01The verdict: is Lake Waccamaw water safe?
Lake Waccamaw's drinking water has significant quality concerns based on EPA testing data. With a grade of B (79.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,572 residents using groundwater (wells).
13 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 ↓Lead is well under the limit
90th-percentile lead is 4.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓3 violations in the last five years
Recent compliance history is the best predictor of future problems — the year-by-year record is below.
See the record ↓Lake Waccamaw's drinking water received a grade of B (79.1 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,572 residents using groundwater.
Lead levels were measured at 4.0 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 24 violations on record, including 4 health-based violations. 13 remain unresolved.
Lake Waccamaw ranks #161 out of 400 cities in North Carolina for water quality, placing it mid-range in the state. Lake Waccamaw 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, Lake Waccamaw may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Lake Waccamaw's water
Every contaminant flagged in Lake Waccamaw, 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.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 4.0 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in North Carolina
Cities ranked by compounds detected Cu Copper in North Carolina
Cities ranked by 90th-percentile copper
03Lake Waccamaw'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 24 violations on record, including 4 health-based violations. 13 remain unresolved.
7 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.
▲ Up 4 ppb since 2016. Latest reading: 4 ppb (2025) — 27% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Lake Waccamaw's water comes from
Lake Waccamaw's drinking water is drawn from underground aquifers through wells.
Groundwater
Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.
Local treatment
Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.
1 system
1 water system, operated under local government ownership.
2,572 people
Residents served across Lake Waccamaw's service area.
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 2,572 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| LAKE WACCAMAW, TOWN OF | NC0424045 | 2,572 | Groundwater |
05Pressure on Lake Waccamaw'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
10 federal disaster declarations on record for Columbus County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
Drought
Columbus County is in D4 (exceptional drought) per the U.S. Drought Monitor (week of Jul 2026). Drought can raise disinfection-byproduct levels and taste/odor issues as utilities draw from lower reservoirs.
06How Lake Waccamaw compares
Scores for nearby North Carolina cities on one line, with the average marked.
dashed line = North Carolina average (43/100)
Lake Waccamaw scores 79.1/100 — above the North Carolina average of 43/100. It outscores 9 of 10 nearby cities. Full North Carolina rankings →
36.5 / 100FRaleigh, NC
30.7 / 100AClemmons, NC
86 / 100FDurham, NC
36.6 / 100FGreensboro, NC
33.5 / 100FCary, NC
34.6 / 100
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 Lake Waccamaw's water — not generic advice.
A basic carbon filter still helps
Lake Waccamaw'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 →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 →Watch for Lake Waccamaw 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 Lake Waccamaw, NC tap water safe to drink?
Lake Waccamaw's water quality earned a grade of B (79.1/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #161 out of 400 cities tested in North Carolina.
What contaminants are in Lake Waccamaw's water?
Lead was measured at 4.0 ppb (90th percentile). 24 violations are on record.
How is Lake Waccamaw'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 Lake Waccamaw?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lake Waccamaw's water come from?
Lake Waccamaw's water is sourced from Groundwater. The city has 1 water system serving approximately 2,572 residents.
What health violations has Lake Waccamaw's water system had?
Lake Waccamaw has 4 health-based violations on record. The most recent violation was recorded in October 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 13 violations remain unresolved.
Is Lake Waccamaw's groundwater at risk of contamination?
Lake Waccamaw 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 24 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 Lake Waccamaw's water compare to other cities?
Lake Waccamaw ranks #161 out of 400 cities in North Carolina (better than 60% of state cities) and #8280 out of 15382 cities nationally (46th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Lake Waccamaw's small water system affect quality?
Lake Waccamaw's system serves approximately 2,572 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 24 violations on record.