PlainEnviro

Des Peres Water Quality

Missouri

Health Violations

According to EPA SDWIS, Des Peres, Missouri is served by 307 community water systems covering about 181,081 people. The same extract lists 3276 health-based violation records, most recently coded 0400 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.

307
Water Systems
181,081
Population Served
3,276
Health-Based Violation Records
20
Distinct Contaminant Codes

Drinking water in Des Peres, Missouri is delivered through 307 EPA-regulated community water systems serving an estimated 181,081 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 3,276 violation records across the 307 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 20 distinct EPA contaminant codes: Stage 1 Disinfectants and Disinfection Byproducts Rule, Interim Enhanced Surface Water Treatment Rule, Groundwater Rule, Long Term 2 Enhanced Surface Water Treatment Rule, TTHM and 15 others.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Missouri drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
MAGNOLIA-EDEN ISLES 10,155 0 Clean
MAGNOLIA-GREENLEAVES 8,031 0 Clean
MAGNOLIA-RESOLVE WHISPERWOOD 6,867 0 Clean
LAKE ROYALE S/D 5,890 16 Health
MAGNOLIA - TOWN & COUNTRY SERVICE 5,715 0 Clean
GULF PARK 4,813 0 Clean
MAGNOLIA-THE MEADOWS 4,701 0 Clean
MAGNOLIA-LAKESHORE ESTATES 4,146 2 Health
TERRE DU LAC 3,200 162 Health
WOOLMARKET VILLAGE ESTATES 2,910 0 Clean
MAGNOLIA-GUSTE ISLAND 2,847 0 Clean
FOUNTAINVIEW SUBDIVISION 2,703 0 Clean
CANEBRAKE UTILITY ASSOC INC 2,619 0 Clean
CS LOS CERROS WATER COMPANY INC 2,613 0 Clean
MAGNOLIA - EAGLE 1,980 0 Clean
CS HARRISBURG UTILITY COMPANY 1,759 2 Health
HYDRO RESOURCES-TUSAYAN 1,710 0 Clean
FOXWOOD HILLS (SC3750025) 1,703 0 Clean
COPANO COVE SUBDIVISION 1,668 0 Clean
INDIAN HILLS UTILITIES OPERATING COMPANY 1,600 2 Health
MAGNOLIA-GREEN ACRES SUBDIVISION 1,575 9 Health
SUN RAY ESTATES 1,460 0 Clean
WELLSGATE 1,447 6 Health
OCEAN BEACH 1,407 0 Clean
MAGNOLIA-MONTEREY SUBDIVISION 1,356 0 Clean
MAGNOLIA-LE TRIOMPHE SUBDIVISION 1,278 0 Clean
ROBINWOOD FOREST UTILITY INC 1,275 0 Clean
CS Q MOUNTAIN WATER COMPANY 1,224 0 Clean
TRADEWINDS VILLAGE 1,218 0 Clean
MAGNOLIA-PENN MILL LAKES 1,152 0 Clean
VACATION VILLAGE 1,140 0 Clean
LITTLE LAKE WEIR SUBDIVISION 1,138 0 Clean
LAKE SHERWOOD SUBD 1,100 0 Clean
LAKE LIMESTONE COVES WATER SYSTEM 1,080 0 Clean
ARANSAS BAY UTILITIES 1,062 2 Health
OCALA HEIGHTS S/D 1,045 0 Clean
TYMBER CREEK UTILITIES 1,007 0 Clean
MAGNOLIA - KILLIAN 999 13 Health
LAKEWOOD ENVIRONMENTAL 982 0 Clean
SWEET PEA PWS 980 0 Clean
OCKLAWAHA WATER WORKS (2 WTPS) 965 0 Clean
TRI COUNTY POINT WATER SYSTEM 3 915 2 Health
PARKS UTILITIES 898 2 Health
QUAIL RUN MHP 897 5 Health
C WILLOW WATER 855 0 Clean
MAGNOLIA-JACKSON SQUARE 825 18 Health
MAGNOLIA-MONEY HILLS ESTATES 825 1 Health
MAGNOLIA-RIVER PARK 822 0 Clean
PORT PERRY SERVICE 800 3 Health
ABRAXAS UTILITIES 792 171 Health
MAGNOLIA-WESTERN UTILITIES 789 15 Health
BUENA VISTA LAKES 768 0 Clean
COPANO RIDGE SUBDIVISION 765 0 Clean
AQUARINA UTILITIES 750 4 Health
OAKLAND WATER WORKS 750 0 Clean
HOUSTON ESTATES UTILITY-PALMETTO POINTE 713 1 Health
