WaterVerge

Is Council, ID Tap Water Safe to Drink?

Graded A, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓

900 residents served 1 water system PWSID: ID3020002
Overall Score
93.8 / 100
Violations
1 active
Last Updated
May 2026
Source
Groundwater
#6 of 139 in Idaho Top 5% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
AGRADE
Water Quality Grade
93.8/100
waterverge.com
A 93.8/100

Council, ID — Water Quality Report

Council's drinking water received a grade of A (93.8 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 900 residents using groundwater.

Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.

The system has 32 violations on record, including 13 health-based violations. 1 remains unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Council's water

Council ranks #6 out of 139 cities in Idaho for water quality, placing it one of the best in the state.

Council relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.

As a small community water system, Council may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
93.8 out of 100 Grade A
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
41.8/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
10/10
A
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Council, ID water safe to drink?

Use Caution

Council's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (93.8/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 900 residents using groundwater (wells).

1
Active Violations
0.0 ppb
Lead (90th %ile)
3 events
Disaster History

Recent water quality updates for Council

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Council's water quality assessment. Grade: A (93.8/100).

Disaster
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES

Federal disaster declaration (FEMA DR-4443). Flood event — may have impacted local water infrastructure.

Violation
1 drinking water violation recorded

Contaminants: Revised Total Coliform Rule.

Violation
1 drinking water violation recorded

Contaminants: Coliform (TCR).

Violation
1 drinking water violation recorded

1 health-based. Contaminants: Coliform (TCR).

Disaster
HURRICANE KATRINA

Federal disaster declaration (FEMA DR-3244). Hurricane event — may have impacted local water infrastructure.

Key contaminant findings

Based on the most recent EPA sampling data for Council's water supply.

Lead Within Limits
Detected: 0.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Council's water system has 32 total violations on record, including 13 health-based violations. 1 remain unresolved.

MONMRMCL
Most recent violations:
Feb 2017 Revised Total Coliform Rule Resolved
Nov 2013 Coliform (TCR) Resolved
Jul 2007 Coliform (TCR) Resolved
Mar 2006 Coliform (TCR) Resolved
Oct 1999 Coliform (TCR) Resolved

Flood & environmental risk

Adams County has experienced 3 federally declared disasters since 1974. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.

SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA DR-4443
HURRICANE KATRINA
Hurricane FEMA DR-3244
SEVERE STORMS, SNOWMELT & FLOODING
Flood FEMA DR-415

Where does Council's water come from?

Council's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 900 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Council residents can do

Request your utility's CCR

Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.

Monitor alerts during storms

Council's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.

Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.0 ppb
EPA Action Level: 15 ppb · 0% of limit
Safe Level
Compliance Record

Violation summary

32
Total violations
13
Health-based
1
Active / unresolved
Feb 2017
Most recent violation
Compliance Record

Violations & advisories

32 Total
1 Active
13 Health-based
31 Resolved
Violations by category
Total Coliform Rule
27
Lead and Copper Rule
3
Revised Total Coliform Rule
1
Active
Compliance Violation
Monitoring 0
Feb 2017 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved Feb 2017
Nov 2013 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 2013
Jul 2007 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Jul 2007
Mar 2006 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Mar 2006
Oct 1999 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Oct 1999
Oct 1998 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Oct 1998
Oct 1997 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Oct 1997
Sep 1997 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Sep 1997
Aug 1997 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Aug 1997
Jun 1996 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Jun 1996
May 1996 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved May 1996
Mar 1996 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Mar 1996
Nov 1995 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 1995
Sep 1995 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Sep 1995
Jan 1995 Resolved
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 1995
Sep 1994 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 1994
Aug 1994 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Aug 1994
Jul 1994 Resolved
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 1995
Jun 1994 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Jun 1994
Showing 20 of 32 violations
Environmental Risk

Drought conditions

D2 — severe drought

Adams County is currently in D2 (severe drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.

6
Weeks at D2+ (current streak)
23.4%
Months in D2+ (last 30y)
6
Weeks at D2+ (last 5y)

Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.

Environmental Risk

Flood & disaster history

3
Declared disasters
Jun 2019
Most recent
Flood
Most common type

Adams County has experienced 3 federally declared disasters since 1974. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Jun 2019
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES
Flood FEMA #4443
Sep 2005
HURRICANE KATRINA
Hurricane FEMA #3244
Jan 1974
SEVERE STORMS, SNOWMELT & FLOODING
Flood FEMA #415

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 0.0 ppb from 2004 (0.0 ppb) to 2025 (0.0 ppb).
Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Local Government
Population Served
900
Water Systems
1
Water Source

Where Council's water comes from

Groundwater

Council's drinking water is drawn from underground aquifers through wells.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.

Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.

The system is operated by local government ownership and serves approximately 900 people through 1 water system.

Infrastructure

Water systems serving Council

System Name PWSID Population Source
COUNCIL CITY OF ID3020002 900 GW
Regional Comparison

How Council compares

Full Idaho rankings →

Council's score of 93.8/100 is above the average of 43/100 among major Idaho cities. It outscores 10 of 10 nearby cities.

Council (this city)
93.8
Boise
33.6
Meridian
42.9
Nampa
41.8
Caldwell
38.5
Idaho avg
43
City Profile

About Council, ID

Economic Profile
$42,222
Median Income
$156,923
Median Home Value
$790/mo
Median Rent
15.9%
Unemployment
Community
59.4
Median Age
240
People / sq mi
10.1%
College Educated
62.5%
Homeownership
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Frequently asked questions

Is Council, ID tap water safe to drink?

Council's water quality earned a grade of A (93.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #6 out of 139 cities tested in Idaho.

What contaminants are in Council's water?

Lead was measured at 0.0 ppb (90th percentile). 32 violations are on record.

How is Council's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Council?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Council's water come from?

Council's water is sourced from Groundwater. The city has 1 water system serving approximately 900 residents.

What health violations has Council's water system had?

Council has 13 health-based violations on record. The most recent violation was recorded in February 2017. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.

Is Council's groundwater at risk of contamination?

Council uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 32 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Council's water compare to other cities?

Council ranks #6 out of 139 cities in Idaho (better than 96% of state cities) and #729 out of 15744 cities nationally (95th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Council's small water system affect quality?

Council's system serves approximately 900 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 32 violations on record.