' i r * • SDMS DocID 2106209 (Hi •ecfj DRINKING WATER REGULATIONS AND HEALTH ADVISORIES By Office of Drinking Water U.S, Enivironmental Protection Agency Washington, D.C. (202)382-7571 SAFE DRINKING WATER HOTLINE 1-800-426-4791 (Toil-Free) '202-3 82-5533(Wasiiington, D.C.) Monday thru Friday, 8:30 AM to 4:30 PM EST April 1S90 "7 AR100421
13
Embed
DRINKING WATER REGULATIONS & HEALTH ADVISORIESDRINKING WATER REGULATIONS AND HEALTH ADVISORIES By Office of Drinking Water U.S, Enivironmental Protection Agency ... 0.5 • . . 1 700
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
' i
r
* •
SDMS DocID 2106209 (Hi •ecfj
DRINKING WATER REGULATIONS
AND HEALTH ADVISORIES
By
Office of Drinking Water U.S, Enivironmental Protection Agency
Washington, D.C. (202)382-7571
SAFE DRINKING WATER HOTLINE 1-800-426-4791 (Toil-Free)
'202-3 82-5533(Wasiiington, D.C.) Monday thru Friday, 8:30 AM to 4:30 PM EST
MCLG • - MaxTOum Contaminant Levei Gcai. A ncn-enfcrcsable ccncentration cf a drink watsr ccntaminant that is prctsc^a ci ad'/srs^ human health effects and aJlcws adequate margin cf safety. > . .
MCL - Maximum Contaminant Level. Maximum permissible Ieve< cf a contaminant in Wc which is delivered to any user cf a public water system,
RfO - Reference Dose. An estimate cf a daily exposure to the human population tha-likely to be without.appredable risk cf deleterious effects ever a lifetime.
DWHL - Drinking Watsr Equivalent Lsve<. A lifetim.e exposure ccncentraticn protective adverse, non-cancer health effects, tiiat assumes a^ cf the exposure tc contaminant is from a drinking water scurca.
(*) Tne- cc<ies for the .Status Reg and Status HA cdumns are 33 fcflcws:
£ - final Q - draft I, - listed for regulation P - proposed (Phase II draft prcpcsaJ) T - tentative (Phase V)
Other cedes found in tiie table indude ti:e fcltewing:
. N^ - net applicable PS - performance standard 0.5 HTO -1.0 NTU H - treatinent technique
««
*-*-*
I \
No mcrs than 5% of the samples may be positive. For systems collecting fev than-40 samples/mcrTth, no mere than 1 sample may be positive.
gukJanca
Large dlsaepancies between Lifetime and Longer-term HA values may ccc because of the Agency's conservative policies, especially with regard cardnogenicity, relative source corrtribution, and less tiian lifetime exposures chronic toxicity testing. These factors can result in a cumulative UF (uncertair factor) of 10 to 1000 when calculating a Lifetime HA.
B^u-oiNHuotartt iBrw tPMH U a t a a ^ O M M p t f i k M ^ A i { ^ Bcfisx^iOfiuorsrthsn* (PAi l) '.ufi^2-C3t)o«}top|picpy) eth&r li:.iaj>4ac£ fJ.'^XWi^MaHiOO ^ txT iM^ i ivnacotonkr to GfaiiQcMQctKwahana
Gratioi&ctiorQ(vxitti8fi8 ( n i b ^ Brano lomi ( IHU)
1 P 1 L 1 T 1 P 1 P 1 P 1 P 1 L 1 It 1 L 1 T 1 T 1 L 1 ^
' W^
---
50 .
1000 --
10 50
--
OAJ/I>
. -3
zoro
0>o/9 1 • 1
• --
10/5 -
7E+06 7E+0fl 5000 zero
-6
100 1300 200
1.4-2.4 <000 -
50 -2 --
10000 --
10 50
------
zero zero
-2 -
100 10000
1000 10000
50 ---
5000 1 -5
100 1300 200
4000 5
TT -2 -
100 10000
1000 10000
50 --- •
400000 400000
as . -
2/1 -
Sialiifl 1 HA* 1
1
1 P 1 P 1 P P .
F D D F F
F . ---
1 F P
1 F 1 F 1 F 1 1 1 P 1 P 1 P 1
1 P 1 D 1 P
lO^kn Clilkl
Ono-cliy Teivrlay /JQ/I
--
15 -•
5000 30000
2000 40-
1 1000
200 .