DANIELDALE COMMUNITY WATER SERVICE 702 0 Clean
HILLCREST UTILITY OPERATING COMPANY INC 700 2 Health
SANDY ACRES 678 0 Clean
LAGUNA TRES SUBDIVISION 669 0 Clean
CS HIGH COUNTRY PINES WATER COMPANY 668 0 Clean
CS PEEPLES VALLEY WATER COMPANY 658 3 Health
MAGNOLIA-LAKE STREET 651 0 Clean
LAGUNA VISTA SUBDIVISION 651 0 Clean
CS OAK CREEK PUBLIC SERVICE LLC 650 0 Clean
GLEN MEADOWS 650 0 Clean
HILLS OF BRIAR OAKS 645 0 Clean
CS TIERRA MESA ESTATES WATER COMPANY 632 47 Health
MAGNOLIA-BRIER LAKE UTILITIES INC 630 0 Clean
OAK HILLS RANCH WATER 624 2 Health
WINDING WATERS 608 0 Clean
CS VERDE LEE WATER COMPANY 604 21 Health
NORTH UNIVERSITY ESTATES 600 6 Health
VILLE DALSACE WATER SUPPLY 597 0 Clean
HILLTOP AT LAKE WEIR 595 0 Clean
FORE OAKS ESTATES 580 0 Clean
LANDFAIR SUBDIVISION 580 0 Clean
MAGNOLIA-GRANDE PALMS 579 0 Clean
COUNTRY SQUIRE WATER & SEWER 579 0 Clean
PALMER CREEK UTILITY ASSC, INC 570 0 Clean
MAGNOLIA-WILDWOOD SOUTH 549 1 Health
MAGNOLIA-WINDY MEADOWS 549 1 Health
CS GADSDEN WATER COMPANY 540 0 Clean
COLETO WATER 540 8 Health
CEDAR GLEN CONDOMINIUMS 535 0 Clean
BAYWOOD FOREST S/D 533 4 Health
CS TONTO VILLAGE WATER COMPANY 512 2 Health
MAJESTIC LAKES 512 0 Clean
MAGNOLIA-DIXIE GARDEN 510 1 Health
FRANKLIN WATER SYSTEMS 1 510 0 Clean
WHITE CYPRESS LAKES 507 0 Clean
GRANDE CASA 501 0 Clean
CS CHRISTOPHER CREEK HAVEN 497 2 Health
QUIET VILLAGE II 492 0 Clean
PONDEROSA PINES (2 WPS) 485 0 Clean
MAGNOLIA-GARDEN HEIGHTS SUBDIVISION WS 483 8 Health
MAGNOLIA-OAKLAWN TRACE 480 0 Clean
MAGNOLIA-MARKRIDGE PARK SUBDIVISION 468 2 Health
MAGNOLIA-BEAU PARTERRE 462 3 Health
WOODLAND HARBOR 459 0 Clean
TRI COUNTY POINT WATER SYSTEM 4 456 0 Clean
KUHLE H20 450 2 Health
MAGNOLIA-SPRING CREEK SUBDIVISION 444 115 Health
SPANISH GRANT SUBDIVISION 444 0 Clean
RJR WATER 432 3 Health
SHADY OAKS WATER 432 0 Clean
MAGNOLIA-BLEU LAKE HILLS 420 1 Health
TEXAS LANDING UTILITIES 420 106 Health
CONFLUENCE RIVERS GASCONY VILLAGE 414 3 Health
CS EL PRADO WATER COMPANY 404 118 Health
DEERWOOD UTILITIES 404 0 Clean
CS WINCHESTER WATER COMPANY 402 4 Health
OAK HILL ESTATES 402 1 Health
PASS CHRISTIAN ISLES 399 0 Clean
MAGNOLIA-SHENANDOAH ESTATES 396 0 Clean
CS HOLIDAY WATER COMPANY 395 2 Health
MAGNOLIA-OSSUN HEIGHTS 393 0 Clean
ROCKY POINT COMMUNITY 384 0 Clean
ENID SHORES DEV WATER COMPANY 380 0 Clean
CENTER RIDGE WATER DISTRICT #2 377 1 Health
CS MORMON LAKE WATER COMPANY 353 0 Clean
CS LOMA LINDA WATER COMPANY 351 4 Health
CS FLAGSTAFF RANCH WATER COMPANY 350 2 Health
HICKORY HILL WATER 342 0 Clean
CS WHITE HILLS WATER COMPANY UNIT 1 338 26 Health
ENID LAKE ESTATES 338 0 Clean
RIDGE POINTE S/D (SC3250105) 336 1 Health
CS WHITE HILLS WATER COMPANY UNITS 3 4 6 333 3 Health
COUNCIL CREEK VILLAGE 333 114 Health
COPANO HEIGHTS WATER 330 0 Clean
HERITAGE OAKS SUBDIVISION 330 0 Clean
MAGNOLIA-LAKESIDE EAST 324 0 Clean
MAGNOLIA-PRUDEN CREEK 324 0 Clean
CSWR SOUTHWEST GARDEN WATER 324 66 Health
RED OAK COMMUNITY WATER SERVICE 321 0 Clean
WHISPERING SANDS S/D 318 0 Clean
MAGNOLIA-CARENCRO VILLAGE 315 0 Clean
MAGNOLIA-COACH HOUSE MANOR 315 0 Clean
THE WILLOWS UTILITY COMPANY 315 0 Clean
TWELVE OAKS WATER SYSTEM 314 1 Health
