: 13.11 — above typical levels.

Carson's Water Providers

Water supply in Carson, WA follows a divided structure: 3 utilities account for the largest share of residential service out of 4 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.

Carson
Serves ~3,015 people · 10 violations
61
/100
Stevenson Water Department
Serves ~2,594 people · 10 violations
61
/100
Underwood
Serves ~1,000 people · 10 violations
61
/100

Overview

We track water quality and home safety data for 1 ZIP code in Carson, Washington (population ~3,004), covering 4 community water systems serving approximately 6,653 people region-wide.

1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.

Home Safety Score

Average Home Safety Score for Carson: C (61/100)

The score combines three factors:

Factor What It Measures
Water Quality EPA violations and compliance history
Lead Levels 90th percentile lead concentration vs EPA action level
Radon Risk EPA radon zone classification

Water Sources

Carson water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0015 mg/L (EPA action level: 0.015 mg/L)
  • 0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 1 (High Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Consumer Confidence Report Rule Reporting 14 1
E. coli Microbiological 4 1
Lead Inorganic 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
98610 C 10 0 Carson

All ZIP Codes in Carson

  • 98610 [C] — 10 violations

Data Sources

Updated daily.

Carson Community Health Snapshot

11.5%
Asthma (US: 9.8%)
11.2%
Diabetes (US: 10.4%)
16.1%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 11.5% ↑
Diabetes 11.2% ↑
Mental Health 16.1% ↑

Vertical line = national average. Above national · Below national

What's in Carson's Water?

Consumer Confidence Report Rule 14 violations
Reporting
E. coli 4 violations
Microbiological
Gastrointestinal illness, potentially fatal
Lead 2 violations
Inorganic · EPA limit: 0.015 mg/L

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Carson Infrastructure Age

1972
Median Build Year
60%
Built Before 1986
16%
Built Before 1970
Copper
Likely Pipe Material

With 60% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing — from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Carson, where the median build year is 1972, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.

1972
Median Year Built
60%
Pre-1986 (Lead Paint Risk)
16%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (16%) 1970–1986 (44%) Post-1986 (40%)

Over half of homes in Carson were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

How Remediation Costs Compare in Carson

In Carson, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.

Median Home Value
$390,700
Est. Remediation
$1,200
Remediation as % of home value 0.3%

Remediation costs in Carson are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 16% below the Washington average.

Carson: Lead Risk & Vulnerable Populations

60%
Homes Built Before 1986
0.0015
mg/L Avg Lead (Limit: 0.015)

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Locally, 60% of Carson homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

What You Can Do in Carson

  1. Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
  2. Install a certified water filter. Filters rated for Consumer Confidence Report Rule can reduce the most common contaminant found in Carson's water.
  3. Check your home's plumbing. With 60% of homes built before 1986, lead solder is a real possibility.

Frequently Asked Questions

Is the water safe to drink in Carson, WA?
Carson has an average water safety score of 61/100 (Grade C). 10 EPA violations have been recorded. Check individual ZIP code reports for details specific to your neighborhood.
How many water violations does Carson have?
Carson water systems have a total of 10 EPA violations. Violations are tracked across 1 ZIP code.
Does Carson water have lead?
The average 90th-percentile lead level in Carson is 0.0015 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home — testing is recommended especially in older properties.
How does Carson compare to Washington average?
Carson has an average water safety score of 61/100, which is below the Washington state average of 78/100.
How many water systems serve Carson?
Carson is served by 4 public water systems across 1 ZIP code, serving approximately 3,004 people.
How much does it cost to fix water issues in Carson?
Estimated remediation costs in Carson average $1,200 per household, ranging from $800 to $1,500. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
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