. ---
1000 . -
1
1 1 200 1 •
1 25000 1
1 7 1 1
WJ/1
. -
15 -.
5000 30000
2000 40
1000 -
200 .
. ---
1000 10000*
1000 . .
200 -
25000 «
7 . r
-
Uux)or-1 larm |
/<0/l 1
] -
15 . .
5000 4000
900 5
200 -
200 . -. - •
--
100
.
.
.
200 •
25000 .
7 _ -
LonQor-torm
7tl
rw) PO/* PO/kflWay
15 -.
5000 20000
1 3000 1 20 1 800 1 1 800
. -.
1 2 .
1 600 .
1 1
I ' ' •
1 200 1 1 OOOOO 1 •
1 20 1 .
1
. -0.4 1 _ -5
90 0.5 5 •
22 60
-.
• -0 3 -
20 _
- . • _
5
^ko Ackik
DweL P0/»
--
15 -. -
200 3000
20 200
-800
. •
. • -
10 -
600 . • « .
200 20000***
2500 .
90000 .
007 2 _ -
_ -
Lftatima
i'O/l
•
; -30000
3 • .
5000 ' -
600 5
100 -
200 -• '. -
2 .
100 . _ . _
100 .
17000 _
1 |iO/l jC^anoer
U 10^|G<oiip Canoerl
f ^ \
1; •
- j - •
- 1: P - 1 D 3 1 A - 1 -
' - 1 D 0.7 1 B2 - 1 0 - 1 D - 1 n
- 1 D - 1 P • 1 -- 1 B2 - f B2
- r -- 1 P - 1 0 - 1 P -in - 1 D - 1 -. 1 . - 1 D - 1
e . - 1 D 3?5» - 1 -
o.4r# - 1 -.
^ - j D - 1 -AR100430
Afra 1990 Pago 0
V
Chemicals .-*
MlCROBIOL(3QY AND TURBIOOY
Cryptosporidium Giardia lamblla - ; . " i LegtoneUa . '^* Standard p(ate count Total coWorm (current MCL
tvased on densitv) Total colifonn (after 12/31/00) Tujtoiditv (be{ora 1/1/91) ; Turbidity (after 12/31/90) Vintses
^nrwlartt i
S ta lm NIPDUUn
naa*
• .
L • F
1 F* 1 F*
1 F 1 F 1 F 1 F 1 F*
OnVO
----
V03
yes yea yes
-
I
UCLQ (MOfl)
-zoro zoro
NA
UCL
0*ol)
-TT TT TT
NA varlos zero
NA •«
-NA 1 & 5 N T I
lep? II
1
Status 1 HA*
"
--
^ F -
---
I/PS -
1 _.,-..._
Haakh ArK/tsorias l O k n a * ! 1
Ono<lay Tervday pOfl ^IQ^
-• -
• • -
-
1 ' -1 1 1
IjonQOt-taon ItQti
----
.
. ---
70 kn AfkiJt Lnnoor-
tann rvn PO/I ItQ^Qfiia^
--• -
1 1
1 1 1
----
.
. -
• • ; • .
-
p\wnL i»o/i
----
.
. ---
Ukiikna
^»Q^
•
-' • -
.
. ---
HQI\ \ H 10"* 1 Cancer Risk
-- 1 -
^ .
• - ,
--
Can Gmi
*
1 •
Key:
Varias:
. '1 and 5 NTU^
PS, TT, F. doflr^erl aa prcwioualy atated.
Final (or systems iKiinQ siulaco wator, also l>elrx) conaldorod (or rogulalkin under orourukvator disii^odion mlo.
MCL varies based on analytical nu)tlv>d usod, sample vok»mo. and ruj(nt)er ol samples colloclorl per nvinth. Also, t* typos ol MCLs » the monthly average and the "sk^o sampler UCL Both are basod on colilorm rlonsity.
Those are two MCLs lor tuilikllly. Tha montWy ov/eraQa MCL Is 1 NTU; the two-day crmsecutive averafle MCL Is SNTLI. •
RADIONUCUDES
Beta partkte and photon activity ((ormerV man-made radionuclides)