LAKEVIEW RANCHETTES 309 0 Clean
LIMESTONE UTILITY 308 0 Clean
MAGNOLIA-UTILITY SERVICE OF LAKE CHARLES 306 12 Health
MAGNOLIA WATER UTILITES - CHERRYWOOD 306 4 Health
MAGNOLIA-RIVER PINES PLANTATION 300 7 Health
SEBASTIAN LAKE UTILITY OPERATING COMPANY 298 11 Health
MAGNOLIA-BRIGAS ESTATES 294 6 Health
SOUTH SILVER CREEK I II & III 291 180 Health
THE WOODS 285 0 Clean
MAGNOLIA-BELLEVILLE SUBDIVISION 282 16 Health
MAGNOLIA-SOUTHFIELD SQUARE 279 3 Health
ROCKFORD PLACE-CHARWOOD (SC3250099) 277 0 Clean
DEER SPRINGS WATER COMPANY 276 0 Clean
OAKHURST SUBDIVISION 273 0 Clean
CENTER RIDGE WATER SYSTEM 273 1 Health
MAGNOLIA-RIGOLETS ESTATES 273 11 Health
SPRING BRANCH WATER 273 1 Health
FLORIDA HEIGHTS S/D 268 0 Clean
MAGNOLIA-AUTUMN HAVEN 267 0 Clean
CS GARDNER WATER COMPANY 266 5 Health
LONGFORD PLACE WATER SYSTEM 262 6 Health
VINEYARD RIDGE WATER SUPPLY 261 2 Health
DS WATER COMPANY 258 32 Health
QUAIL RUN SUBDIVISION 258 0 Clean
MAGNOLIA-I59 MHP 255 2 Health
MAGNOLIA-GRANDE STAKES 252 0 Clean
BIG WOOD SPRINGS WATER SYSTEM 252 0 Clean
CS MOHAWK UTILITY COMPANY 243 27 Health
MAGNOLIA-BEAU PRE 240 0 Clean
CHICKASAW HILLS SUBDIVISION 240 0 Clean
BLACK CREEK RETREAT 235 2 Health
MAGNOLIA-HOMELAND HEIGHT 234 5 Health
HYDE PARK S/D (SC2450001) 234 0 Clean
TEXAS LANDING UTILITIES DEERWOOD 234 0 Clean
NORTH VICTORIA UTILITIES 234 2 Health
BELLEVIEW OAKS ESTATES 220 0 Clean
LAKEVIEW WATER SYSTEM 216 0 Clean
TALL PINES UTILITY 213 0 Clean
CS WEST VILLAGE WATER COMPANY 210 3 Health
MAGNOLIA-CHARTRES PLACE SUBDIVISION 210 0 Clean
CRAZY HORSE RANCH WATER 210 31 Health
HIDE-A-WAY HILLS WATER COMPANY 209 0 Clean
CENTER RIDGE WATER DISTRICT #3 208 1 Health
MAGNOLIA-TREWHILL 207 0 Clean
O HAYNES SYSTEM (0850014) 205 0 Clean
4 R RANCH WATER 2 204 0 Clean
EMIL-MAR SUBDIVISION 203 0 Clean
FRANKLIN WATER SYSTEMS 3 201 322 Health
FLOYD CLARK SUBDIVISION 200 0 Clean
MAGNOLIA-RIGOLETS HARBOR 200 0 Clean
MAGNOLIA-PORT LOUIS TOWNHOMES 200 1 Health
CHAMBERS MEADOW ESTATE WATER 198 0 Clean
MAGNOLIA-COTTAGES OF ACADIANA 196 12 Health
MAGNOLIA-EVANGELINE OAKS 195 4 Health
THE WOODLANDS WATER SYSTEM 195 0 Clean
MAGNOLIA-LEXINGTON HEIGHTS 192 0 Clean
MAGNOLIA-FOX RUN 189 0 Clean
MAGNOLIA-PEG LEG COVE 189 23 Health
MAGNOLIA-VILLAGE QUEST SUBDIVISION 186 7 Health
TRI COUNTY POINT WATER SYSTEM 2 186 0 Clean
WOOD TRAIL WATER SUPPLY 186 1 Health
FREMONT WATER 183 0 Clean
GLADLO WATER & SEWER INC 182 0 Clean
EMERALD FOREST 180 0 Clean
OAK HAVEN QUADRUPLEXES 178 0 Clean
COUNTRY WALK 178 0 Clean
SUNLIGHT ACRES SUBDIVISION 175 0 Clean
MAGNOLIA-PILOT STREET 174 14 Health
THE MISSING WELL 173 3 Health
THE HIGHLANDS 172 11 Health
MAGNOLIA-PENN MILL PLACE 171 0 Clean
CS LAKE VERDE WATER COMPANY 169 56 Health
TEXAS LANDING UTILITIES GOODE CITY 168 0 Clean
MAGNOLIA-BROOKHOLLOW SUBDIVISION 165 0 Clean
MAGNOLIA-RIVERSCAPE @ CLIO SUB 165 6 Health
CS ANTELOPE WATER COMPANY 163 1 Health
MEADOWVIEW ESTATES 162 0 Clean
WATER WORKS 2 ISLAND LODGES 162 0 Clean
CIMMARON BAY SUBDIVISION 160 0 Clean
CHAPARRAL WATER SYSTEM GILLESPIE 159 3 Health
MAGNOLIA - MEADOWWOOD ESTATES 156 0 Clean
EL PINON ESTATES WATER SYSTEM 156 46 Health
