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WaterVerge

Water quality report · updated Jul 2026

Is Baldwin, KS Tap Water Safe to Drink?

Graded A-, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do ↓

0 contaminants over a legal limit
3.4 ppb lead, 90th percentile · low
2 unresolved violations
1K people served by 1 water system

PWSID KS2004508 · moderate data confidence · local government utility

Reviewed by WaterVerge Editorial Team · Last updated July 2026
A 88.2 / 100

#28 of 312Kansas cities
How we grade →

01The verdict: is Baldwin water safe?

Baldwin's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (88.2/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,163 residents using surface water (rivers, lakes, or reservoirs).

The concern

2 unresolved violations on record

EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.

See what was cited ↓
The good news

Lead is well under the limit

90th-percentile lead is 3.4 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.

See the trend ↓
Keep watching

A flood-prone service area

3 federal disaster declarations on record. After severe weather, watch for boil-water advisories.

See the risk factors ↓

Baldwin's drinking water received a grade of A- (88.2 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,163 residents using purchased surface water.

Lead levels were measured at 3.4 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 5 violations on record, including 3 health-based violations. 2 remain unresolved.

Baldwin ranks #28 out of 312 cities in Kansas for water quality, placing it one of the best in the state. The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection. As a small community water system, Baldwin may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

How the 88.2/100 breaks down Methodology →
ViolationsHistorical violation record including health-based and monitoring violations.
44.2 / 45A
Lead & CopperLead at 3.4 ppb (90th percentile).
18 / 20A
ContaminantsPFAS + legacy contaminant analysis.
17 / 20B
ComplianceMonitoring and reporting compliance with EPA regulations.
5 / 10D
Source RiskWater source: Purchased surface water.
4 / 5B

02What's in Baldwin's water

Every contaminant flagged in Baldwin, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.

1 detection · sorted by % of legal limit
Over the limit Elevated — watch Within limits
0 50% LEGAL LIMIT 150%
1 contaminant tested under EPA SDWIS, LCR and UCMR programs · 1 detected · not yet tested for PFAS under UCMR 5

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 3.4 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

03Baldwin's ten-year track record

Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 5 violations on record, including 3 health-based violations. 2 remain unresolved.

All ten of the last ten years were clean — no EPA violations recorded for Baldwin.

UpdateWater quality data updatedLatest EPA compliance and testing data incorporated into Baldwin's water quality assessment. Grade: A- (88.2/100).
Violation1 drinking water violation recordedContaminants: Lead and Copper Rule.Open
DisasterHURRICANE KATRINA EVACUATIONFederal disaster declaration (FEMA DR-3236). Hurricane event — may have impacted local water infrastructure.
DisasterSEVERE STORMS & FLOODINGFederal disaster declaration (FEMA DR-1000). Flood event — may have impacted local water infrastructure.
Violation1 drinking water violation recorded1 health-based. Contaminants: Coliform (TCR).Resolved
Violation2 drinking water violations recorded2 health-based. Contaminants: Coliform (TCR).Resolved
Lead, 90th percentileppb · lower is better
05101520EPA action level · 15 ppb2007 — 2.3 ppb2010 — 0 ppb2012 — 0 ppb2013 — 1.2 ppb2014 — 1.6 ppb2017 — 1.5 ppb2020 — 2.3 ppb2023 — 3.4 ppb2.33.420072012201420202023

Up 1.1 ppb since 2007. Latest reading: 3.4 ppb (2023) — 23% of the action level. Sampled at higher-risk homes (90th percentile).

04Where Baldwin's water comes from

Baldwin's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Source

Purchased Surface Water

Rivers, lakes, or reservoirs — more exposed to runoff, agriculture, and seasonal swings than groundwater.

Treatment

Wholesale supplier

Multi-barrier treatment: coagulation, sedimentation, filtration, and disinfection to meet EPA standards.

Distribution

1 system

1 water system, operated under local government ownership.

Delivery

1,163 people

Residents served across Baldwin's service area.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards. These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge. The system is operated by local government ownership and serves approximately 1,163 people through 1 water system.

System namePWSIDPopulationSource
DOUGLAS CO RWD 2 KS2004508 1,163 Purchased Surface Water

Water bodies near Baldwin

Kansas R · river Clinton Lk Nr Lawrence · lake Wakarusa R Nr Lawrence · river

As a surface-water system, these water bodies may directly influence Baldwin's drinking water supply.

05Pressure on Baldwin's watershed

Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.

Flood & storm history

Recurring — declared disasters

3 federal disaster declarations on record for Douglas County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.

HURRICANE KATRINA EVACUATION Sep 2005 · DR-3236
SEVERE STORMS & FLOODING Jul 1993 · DR-1000
SEVERE STORMS & FLOODING May 1973 · DR-378

06How Baldwin compares

Scores for nearby Kansas cities on one line, with the average marked.

Baldwin (this city)
88.2 · A-
Kansas City
86.1 · A-
Wichita
83.9 · B+
Olathe
79.5 · B
Lawrence
74.6 · B-
Topeka
39.3 · F

dashed line = Kansas average (62/100)

Baldwin scores 88.2/100above the Kansas average of 62/100. It outscores 10 of 10 nearby cities. Full Kansas rankings →

Douglas water quality rankings
Compare all cities in the county — grades, violations, and contaminant data side by side.

07What to do at home

Steps matched to what testing actually found in Baldwin's water — not generic advice.

Extra protection

A basic carbon filter still helps

Baldwin's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.

Compare tested filters →
Because lead was detected

Flush taps & check your service line

Lead leaches from pipes as water sits. Run cold water 30 seconds before drinking (especially mornings), and ask the utility whether your address still has a lead service line.

Lead risks explained →
Stay informed

Watch for Baldwin alerts

This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.

All water alerts →

Frequently asked questions

Is Baldwin, KS tap water safe to drink?

Baldwin's water quality earned a grade of A- (88.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #28 out of 312 cities tested in Kansas.

What contaminants are in Baldwin's water?

Lead was measured at 3.4 ppb (90th percentile). 5 violations are on record.

How is Baldwin'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 Baldwin?

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

Where does Baldwin's water come from?

Baldwin's water is sourced from Purchased surface water. The city has 1 water system serving approximately 1,163 residents.

What health violations has Baldwin's water system had?

Baldwin has 3 health-based violations on record. The most recent violation was recorded in October 2011. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.

How does Baldwin's water compare to other cities?

Baldwin ranks #28 out of 312 cities in Kansas (better than 91% of state cities) and #3581 out of 15382 cities nationally (77th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Baldwin's small water system affect quality?

Baldwin's system serves approximately 1,163 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 5 violations on record.

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About Baldwin, KS: Lawrence is a city in and the county seat of Douglas County, Kansas, United States, and the sixth-largest city in the state. It is in the northeastern sector of the state, astride Interstate 70, between the Kansas and Wakarusa rivers. As of the 2020 census, the population of the city was 94,934. The city is a college town with a significant student population, because it is home to both the University of Kansas (KU) and Haskell Indian Nations University (HINU). Median household income $59,834 · median home value $247,436 · median age 28.8 · 43.7% homeowners · 55.5% college educated. Wikipedia → Sources: EPA SDWIS & ECHO · UCMR 3–5 · Lead & Copper Rule samples · EPA TRI · U.S. Drought Monitor · FEMA declarations. Data last updated Jul 2026. Analysis by the WaterVerge Editorial Team · methodology.