ELM HILLS UTILITY OPERATING COMPANY INC 154 0 Clean
LA CALETA ESTATES 152 1 Health
EVERGREEN LAKE ESTATES 150 0 Clean
ROY L UTILITIES 150 2 Health
AMBERWOOD SUBDIVISION 150 1 Health
MAGNOLIA - BARRON RIDGE SUBDIVISION 147 0 Clean
MEADOWVIEW ESTATES II 144 0 Clean
CIRCLE R RANCHETTES 141 1 Health
ARROWHEAD WATER SYSTEM 141 1 Health
BEAR DEN ACRES 140 0 Clean
SETTLERS MEADOWS WATER SYSTEM 138 0 Clean
SAN PEDRO VILLAGE 138 2 Health
ROUSES 137 0 Clean
CS SUNIZONA WATER COMPANY 136 3 Health
SETTLERS CROSSING WATER SYSTEM 2 135 0 Clean
MURRAY HILL ESTATES (SC3250014) 134 2 Health
MAGNOLIA-PINNACLE PLACE SUBDIVISION 132 0 Clean
SETTLERS ESTATES SEC II 132 0 Clean
JOHNSON BAY SUBDIVISION 126 0 Clean
EUGENE PWS 125 0 Clean
ASHLEY HEIGHTS S/D 123 0 Clean
MAGNOLIA - COLWORTH PLACE 123 0 Clean
SETTLERS CROSSING WATER SYSTEM 123 0 Clean
CS RANCHEROS BONITOS WATER COMPANY 120 45 Health
MAGNOLIA - BIG OAKS 120 0 Clean
EAGLE WOODS SUBDIVISION 118 0 Clean
MAGNOLIA-COUNTRY PINES 117 0 Clean
HOWARD WATER COOP 117 188 Health
FLAG CREEK RANCH 117 5 Health
TREETOP ESTATES 114 0 Clean
MAGNOLIA - LINDA LANE 111 1 Health
MAGNOLIA-JONES ROLLING RIDGE 111 7 Health
SOUTH COUNCIL CREEK 2 111 128 Health
VISTA VERDE WATER SYSTEMS 111 92 Health
CEDAR GREEN 110 5 Health
AUBURN LAKE SUBDIVISION 110 0 Clean
HUBERT WATSON SUBDIVISION 108 30 Health
CASSIE WATER SYSTEM 106 347 Health
CS GREEN ACRES WATER COMPANY 105 17 Health
ELEVEN OAKS SUBDIVISION 105 0 Clean
CENTER RIDGE WATER DISTRICT #4 105 1 Health
CS CITRUS PARK WATER COMPANY 102 126 Health
MAGNOLIA-BEVERLY HEIGHTS 100 4 Health
CONFLUENCE RIVERS M & M MHP WTP 100 0 Clean
TIMBERLANE WATER SYSTEM 100 7 Health
MAGNOLIA-DIXIE GARDEN-KINGS HWY 96 2 Health
CASTLECOMB WATER SYSTEM 93 0 Clean
PARKVIEW WATER SUPPLY 88 2 Health
KNOLLWOOD 87 0 Clean
PRAIRIE HEIGHTS SUBD 85 0 Clean
CHELSEA ROSE SUBD 83 0 Clean
CS SANTA CRUZ WATER CO 82 12 Health
MAGNOLIA - SIMPSON ACRES 81 0 Clean
OAKCREST VILLAS/SUN RESORT 80 0 Clean
MAGNOLIA-HIGHLAND RIDGE 80 0 Clean
MAGNOLIA-WHIPPOORWILL GROVE 78 0 Clean
LAKESIDE ESTATES WATER SYSTEM 78 0 Clean
WATER WORKS 1 FLOYD ACRES 78 0 Clean
CHASEHUNT FARMS (SC3250104) 75 1 Health
CONFLUENCE RIVERS FAWN LAKE WATER SYSTEM 72 2 Health
HILLSIDE ESTATES WATER SYSTEM 72 0 Clean
DEER COUNTRY WSC 72 7 Health
SHEALY ESTATES III (SC3250102) 70 0 Clean
AERO VALLEY WATER SERVICE 68 0 Clean
LINCECUM WATER POWERS ADDITION 66 2 Health
SKY HARBOR RANCHETTES WATER SYSTEM 66 4 Health
OCALA GARDEN APARTMENTS 65 0 Clean
LIVE OAK HILLS SUBDIVISION 65 110 Health
LA PLAYA SUBDIVISION WATER SYSTEM 65 91 Health
LANDS POINT S/D (SC4050004) 64 3 Health
CLERMONT HARBOR 61 0 Clean
CONFLUENCE RIVERS STONE RIDGE MEADOWS 60 3 Health
MAGNOLIA-HABERSHAM SUBDIVISION 54 0 Clean
FARRAR WSC 52 0 Clean
HILTON SOUND (SC3250024) 50 3 Health
MAGNOLIA-PORT EAST 45 9 Health
THOUSAND OAKS SUBDIVISION 45 0 Clean
LAKESIDE FOREST 2 (SC3250030) 43 0 Clean
MAGNOLIA - EGRET LANDING 42 0 Clean
OLD CONCHO WATER USERS 40 0 Clean
CALVEY BROOK ESTATES 40 0 Clean
MAGNOLIA - DENNY DRIVE 36 0 Clean
CS CARTER WATER COMPANY 28 5 Health
WOODLANDS WEST 27 0 Clean
MAGNOLIA - SANDSTONE LAKE 25 2 Health

Does this city have health-based water violations?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system Contaminant Begin Date
CENTER RIDGE WATER DISTRICT #4 Stage 1 Disinfectants and Disinfection Byproducts Rule 2025-12-22
CENTER RIDGE WATER SYSTEM Stage 1 Disinfectants and Disinfection Byproducts Rule 2025-12-22
CENTER RIDGE WATER DISTRICT #2 Stage 1 Disinfectants and Disinfection Byproducts Rule 2025-12-22
CENTER RIDGE WATER DISTRICT #3 Stage 1 Disinfectants and Disinfection Byproducts Rule 2025-12-22
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-12-01
MAGNOLIA - LINDA LANE Groundwater Rule 2025-11-02
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-11-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-11-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-11-01
LA PLAYA SUBDIVISION WATER SYSTEM TTHM 2025-10-01
LA PLAYA SUBDIVISION WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-10-01
EL PINON ESTATES WATER SYSTEM TTHM 2025-10-01
EL PINON ESTATES WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-10-01
TIMBERLANE WATER SYSTEM TTHM 2025-10-01
CSWR SOUTHWEST GARDEN WATER Fluoride 2025-10-01
FRANKLIN WATER SYSTEMS 3 Nitrate 2025-10-01
FRANKLIN WATER SYSTEMS 3 Nitrate 2025-10-01
FRANKLIN WATER SYSTEMS 3 Nitrate 2025-10-01
FRANKLIN WATER SYSTEMS 3 Nitrate 2025-10-01
FRANKLIN WATER SYSTEMS 3 Chromium 2025-10-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-10-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-10-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-10-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-10-01
CS CARTER WATER COMPANY Combined Uranium 2025-10-01
CS CARTER WATER COMPANY Nitrate 2025-10-01
CS VERDE LEE WATER COMPANY Arsenic 2025-10-01
CS WINCHESTER WATER COMPANY Revised Total Coliform Rule 2025-09-14
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-09-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-09-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-09-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-09-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-09-01
CS MOHAWK UTILITY COMPANY Interim Enhanced Surface Water Treatment Rule 2025-09-01
CS HARRISBURG UTILITY COMPANY Groundwater Rule 2025-08-09
CS HARRISBURG UTILITY COMPANY Groundwater Rule 2025-08-09
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-08-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-08-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-08-01
CASSIE WATER SYSTEM Long Term 2 Enhanced Surface Water Treatment Rule 2025-08-01
LA PLAYA SUBDIVISION WATER SYSTEM TTHM 2025-07-01
LA PLAYA SUBDIVISION WATER SYSTEM TTHM 2025-07-01
LA PLAYA SUBDIVISION WATER SYSTEM TTHM 2025-07-01
LA PLAYA SUBDIVISION WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-07-01
LA PLAYA SUBDIVISION WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-07-01
LA PLAYA SUBDIVISION WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-07-01
EL PINON ESTATES WATER SYSTEM TTHM 2025-07-01
EL PINON ESTATES WATER SYSTEM TTHM 2025-07-01
EL PINON ESTATES WATER SYSTEM TTHM 2025-07-01
EL PINON ESTATES WATER SYSTEM Total Haloacetic Acids (HAA5) 2025-07-01

What are Des Peres's health-based records for?

Des Peres's health-based violation records carry 8 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant Records Systems
Gross Alpha, Excl. Radon and U 606 12
Combined Radium (-226 and -228) 494 10
Arsenic 343 10
Long Term 2 Enhanced Surface Water Treatment Rule 337 1
Nitrate 312 7
Fluoride 276 3
Tthm 252 13
Groundwater Rule 242 50

Frequently Asked Questions

What does EPA SDWIS list for drinking water in Des Peres, Missouri? ▼
Des Peres is listed with 307 EPA-regulated water systems covering approximately 181,081 people. 3276 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.
How many water violations does Des Peres have in this EPA extract? ▼
Des Peres water systems have 3276 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.
What contaminants were found in Des Peres water? ▼
Health-based records for Des Peres water systems carry the following EPA contaminant codes: Stage 1 Disinfectants and Disinfection Byproducts Rule, Interim Enhanced Surface Water Treatment Rule, Groundwater Rule, Long Term 2 Enhanced Surface Water Treatment Rule, TTHM and 15 others. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.
How many water systems serve Des Peres? ▼
307 EPA-regulated community water systems serve Des Peres, Missouri, collectively covering approximately 181,081 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Des Peres get its drinking water? ▼
Des Peres's water supply comes from 307 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.

How does Des Peres compare in Missouri?

Of the 676 Missouri places with at least one community water system on file, Des Peres ranks #1 by number of systems (307).

Either side of it: Kimberling City (36), Joplin (31)

About This Data

Figures here are the current EPA SDWIS extract joined to the 307 community water systems whose service area lists Des Peres, ranked against the 676 Missouri places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro